· SUMMARY This report describes the logistics, data acquisition, processing and presentation of results of a DIGHEM airborne geophysical survey carried out for Trade Winds Ventures

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FUGRO AIRBORNE SURVEYS

DIGHEM SURVEY FOR

TRADE WINDS VENTURES INC. BIRCH LAKE,

ONTARIO

NTS: 52 N/8

f-GAD FUGRO AIRBORNE SURVEYS

Report #05006

2.30199

FU£jrO Airborne Surveys Corp. Mississauga, Ontario

June 7, 2005

DIGHEM SURVEY FOR

TRADE WINDS VENTURES INC. BIRCH LAKE,

ONTARIO

NTS: 52 N/8

Fugro Airborne Surveys, 2270 Argentia Road, Unit 2, Mississauga, Ontario , Canada , L5N 6A6 Phone: 19058120212, Fax : 1 9058121504

Douglas Garrie Geophysicist

SUMMARY

This report describes the logistics, data acquisition, processing and presentation of results

of a DIGHEM airborne geophysical survey carried out for Trade Winds Ventures Inc., over

a property located near Birch Lake, Ontario. Total coverage of the survey block amounted

to 592.5 km. The survey was flown from April 6th to April ih. 2005.

The purpose of the survey was to detect zones of conductive mineralization and to provide

information that could be used to map the geology and structure of the survey area. This

was accomplished by using a DIGHEM multi-coil, multi-frequency electromagnetic system.

supplemented by a high sensitivity cesium magnetometer. The information from these

sensors was processed to produce maps that display the magnetic and conductive

properties of the survey area. A GPS electronic navigation system ensured accurate

positioning of the geophysical data with respect to the base maps.

The survey data were processed and compiled in the Fugro Airborne Surveys Toronto

office. Map products and digital data were provided in accordance with the scales and

formats specified in the Survey Agreement.

The survey property contains several anomalous features, some of which are considered

to be of moderate to high priority as exploration targets. Areas of interest may be

assigned priorities on the basis of supporting geophysical, geochemical and/or geological

information. After initial investigations have been carried out, it may be necessary to re-

evaluate the remaining anomalies based on information acquired from the follow-up

program.

CONTENTS

1. INTRODUCTION .......................................................................................................... 1.1

2. SURVEY OPERATIONS .............................................................................................. 2.1

3. SURVEY EQUIPMENT ................................................................................................ 3.1 Electromagnetic System ............................................................................................... 3.1 In-Flight EM System Calibration ................................................................................... 3.2 Airborne Magnetometer ................................................................................................ 3.3 Magnetic Base Station .................................................................................................. 3.4 Navigation (Global Positioning System) ........................................................................ 3.5 Radar Altimeter ............................................................................................................ 3.7 Barometric Pressure and Temperature Sensors .......................................................... 3.7 Analog Recorder .......................................................................................................... 3.8 Digital Data Acquisition System .................................................................................... 3.8 Video Flight Path Recording System .......................................................................... 3.1 0

4. QUALITY CONTROL AND IN-FIELD PROCESSING .................................................. .4.1

5. DATA PROCESSING ................................................................................................... 5.1 Flight Path Recovery .................................................................................................... 5.1 ElectromagnetiC Data ................................................................................................... 5.1 Apparent Resistivity ...................................................................................................... 5.2 Total MagnetiC Field ..................................................................................................... 5.4 Calculated Vertical Magnetic Gradient. ......................................................................... 5.5 Digital Elevation ............................................................................................................ 5.5 Contour, Colour and Shadow Map Displays ................................................................. 5.6 Multi-channel Stacked Profiles ..................................................................................... 5.7

6. PRODUCTS ....................................................................................... ,', .................. , .... 6.9 Base Maps ................................................................................................................... 6.9 Final Products ............................................................................................................ 6.10

7. SURVEY RESULTS ..................................................................................................... 7.1 General Discussion ...................................................................................................... 7.1 Magnetics ..................................................................................................................... 7.3 Apparent Resistivity ...................................................................................................... 7.5 Electromagnetic Anomalies .......................................................................................... 7.6

8. CONCLUSIONS AND RECOMMENDATIONS ............................................................. 8.1

APPENDICES

A. List of Personnel B. Background Information C. Data Archive Description D. EM Anomaly List E. Data Processing Flowcharts

- 1.1 -

1. INTRODUCTION

A DIGHEM electromagnetic/resistivity/magnetic survey was flown for Trade Winds

Ventures Inc., from April 6th to April 7th, 2005, over a survey block located near Birch Lake,

Ontario. The survey area can be located on NTS map sheet 52 NIB (Figure 2).

Survey coverage consisted of approximately 592.5 line-km, including 2B.0 line-km of tie

lines. Flight lines were flown in an azimuthal direction of 45°/225° with a line separation of

50 metres. Tie lines were flown orthogonal to the traverse lines with a line separation of

1000 metres.

The survey employed the DIGHEM electromagnetic system. Ancillary equipment consisted

of a magnetometer, radar altimeter, video camera, analog and digital recorders, and an

electronic navigation system. The instrumentation was installed in an AS350B3 turbine

helicopter (Registration C-GECL) that was provided by Questral Helicopters Ltd. The

helicopter flew at an average airspeed of 105 kmlh with an EM sensor height of

approximately 30 metres.

Due to the presence of cultural features in the survey area, any interpreted conductors that

occur in close proximity to cultural sources, should be confirmed as bedrock conductors

prior to drilling.

- 1.2 -

Figure 1: Fugro Airborne Surveys RESOLVE EM bird with AS350-83

- 2.1 -

2. SURVEY OPERATIONS

The base of operations for the survey was established at Birch Lake Lodge.

The survey area can be located on NTS map sheets 52N/8 (Figure 2).

Table 2-1 lists the corner coordinates of the survey area in NAD83, UTM Zone 15,

central meridian gr w.

Table 2-1

Nad83 Utm Zone 15 Block Corners X-UTM (E) Y-UTM (N)

05006-1 1 547469 5698709 Birch Lake 2 548883 5700123

3 548983 5700023 4 550483 5700023 5 553000 5698808 6 552128 5697936 7 555397 5696737

8 556544 5696492

9 557483 5696488 10 558183 5696123

11 559033 5695273 12 557619 5693859 13 556747 5694731 14 553983 5695323 15 547983 5697523 16 547983 5698195

- 2.2-

LOCATION MAP

A 1-----e=~+r_:'J_JJ.--_t_-4."__:;I--__:;oo:::o~'------N__t 51'3Q'N

NTS: 52N/8 UTM ZONE: 15 NA083

Figure 2

Our/tin

~2?

SCALE: 1 :250,000

Location Map and Sheet Layout Birch Lake Survey Area

Job # 05006

- 2.3-

The survey specifications were as follows :

Parameter Specifications

Traverse line direction 45°/225° Traverse line spacing 50 m Tie line direction 135°/315° Tie line spacing 1000 m Sample interval 10 Hz, 3.3 m @ 120 km/h Aircraft mean terrain clearance 58 m EM sensor mean terrain clearance 30 m Mag sensor mean terrain clearance 30 m Average speed 105 km/h Navigation (guidance) ±5 m, Real-time GPS Post-survey flight path ±2 m, Differential GPS

- 3.1 -

3. SURVEY EQUIPMENT

This section provides a brief description of the geophysical instruments used to acquire

the survey data and the calibration procedures employed. The geophysical equipment

was installed in an AS350B3 helicopter. This aircraft provides a safe and efficient platform

for surveys of this type.

Electromagnetic System

Model: DIGHEM

Type: Towed bird, symmetric dipole configuration operated at a nominal survey altitude of 30 metres. Coil separation is 8 metres for 900 Hz, 1000 Hz, 5500 Hz and 7200 Hz, and 6.3 metres for the 56,000 Hz coil­pair.

Coil orientations, frequencies and dipole moments

Channels recorded:

Sensitivity:

Sample rate:

Atm2 orientation nominal

211 coaxial / 1000 Hz 211 coplanar I 900 Hz

67 coaxial / 5500 Hz 56 coplanar / 7200 Hz 15 coplanar / 56,000 Hz

5 in-phase channels 5 quadrature channels 2 monitor channels

0.06 ppm at 1000 Hz Cx 0.12 ppm at 900 Hz Cp 0.12 ppm at 5,500 Hz Cx 0.24 ppm at 7,200 Hz Cp 0.60 ppm at 56,000 Hz Cp

1118 Hz 875 Hz

5795 Hz 7269 Hz 56110Hz

10 per second, equivalent to 1 sample every 3.3 m, at a survey speed of 120 km/h.

- 3.2-

The electromagnetic system utilizes a multi-coil coaxial/coplanar technique to energize

conductors in different directions. The coaxial coils are vertical with their axes in the

flight direction. The coplanar coils are horizontal. The secondary fields are sensed

simultaneously by means of receiver coils that are maximum coupled to their respective

transmitter coils. The system yields an in-phase and a quadrature channel from each

transmitter-receiver coil-pair.

In-Flight EM System Calibration

Calibration of the system during the survey uses the Fugro AutoCal automatic, internal

calibration process. At the beginning and end of each flight, and at intervals during the

flight, the system is flown up to high altitude to remove it from any "ground effect"

(response from the earth). Any remaining signal from the receiver coils (base level) is

measured as the zero level, and is removed from the data collected until the time of the

next calibration. Following the zero level setting, internal calibration coils, for which the

response phase and amplitude have been determined at the factory, are automatically

triggered - one for each frequency. The on-time of the coils is sufficient to determine an

accurate response through any ambient noise. The receiver response to each

calibration coil "event" is compared to the expected response (from the factory

calibration) for both phase angle and amplitude, and any phase and gain corrections are

automatically applied to bring the data to the correct value.

- 3.3-

In addition, the outputs of the transmitter coils are continuously monitored during the

survey, and the gains are adjusted to correct for any change in transmitter output.

Because the internal calibration coils are calibrated at the factory (on a resistive

halfspace) ground calibrations using external calibration coils on-site are not necessary

for system calibration. A check calibration may be carried out on-site to ensure all

systems are working correctly. All system calibrations will be carried out in the air, at

sufficient altitude that there will be no measurable response from the ground.

The internal calibration coils are rigidly positioned and mounted in the system relative to

the transmitter and receiver coils. In addition, when the internal calibration coils are

calibrated at the factory, a rigid jig is employed to ensure accurate response from the

external coils.

Using real time Fast Fourier Transforms and the calibration procedures outlined above,

the data are processed in real time, from measured total field at a high sampling rate, to

in-phase and quadrature values at 10 samples per second.

Airborne Magnetometer

Model:

Type:

Sensitivity:

Sample rate:

Fugro AM1 02 processor with a Scintrex CS3 sensor

Optically pumped cesium vapour

0.01 nT

10 per second

- 3.4-

The magnetometer sensor is housed in the EM bird, 28 m below the helicopter.

Magnetic Base Station

Primary

Model: Fugro CF1 base station with timing provided by integrated GPS

Sensor type: Geometrics G822

Counter specifications: Accuracy: ±0.1 nT 0.01 nT 1 Hz

GPS specifications:

Environmental Monitor specifications:

Resolution: Sample rate

Model: Type:

Sensitivity: Accuracy:

Temperature: • Accuracy: • Resolution:

Marconi Allstar Code and carrier tracking of L 1 band, 12-channel, CIA code at 1575.42 MHz -90 dBm, 1.0 second update Manufacturer's stated accuracy for differential corrected GPS is 2 metres

±1.5°C max 0.0305°C

• Sample rate: 1 Hz • Range: -40°C to + 75°C

Barometric pressure: • Model: Motorola MPXA4115A • Accuracy: ±3.0o kPa max (-200C to 1 05°C temp. ranges) • Resolution: 0.013 kPa • Sample rate: 1 Hz • Range: 55 kPa to 108 kPa

- 3.5-

Backup

Model: GEM Systems GSM-19T

Type: Digital recording proton precession

Sensitivity: 0.10 nT

Sample rate: 3 second intervals

A digital recorder is operated in conjunction with the base station magnetometer to record

the diurnal variations of the earth's magnetic field. The clock of the base station is

synchronized with that of the airborne system, using GPS time, to permit subsequent

removal of diurnal drift. The Fugro CF1 was the primary magnetic base station. It was

located at 51° 26' 29.85164' N, 92° 17' 18.58651" W. The second back-up unit was set up

approximately 20 feet north of the CF1 base station.

Navigation (Global Positioning System)

Airborne Receiver for Real-time Navigation & Guidance and Flight Path Recovery

Model:

Type:

Sensitivity:

Accuracy:

Antenna:

Ashtech Glonass GG24 with PNAV 2100 interface

SPS (L 1 band), 24-channel, CIA code at 1575.42 MHz,

S code at 0.5625 MHz, Real-time differential.

-132 dBm, 0.5 second update

Manufacturer's stated accuracy is better than 5 metres real-time

Mounted on tail of aircraft

GPS Base Station

Model:

Type:

Sensitivity:

Accuracy:

- 3.6-

Marconi Allstar OEM, CMT-1200

Code and carrier tracking of L 1 band, 12-channel, CIA code at 1575.42 MHz

-90 dBm, 1.0 second update

Manufacturer's stated accuracy for differential corrected GPS is 2 metres.

The Ashtech GG24 is a line of sight, satellite navigation system that utilizes time-coded

signals from at least four of forty-eight available satellites. Both Russian GLONASS and

American NAVSTAR satellite constellations are used to calculate the position and to

provide real time guidance to the helicopter. The Marconi Allstar GPS unit, part of the CF-

1, was used as the primary GPS base station. The mobile and base station raw XYZ data

were recorded, thereby permitting post-survey differential corrections for theoretical

accuracies of better than 5 metres.

Each base station receiver is able to calculate its own latitude and longitude. For this

survey, the GPS station was located at latitude 51° 26' 29.85164' N , longitude, 92° 17'

18.58651" W at an elevation of 382.5 metres above the ellipsoid. The GPS records data

relative to the WGS84 ellipsoid, which is the basis of the revised North American Datum

(NAD83). Conversion software is used to transform the WGS84 coordinates to the

NAD83 UTM system displayed on the maps.

- 3.7-

Radar Altimeter

Manufacturer: Honeywell/Sperry

Model: RT330

Type: Short pulse modulation, 4.3 GHz

Sensitivity: 0.3 m

Sample rate: 2 per second

The radar altimeter measures the vertical distance between the helicopter and the ground.

This information is used in the processing algorithm that determines conductor depth.

Barometric Pressure and Temperature Sensors

Model:

Type:

Sensitivity:

Sample rate:

DIGHEM D 1300

Motorola MPX4115AP analog pressure sensor AD592AN high-impedance remote temperature sensors

Pressure: 150 mV/kPa Temperature: 100 mvrc or 10 mvrc (selectable)

10 per second

The D1300 circuit is used in conjunction with one barometric sensor and up to three

temperature sensors. Two sensors (baro and temp) are installed in the EM console in the

aircraft, to monitor pressure (1 KPA) and internal operating temperatures (2TDC).

- 3.8-

Analog Recorder

Manufacturer:

Type:

Resolution:

Speed:

RMS Instruments

DGR33 dot-matrix graphics recorder

4x4 dots/mm

1.5 mmlsec

The analog profiles are recorded on chart paper in the aircraft during the survey. Table

3-1 lists the geophysical data channels and the vertical scale of each profile.

Digital Data Acquisition System

Manufacturer:

Model:

Recorder:

RMS Instruments

DGR33

San Disk compact flash card (PCMCIA)

The stored data are downloaded to the field workstation PC at the survey base, for

verification, backup and preparation of in-field products.

- 3.9-

Table 3-1. The Analog Profiles

Channel Scale Name Parameter units/mm 1X91 coaxial in-phase ( 1000 Hz) 2.5 ppm 1X9Q coaxial quad ( 1000 Hz) 2.5 ppm 3P91 coplanar in-phase ( 900 Hz) 2.5 ppm 3P9Q coplanar quad ( 900 Hz) 2.5 ppm 2P71 coplanar in-phase ( 7200 Hz) 5 ppm 2P7Q coplanar quad ( 7200 Hz) 5 ppm

i 4X71 coaxial in-phase ( 5500 Hz) 5 ppm 4X7Q coaxial quad ( 5500 Hz) 5 ppm 5P51 I coplanar in-phase ( 56000 Hz) 10 ppm 5P5Q coplanar quad ( 56000 Hz) 10 ppm

I ALTR altimeter (radar) 3m MGRC Right sensor magnetics, coarse 20 nT

•

MGRF Right sensor magnetics, fine 2.0 nT MGLC Left sensor magnetics, coarse 20 nT MGLF Left sensor magnetics, fine 2.0 nT CXSP . coaxial spherics monitor CPSP coplanar spherics monitor

i CXPL coaxial powerline monitor CPPL coplanar powerline monitor

i 1KPA altimeter (barometric) 30 m 2TDC internal (console) temperature 1° C 3TDC external temperature 1° C

- 3.10 -

Video Flight Path Recording System

Type:

Recorder:

Format:

Panasonic WVCL322 Colour Video Camera

Panasonic AG-720

NTSC (VHS)

Fiducial numbers are recorded continuously and are displayed on the margin of each

image. This procedure ensures accurate correlation of data with respect to visible

features on the ground.

- 4.1 -

4. QUALITY CONTROL AND IN-FIELD PROCESSING

Digital data for each flight were transferred to the field workstation, in order to verify data

quality and completeness. A database was created and updated using Geosoft Oasis

Montaj and proprietary Fugro Atlas software. This allowed the field personnel to

calculate, display and verify both the positional (flight path) and geophysical data on a

screen or printer. Records were examined as a preliminary assessment of the data

acquired for each flight.

In-field processing of Fugro survey data consists of differential corrections to the

airborne GPS data, verification of EM calibrations, drift correction of the raw airborne

EM data, spike rejection and filtering of all geophysical and ancillary data, verification of

flight videos, calculation of preliminary resistivity data, diurnal correction, and preliminary

leveling of magnetic data.

All data, including base station records, were checked on a daily basis, to ensure

compliance with the survey contract specifications. Reflights were required if any of the

following specifications were not met.

Flight Path No lines to exceed ±50% departure from nominal line spacing over

a continuous distance of more than 1 km, except for reasons of

safety.

- 4.2-

Clearance Mean terrain sensor clearance of 30 m, ±10 m, except where

precluded by safety considerations, e.g., restricted or populated

areas, severe topography, obstructions, tree canopy, aerodynamic

limitations, etc.

Airborne Mag - The non-normalized 4th difference will not exceed 1.6 nT over a

continuous distance of 1 km excluding areas where this

specification is exceeded due to natural anomalies.

Base Mag Diurnal variations not to exceed 10 nT over a straight line time

chord of 1 minute.

EM Spheric pulses may occur having strong peaks but narrow widths.

The EM data area considered acceptable when their occurrence is

less than 10 spheric events exceeding the stated noise specification

for a given frequency per 100 samples continuously over a distance

of 2,000 metres.

II

Coil Peak to Peak Noise Envelope

Frequency Orientation (ppm)

1000 Hz horizontal coplanar 5.0

900 Hz horizontal coplanar 10.0

5500 Hz vertical coaxial 10.0

7200 Hz horizontal coplanar 20.0

II

56,000 Hz horizontal coplanar 40.0

- 5.1 -

5. DATA PROCESSING

Flight Path Recovery

The raw range data from at least four satellites are simultaneously recorded by both the

base and mobile GPS units. The geographic positions of both units, relative to the

model ellipsoid, are calculated from this information. Differential corrections, which are

obtained from the base station, are applied to the mobile unit data to provide a post­

flight track of the aircraft, accurate to within 2 m. Speed checks of the flight path are

also carried out to determine if there are any spikes or gaps in the data.

The corrected WGS84 latitude/longitude coordinates are transformed to the coordinate

system used on the final maps. Images or plots are then created to provide a visual

check of the flight path.

Electromagnetic Data

EM data are processed at the recorded sample rate of 10 samples/second. Spheric

rejection median and Hanning filters are then applied to reduce noise to acceptable levels.

EM test profiles are then created to allow the interpreter to select the most appropriate EM

anomaly picking controls for a given survey area. The EM picking parameters depend on

several factors but are primarily based on the dynamic range of the resistivities within the

- 5.2-

survey area, and the types and expected geophysical responses of the targets being

sought.

Anomalous electromagnetic responses are selected and analysed by computer to provide

a preliminary electromagnetic anomaly map. The automatic selection algorithm is

intentionally oversensitive to assure that no meaningful responses are missed. Using the

preliminary map in conjunction with the multi-parameter stacked profiles, the interpreter

then classifies the anomalies according to their source and eliminates those that are not

substantiated by the data. The final interpreted EM anomaly map includes bedrock,

surficial and cultural conductors. A map containing only bedrock conductors can be

generated, if desired.

Apparent Resistivity

The apparent resistivities in ohm-m are generated from the in-phase and quadrature EM

components for all of the coplanar frequencies, using a pseudo-layer half-space model.

The inputs to the resistivity algorithm are the in-phase and quadrature amplitudes of the

secondary field. The algorithm calculates the apparent resistivity in ohm-m, and the

apparent height of the bird above the conductive source. Any difference between the

apparent height and the true height, as measured by the radar altimeter, is called the

pseudo-layer and reflects the difference between the real geology and a homogeneous

halfspace. This difference is often attributed to the presence of a highly resistive upper

layer. Any errors in the altimeter reading, caused by heavy tree cover, are included in the

pseudo-layer and do not affect the resistivity calculation. The apparent depth estimates,

- 5.3-

however, will reflect the altimeter errors. Apparent resistivities calculated in this manner

may differ from those calculated using other models.

In areas where the effects of magnetic permeability or dielectric permittivity have

suppressed the in-phase responses, the calculated resistivities will be erroneously high.

Various algorithms and inversion techniques can be used to partially correct for the effects

of permeability and permittivity.

Apparent resistivity maps portray all of the information for a given frequency over the

entire survey area. This full coverage contrasts with the electromagnetic anomaly map,

which provides information only over interpreted conductors. The large dynamic range

afforded by the multiple frequencies makes the apparent resistivity parameter an excellent

mapping tool.

The preliminary apparent resistivity maps and images are carefully inspected to identify

any lines or line segments that might require base level adjustments. Subtle changes

between in-flight calibrations of the system can result in line-to-line differences that are

more recognizable in resistive (low signal amplitude) areas. If required, manual level

adjustments are carried out to eliminate or minimize resistivity differences that can be

attributed, in part, to changes in operating temperatures. These leveling adjustments are

usually very subtle, and do not result in the degradation of discrete anomalies.

- 5.4-

After the manual leveling process is complete, revised resistivity grids are created. The

resulting grids can be subjected to a microleveling technique in order to smooth the data

for contouring.

The calculated resistivities for all coplanar "frequencies are included in the XYZ and grid

archives. Values are in ohm-metres on all final products.

Total Magnetic Field

The aeromagnetic data were inspected in grid and profile format. Spikes were removed

manually with the aid of a fourth difference calculation. Lag corrections were applied to

the magnetic data. The lag correction was not consistent for the entire survey. A

Geometrics G822 cesium vapour magnetometer was operated at the survey base to

record diurnal variations of the earth's magnetic field. The clock of the base station was

synchronized with that of the airborne system to permit subsequent removal of diurnal

drift. The diurnal data were inspected for spikes and filtered to retain the longer

wavelength diurnal variations. The filtered diurnal data were subtracted from the total

magnetic field data after removal of a base value of 59423 nT. The resulting diurnally

corrected survey data were then leveled using tie and traverse line intercepts. Manual

adjustments were applied to any lines that required additional leveling, as indicated by

shadowed images of both the total field magnetic data and the calculated vertical

gradient data. A microlevelling filter was then applied to the manually adjusted leveled

total field data to provide a grid suitable for image processing presentation.

- 5.5-

The final magnetic field data were gridded using the bi-directional akima spline algorithm

and a grid cell size of 10 metres.

Calculated Vertical Magnetic Gradient

The diumally-corrected total magnetic field data were subjected to a processing algorithm

that enhances the response of magnetic bodies in the upper 500 m and attenuates the

response of deeper bodies. The resulting vertical gradient map provides better definition

and resolution of near-surface magnetic units. It also identifies weak magnetic features

that may not be evident on the total field map. However, regional magnetic variations and

changes in lithology may be better defined on the total magnetic field map.

Digital Elevation

The radar altimeter values (AL TR - aircraft to ground clearance) are subtracted from the

differentially corrected and de-spiked GPS-Z values to produce profiles of the height

above the ellipsoid along the survey lines. These values are gridded to produce contour

maps showing approximate elevations within the survey area. The calculated digital

terrain data are then tie-line leveled and adjusted to mean sea level. Any remaining

subtle line-to-line discrepancies are manually removed. After the manual corrections

are applied, the digital terrain data are filtered with a microleveling algorithm.

- 5.6-

The accuracy of the elevation calculation is directly dependent on the accuracy of the

two input parameters. AL TR and GPS-Z. The AL TR value may be erroneous in areas of

heavy tree cover, where the altimeter reflects the distance to the tree canopy rather than

the ground. The GPS-Z value is primarily dependent on the number of available

satellites. Although post-processing of GPS data will yield X and Y accuracies in the

order of 1-2 metres, the accuracy of the Z value is usually much less, sometimes in the

±10 metre range. Further inaccuracies may be introduced during the interpolation and

gridding process.

Because of the inherent inaccuracies of this method, no guarantee is made or implied

that the information displayed is a true representation of the height above sea level.

Although this product may be of some use as a general reference, TH IS PRODUCT

MUST NOT BE USED FOR NAVIGATION PURPOSES.

Contour, Colour and Shadow Map Displays

The geophysical data are interpolated onto a regular grid using a modified Akima spline

technique. The resulting grid is suitable for image processing and generation of contour

maps. The grid cell size is 20% of the line interval or 10 metres for this survey.

Colour maps are produced by interpolating the grid down to the pixel size. The parameter

is then incremented with respect to specific amplitude ranges to provide colour "contour"

maps.

- 5.7-

Monochromatic shadow maps or images are generated by employing an artificial sun to

cast shadows on a surface defined by the geophysical grid. There are many variations in

the shadowing technique. These techniques can be applied to total field or enhanced

magnetic data, magnetic derivatives, resistivity, etc. The shadowing technique is also

used as a quality control method to detect subtle changes between lines.

Multi-channel Stacked Profiles

Distance-based profiles of the digitally recorded geophysical data are generated and

plotted at an appropriate scale. These profiles also contain the calculated parameters that

are used in the interpretation process. These are produced as worksheets prior to

interpretation, and are also presented in the 'final corrected form after interpretation. The

profiles display electromagnetic anomalies with their respective interpretive symbols. Table

5-1 shows the parameters and scales for the multi-channel stacked profiles.

In Table 5-1, the log resistivity scale of 0.06 decade/mm means that the resistivity changes

by an order of magnitude in 16.6 mm. The resistivities at 0, 33 and 67 mm up from the

bottom of the digital profile are respectively 1, 100 and 10,000 ohm-m.

- 5.8-

Table 5-1. Multi-channel Stacked Profiles

Channel Scale Name (Freq) Observed Parameters Units/mm

MAG20 total magnetic field (fine) 20 nT MAG200 total magnetic field (coarse) 200 nT ALTBIROM EM sensor height above ground 6 m CXI1000 vertical coaxial coil-pair in-phase (1000 Hz) 2 ppm CX01000 vertical coaxial coil-pair quadrature (1000 Hz) 2 ppm CPI900 horizontal coplanar coil-pair in-phase (900 Hz) 4 ppm CP0900 horizontal coplanar coil-pair quadrature (900 Hz) 4 ppm CXI5500 vertical coaxial coil-pair in-phase (5500 Hz) 5 ppm

. CX05500 vertical coaxial coil-pair quadrature (5500 Hz) 5 ppm CPI7200 horizontal coplanar coil-pair in-phase (7200 Hz) 10 ppm CP07200 horizontal coplanar coil-pair quadrature (7200 Hz) 10 ppm CPI56K horizontal coplanar coil-pair in-phase (56,000 Hz) 10 ppm CP056K horizontal coplanar coil-pair quadrature (56,000 Hz) 10 ppm CXSP/4XSP coaxial spherics monitor CXPL coaxial powerline monitor CPPL coplanar powerline monitor

Computed Parameters OIFI ( mid freq.) difference function in-phase from CXI and CPI 10 ppm OIFO (mid freq.) difference function quadrature from CXO and CPO 10 ppm RES900 log resistivity .06 decade RES7200 log resistivity .06 decade RES56K log resistivity .06 decade OEP900 apparent depth 6 m

.OEP7200 apparent depth 6 m OEP56K apparent depth 6 m COT conductance 1 grade

- 6.9-

6. PRODUCTS

This section lists the final maps and products that have been provided under the terms

of the survey agreement. Other products can be prepared from the existing dataset, if

requested. These include magnetic enhancements or derivatives, percent magnetite,

resistivities corrected for magnetic permeability and/or dielectric permittivity, digital

terrain, resistivity-depth sections, inversions, and overburden thickness. Most

parameters can be displayed as contours, profiles, or in colour.

Base Maps

Base maps of the survey area were produced from digital topography supplied by

scanning published topographic maps to a bitmap (.bmp) format. This process provides

a relatively accurate, distortion-free base that facilitates correlation of the navigation

data to the map coordinate system. The topographic files were combined with

geophysical data for plotting the final maps. All maps were created using the following

parameters:

Pro'ection Description:

Datum: Ellipsoid: Projection: Central Meridian: False Northing: False Eastil1g: Scale Factor: WGS84 to Local Conversion: Datum Shifts:

NAD83 GRS80 UTM (Zone: 15) 93°W o 500000 0.9996 Molodensky DX: 0 DY: 0 DZ: 0

- 6.10 -

The following parameters are presented on two (2) map sheets, at a scale of '1: 1 0000. All

maps include flight lines and topography, unless otherwise indicated. Preliminary products

are not listed.

Final Products

EM Anomalies Total Magnetic Field Calculated Vertical Magnetic Gradient

I Apparent Resistivity 900 Hz Apparent Resistivity 7200 Hz Apparent Resistivity 56,000 Hz

Additional Products

Digital Archive (see Archive Description) Survey Report

I I

•

I i

Mylar I Blackline I Colour No. of Map Sets

4

1 CD-ROM 4 copies

I I

I

4 4 4 4 4

i

I

i

I

- 7.1 -

7. SURVEY RESULTS

General Discussion

Table 7-1 summarizes the EM responses in the survey area, with respect to conductance

grade and interpretation.

The anomalies shown on the electromagnetic anomaly maps are based on a near-vertical,

half plane model. This model best reflects "discrete" bedrock conductors. Wide bedrock

conductors or flat-lying conductive units, whether from surficial or bedrock sources, may

give rise to very broad anomalous responses on the EM profiles. These may not appear

on the electromagnetic anomaly map if they have a regional character rather than a locally

anomalous character.

These broad conductors, which more closely approximate a half-space model, will be

maximum coupled to the horizontal (coplanar) coil-pair and should be more evident on the

resistivity parameter. Resistivity maps, therefore, may be more valuable than the

electromagnetic anomaly maps, in areas where broad or flat-lying conductors are

considered to be of importance. Contoured resistivity maps, based on all coplanar data

are included with this report.

CONDUCTOR GRADE

7 6 5 4 3 2 1 *

TOTAL

CONDUCTOR MODEL

D B S H E L

TOTAL

- 7.2-

TABLE 7-1 EM ANOMALY STATISTICS

BIRCH LAKE AREA, ONTARIO

CONDUCTANCE RANGE SIEMENS (MHOS)

>100 50 - 100 20 - 50 10 - 20 5 - 10 1 - 5

<1 INDETERMINATE

MOST LlKEL Y SOURCE

DISCRETE BEDROCK CONDUCTOR DISCRETE BEDROCK CONDUCTOR CONDUCTIVE COVER ROCK UNIT OR THICK COVER EDGE OF WIDE CONDUCTOR CULTURE

(SEE EM MAP LEGEND FOR EXPLANATIONS)

NUMBER OF RESPONSES

0 0 0 0 0

55 348 238

641

NUMBER OF RESPONSES

0 7

630 0 1 3

641

- 7.3-

Excellent resolution and discrimination of conductors was accomplished by using a fast

sampling rate of 0.1 sec and by employing a "cornmon" frequency (5500/7200 Hz) on two

orthogonal coil-pairs (coaxial and coplanar). The resulting difference channel parameters

often permit differentiation of bedrock and surficial conductors, even though they may

exhibit similar conductance values.

Anomalies that occur near the ends of the survey lines (i.e., outside the survey area),

should be viewed with caution. Some of the weaker anomalies could be due to

aerodynamic noise, i.e., bird bending, which is created by abnormal stresses to which the

bird is subjected during the climb and turn of the aircraft between lines. Such

aerodynamic noise is usually manifested by an anomaly on the coaxial in-phase channel

only, although severe stresses can affect the coplanar in-phase channels as well.

Magnetics

A Fugro CF-1 cesium vapour magnetometer was operated at the survey base to record

diurnal variations of the earth's magnetic field. The clock of the base station was

synchronized with that of the airborne system to permit subsequent removal of diurnal

drift. A GEM Systems GSM-19T proton precession magnetometer was also operated as a

backup unit.

- 7.4-

The total magnetic field data have been presented as contours on the base map using a

contour interval of 5 nT where gradients permit. The maps show the magnetic properties

of the rock units underlying the survey areas.

The total magnetic field data have been subjected to a processing algorithm to produce

maps of the calculated vertical gradient. This procedure enhances near-surface magnetic

units and suppresses regional gradients. It also provides better definition and resolution of

magnetic units and displays weak magnetic features that may not be clearly evident on the

total field maps.

There is some evidence on the magnetic maps that suggests that the survey area has

been subjected to deformation and/or alteration. These structural complexities are evident

on the contour maps as variations in magnetic intensity, irregular patterns, and as offsets

or changes in strike direction.

If a specific magnetic intensity can be assigned to the rock type that is believed to host the

target mineralization, it may be possible to select areas of higher priority on the basis of

the total field magnetic data. This is based on the assumption that the magnetite content

of the host rocks will give rise to a limited range of contour values that will permit

differentiation of various lithological units.

- 7.5-

The magnetic results, in conjunction with the other geophysical parameters, have provided

valuable information that can be used to effectively map the geology and structure in the

survey area.

Apparent Resistivity

Apparent resistivity maps, which display the conductive properties of the survey area, were

produced from the 900 Hz, 7200 Hz and 56,000 Hz coplanar data. The maximum

resistivity values, which are calculated for each frequency, are 2,000 10,000 and 50,000

ohm-m respectively. These cutoffs eliminate the erratic higher resistivities that would

result from unstable ratios of very small EM amplitudes.

In general. the resistivity patterns show little agreement with the magnetic trends. This

suggests that many of the resistivity lows are probably related to conductive overburden.

There are other resistivity lows in the area. Some of these are quite extensive and often

reflect "formational" conductors that may be of minor interest as direct exploration targets.

However. attention may be focused on areas where these zones appear to be faulted or

folded or where anomaly characteristics differ along strike.

- 7.6-

Electromagnetic Anomalies

The EM anomalies resulting from this survey appear to fall within one of three general

categories. The first type consists of discrete, well-defined anomalies that yield marked

inflections on the difference channels. These anomalies are usually attributed to

conductive sulphides or graphite and are generally given a "8", or "0" interpretive symbol,

denoting a bedrock source.

The second class of anomalies comprises moderately broad responses that exhibit the

characteristics of a half-space and do not yield well-defined inflections on the difference

channels. Anomalies in this category are usually given an "S" or "H" interpretive symbol.

The lack of a difference channel response usually implies a broad or flat-lying conductive

source such as overburden. Some of these anomalies could reflect conductive rock units,

zones of deep weathering, or the weathered tops of kimberlite pipes, all of which can yield

"non-discrete" signatures.

The effects of conductive overburden are evident over portions of the survey area(s).

Although the difference channels (OIFI and OIFQ) are extremely valuable in detecting

bedrock conductors that are partially masked by conductive overburden, sharp undulations

in the bedrock/overburden interface can yield anomalies in the difference channels which

may be interpreted as possible bedrock conductors. Such anomalies usually fall into the

"S?" or "8?" classification but may also be given an "E" interpretive symbol, denoting a

resistivity contrast at the edge of a conductive unit.

- 7.7-

The "?" symbol does not question the validity of an anomaly, but instead indicates some

degree of uncertainty as to which is the most appropriate EM source model. This

ambiguity results from the combination of effects from two or more conductive sources,

such as overburden and bedrock, gradational changes, or moderately shallow dips. The

presence of a conductive upper layer has a tendency to mask or alter the characteristics

of bedrock conductors, making interpretation difficult. This problem is further exacerbated

in the presence of magnetite.

In areas where EM responses are evident primarily on the quadrature components, zones

of poor conductivity are indicated. Where these responses are coincident with magnetic

anomalies, it is possible that the in-phase component amplitudes have been suppressed

by the effects of magnetite. Poorly-conductive magnetic features can give rise to

resistivity anomalies that are only slightly below or slightly above background. If it is

expected that poorly-conductive economic mineralization could be associated with

magnetite-rich units, most of these weakly anomalous features will be of interest. In areas

where magnetite causes the in-phase components to become negative, the apparent

conductance and depth of EM anomalies will be unreliable. Magnetite effects usually give

rise to overstated (higher) resistivity values and understated (shallow) depth calculations.

The third class consists of cultural anomalies which are usually given the symbol ilL" or

OIL ?". Anomalies in this category can include telephone or power lines, pipelines, railways,

fences, metal bridges or culverts, buildings and other metallic structures.

- 7.8-

It is impractical to assess the relative merits of EM anomalies on the basis of conductance.

It is recommended that an attempt be made to compile a suite of geophysical "signatures"

over any known areas of interest. Anomaly characteristics are clearly defined on the multi­

parameter geophysical data profiles that are supplied as one of the survey products.

- 8.1 -

8. CONCLUSIONS AND RECOMMENDATIONS

This report provides a very brief description of the survey results and describes the

equipment, data processing procedures and logistics of the survey.

The survey was successful in locating a few moderately weak or broad conductors that

may warrant additional work. The various maps included with this report display the

magnetic and conductive properties of the survey area. It is recommended that a

complete assessment and detailed evaluation of the survey results be carried out, in

conjunction with all available geophysical, geological and geochemical information.

Particular reference should be made to the multi-parameter data profiles that clearly define

the characteristics of the individual anomalies.

Most anomalies in the area are moderately weak (strong) and poorly(well)-defined. Many

have been attributed to conductive overburden or deep weathering, although a few appear

to be associated with magnetite-rich rock units. Others coincide with magnetic gradients

that may reflect contacts, faults or shears. Such structural breaks are considered to be of

particular interest as they may have influenced mineral deposition within the survey area.

The interpreted bedrock conductors and anomalous targets defined by the survey should

be subjected to further investigation, using appropriate surface exploration techniques.

Anomalies that are currently considered to be of moderately low priority may require

upgrading if follow-up results are favourable.

- 8.2-

It is also recommended that image processing of existing geophysical data be considered,

in order to extract the maximum amount of information from the survey results. Current

software and imaging techniques often provide valuable information on structure and

lithology, which may not be clearly evident on the contour and colour maps. These

techniques can yield images that define subtle, but significant, structural details.

Respectfully submitted,

FUGRO AIRBORNE SURVEYS CORP.

Douglas Garrie Geophysicist

APPENDIX A

LIST OF PERSONNEL

The following personnel were involved in the acquisition, processing, interpretation and presentation of data, relating to a DIGHEM airborne geophysical survey carried out for Trade Winds Ventures Inc., near Red Lake, Ontario

David Miles Emily Farquhar Yuri Mironenko Mark Stephens Bill Hofstede Igor Sram Doug Garrie Lyn Vanderstarren Susan Pothiah Albina Tonello

Manager, Helicopter Operations Manager, Data Processing and Interpretation Senior Geophysical Operator Field Geophysicist Pilot (Questral Helicopters Ltd.) Geophysical Data Processor Interpretation Geophysicist Drafting Supervisor Word Processing Operator Secretary/Expeditor

The survey consisted of 592.5 km of coverage, flown from April 6th to April 7'h , 2005.

All personnel are employees of Fugro Airborne Surveys, except for the pilot who is an employee of Questral Helicopters Ltd.

APPENDIX B

BACKGROUND INFORMATION

- Appendix C.1 -

BACKGROUND INFORMATION

Electromagnetics

Fugro electromagnetic responses fall into two general classes, discrete and broad. The discrete class consists of sharp, well-defined anomalies from discrete conductors such as sulphide lenses and steeply dipping sheets of graphite and sulphides. The broad class consists of wide anomalies from conductors having a large horizontal surface such as flatly dipping graphite or sulphide sheets, saline water-saturated sedimentary formations, conductive overburden and rock, kimberlite pipes and geothermal zones. A vertical conductive slab with a width of 200 m would straddle these two classes.

The vertical sheet (half plane) is the most common model used for the analysis of discrete conductors. All anomalies plotted on the geophysical maps are analyzed according to this model. The following section entitled Discrete Conductor Analysis describes this model in detail, including the effect of using it on anomalies caused by broad conductors such as conductive overburden.

The conductive earth (half-space) model is suitable for broad conductors. Resistivity contour maps result from the use of this model. A later section entitled Resistivity Mapping describes the method further, including the effect of using it on anomalies caused by discrete conductors such as sulphide bodies.

Geometri c I nterpretati on

The geophysical interpreter attempts to determine the geometric shape and dip of the conductor. Figure C-1 shows typical HEM anomaly shapes which are used to guide the geometric interpretation.

Discrete Conductor Analysis

The EM anomalies appearing on the electromagnetic map are analyzed by computer to give the conductance (i.e., conductivity-thickness product) in siemens (mhos) of a vertical sheet model. This is done regardless of the interpreted geometric shape of the conductor. This is not an unreasonable procedure, because the computed conductance increases as the electrical quality of the conductor increases, regardless of its true shape. DIGHEM anomalies are divided into seven grades of conductance, as shown in Table C-1. The conductance in siemens (mhos) is the reciprocal of resistance in ohms.

Conductor location and symbol

Coaxial EM channel

Coplanar EM channel

Difference channel

Conductor model

Ratio of amplitudes CXIICPI

Possible source

- Appendix C.2 -

l D D T B,orL H,S,orL B,H,S

~ ~ ~ ~ ~ ~

J\J\J\~ ~ F'-

.IV'\. MJ\ J\ J\ AAA VVV---V--

line

2/1

wire, culture

vertical thin dike

1/1

sulphides graphite

\ 0 dipping thin dike

variable

sulphides graphite

vertical or dipping thick dike

variable

>10m thick sulphides or graphite

o sphere; metal roof; small fenced yard

1/8

sphencal orebody culture

horizontal disk; wide horizontal ribbon; large fenced area

variable

weathered zone of pipe (eg. kimberlite) or culture

vertical cylinder

variable

weathered zone of pipe (eg. kimberlite)

Typical HEM anomaly shapes Figure C~1

S,H E B,D

~ ~ ~

f'\ ______

~--.............

I.. ,. ... "'"," ,. .J flat-lying sheet or half space

114

S conductive overburden H " thick conductive cover

or wide conductive rock unit E " edge effect from wide

conductor

flight line parallel to conductor

<1/8

sulphides graphite

- Appendix C.3 -

The conductance value is a geological parameter because it is a characteristic of the conductor alone. It generally is independent of frequency, flying height or depth of burial, apart from the averaging over a greater portion of the conductor as height increases. Small anomalies from deeply buried strong conductors are not confused with small anomalies from shallow weak conductors because the former will have larger conductance values.

Table C-1. EM Anomaly Grades

I Anomaly Grade Siemens 7 > 100 6 50 - 100

I 5 20 - 50 4 10 20

I 3 5 10

I 2 1 5

I 1 < 1

Conductive overburden generally produces broad EM responses which may not be shown as anomalies on the geophysical maps. However, patchy conductive overburden in otherwise resistive areas can yield discrete anomalies with a conductance grade (cf. Table C-1) of 1, 2 or even 3 for conducting clays which have resistivities as low as 50 ohm-m. In areas where ground resistivities are below 10 ohm-m, anomalies caused by weathering variations and similar causes can have any conductance grade. The anomaly shapes from the multiple coils often allow such conductors to be recognized, and these are indicated by the letters S, H, and sometimes E on the geophysical maps (see EM legend on maps).

For bedrock conductors, the higher anomaly grades indicate increasingly higher conductances. Examples: the l\Jew Insco copper discovery (Noranda, Canada) yielded a grade 5 anomaly, as did the neighbouring copper-zinc Magusi River ore body; Mattabi (copper-zinc, Sturgeon Lake, Canada) and Whistle (nickel, Sudbury, Canada) gave grade 6; and the Montcalm nickel-copper discovery (Timmins, Canada) yielded a grade 7 anomaly. Graphite and sulphides can span all grades but, in any particular survey area, field work may show that the different grades indicate different types of conductors.

Strong conductors (Le., grades 6 and 7) are characteristic of massive sulphides or graphite. Moderate conductors (grades 4 and 5) typically reflect graphite or sulphides of a less massive character, while weak bedrock conductors (grades 1 to 3) can signify poorly connected graphite or heavily disseminated sulphides. Grades 1 and 2 conductors may not respond to ground EM equipment using frequencies less than 2000 Hz.

The presence of sphalerite or gangue can result in ore depOSits having weak to moderate conductances. As an example, the three million ton lead-zinc deposit of Restjgouche Mining Corporation near Bathurst, Canada, yielded a well-defined grade 2 conductor. The 10 percent by volume of sphalerite occurs as a coating around the fine grained massive

- Appendix C.4 -

pyrite, thereby inhibiting electrical conduction. Faults, fractures and shear zones may produce anomalies that typically have low conductances (e.g., grades 1 to 3). Conductive rock formations can yield anomalies of any conductance grade. The conductive materials in such rock formations can be salt water, weathered products such as clays, original depositional clays, and carbonaceous material.

For each interpreted electromagnetic anomaly on the geophysical maps, a letter identifier and an interpretive symbol are plotted beside the EM grade symbol. The horizontal rows of dots, under the interpretive symbol, indicate the anomaly amplitude on the flight record. The vertical column of dots, under the anomaly letter, gives the estimated depth. In areas where anomalies are crowded, the letter identifiers, interpretive symbols and dots may be obliterated. The EM grade symbols, however, will always be discernible, and the obliterated information can be obtained from the anomaly listing appended to this report.

The purpose of indicating the anomaly amplitude by dots is to provide an estimate of the reliability of the conductance calculation. Thus, a conductance value obtained from a large ppm anomaly (3 or 4 dots) will tend to be accurate whereas one obtained from a small ppm anomaly (no dots) could be quite inaccurate. The absence of amplitude dots indicates that the anomaly from the coaxial coil-pair is 5 ppm or less on both the in-phase and quadrature channels. Such small anomalies could reflect a weak conductor at the surface or a stronger conductor at depth. The conductance grade and depth estimate illustrates which of these possibilities fits the recorded data best.

The conductance measurement is considered more reliable than the depth estimate. There are a number of factors that can produce an error in the depth estimate, including the averaging of topographic variations by the altimeter, overlying conductive overburden, and the location and attitude of the conductor relative to the flight line. Conductor location and attitude can provide an erroneous depth estimate because the stronger part of the conductor may be deeper or to one side of the flight line, or because it has a shallow dip. A heavy tree cover can also produce errors in depth estimates. This is because the depth estimate is computed as the distance of bird from conductor, minus the altimeter reading. The altimeter can lock onto the top of a dense forest canopy. This situation yields an erroneously large depth estimate but does not affect the conductance estimate.

Dip symbols are used to indicate the direction of dip of conductors. These symbols are used only when the anomaly shapes are unambiguous, which usually requires a fairly resistive environment.

A further interpretation is presented on the EM map by means of the line-to-line correlation of bedrock anomalies, which is based on a comparison of anomaly shapes on adjacent lines. This provides conductor axes that may define the geological structure over portions of the survey area. The absence of conductor axes in an area implies that anomalies could not be correlated from line to line with reasonable confidence.

The electromagnetic anomalies are designed to provide a correct impression of conductor quality by means of the conductance grade symbols. The symbols can stand alone with

- Appendix C.5 -

geology when planning a follow-up program. The actual conductance values are printed in the attached anomaly list for those who wish quantitative data. The anomaly ppm and depth are indicated by inconspicuous dots which should not distract from the conductor patterns, while being helpful to those who wish this information. The map provides an interpretation of conductors in terms of length, strike and dip, geometric shape, conductance, depth, and thickness. The accuracy is comparable to an interpretation from a high quality ground EM survey having the same line spacing.

The appended EM anomaly list provides a tabulation of anomalies in ppm, conductance, and depth for the vertical sheet model. No conductance or depth estimates are shown for weak anomalous responses that are not of sufficient amplitude to yield reliable calculations.

Since discrete bodies normally are the targets of EM surveys, local base (or zero) levels are used to compute local anomaly amplitudes. This contrasts with the use of true zero levels which are used to compute true EM amplitudes. Local anomaly amplitudes are shown in the EM anomaly list and these are used to compute the vertical sheet parameters of conductance and depth.

Questionable Anomalies

The EM maps may contain anomalous responses that are displayed as asterisks (*). These responses denote weak anomalies of indeterminate conductance, which may reflect one of the following: a weak conductor near the surface, a strong conductor at depth (e.g., 100 to 120 m below surface) or to one side of the flight line, or aerodynamic noise. Those responses that have the appearance of valid bedrock anomalies on the flight profiles are indicated by appropriate interpretive symbols (see EM legend on maps). The others probably do not warrant further investigation unless their locations are of considerable geological interest.

The Thickness Parameter

A comparison of coaxial and coplanar shapes can provide an indication of the thickness of a steeply dipping conductor. The amplitude of the coplanar anomaly (e.g., ePI channel) increases relative to the coaxial anomaly (e.g., eXI) as the apparent thickness increases, I.e., the thickness in the horizontal plane. (The thickness is equal to the conductor width if the conductor dips at 90 degrees and strikes at right angles to the flight line.) This report refers to a conductor as thin when the thickness is likely to be less than 3 m, and thick when in excess of 10m. Thick conductors are indicated on the EM map by parentheses "( )". For base metal exploration in steeply dipping geology, thick conductors can be high priority targets because many massive sulphide ore bodies are thick. The system cannot sense the thickness when the strike of the conductor is subparallel to the flight line, when the conductor has a shallow dip, when the anomaly amplitudes are small, or when the resistivity of the environment is below 100 ohm-m.

- Appendix C.6 -

Resistivity Mapping

Resistivity mapping is useful in areas where broad or flat lying conductive units are of interest. One example of this is the clay alteration which is associated with Carlin-type deposits in the south west United States. The resistivity parameter was able to identify the clay alteration zone over the Cove deposit. The alteration zone appeared as a strong resistivity low on the 900 Hz resistivity parameter. The 7,200 Hz and 56,000 Hz resistivities showed more detail in the covering sediments, and delineated a range front fault. This is typical in many areas of the south west United States, where conductive near surface sediments, which may sometimes be alkalic, attenuate the higher frequencies.

Resistivity mapping has proven successful for locating diatremes in diamond exploration. Weathering products from relatively soft kimberlite pipes produce a resistivity contrast with the unaltered host rock. In many cases weathered kimberlite pipes were associated with thick conductive layers that contrasted with overlying or adjacent relatively thin layers of lake bottom sediments or overburden.

Areas of widespread conductivity are commonly encountered during surveys. These conductive zones may reflect alteration zones, shallow-dipping sulphide or graphite-rich units, saline ground water, or conductive overburden. In such areas, EM amplitude changes can be generated by decreases of only 5 m in survey altitude, as well as by increases in conductivity. The typical flight record in conductive areas is characterized by in-phase and quadrature channels that are continuously active. Local EM peaks reflect either increases in conductivity of the earth or decreases in survey altitude. For such conductive areas, apparent resistivity profiles and contour maps are necessary for the correct interpretation of the airborne data. The advantage of the resistivity parameter is that anomalies caused by altitude changes are virtually eliminated, so the resistivity data reflect only those anomalies caused by conductivity changes. The resistivity analysis also helps the interpreter to differentiate between conductive bedrock and conductive overburden. For example, discrete conductors will generally appear as narrow lows on the contour map and broad conductors (e.g., overburden) will appear as wide lows.

The apparent resistivity is calculated using the pseudo-layer (or buried) half-space model defined by Fraser (1978)1. This model consists of a resistive layer overlying a conductive half-space. The depth channels give the apparent depth below surface of the conductive material. The apparent depth is simply the apparent thickness of the overlying resistive layer. The apparent depth (or thickness) parameter will be positive when the upper layer is more resistive than the underlying material, in which case the apparent depth may be quite close to the true depth.

Resistivity mapping with an airborne multicoil electromagnetic system: Geophysics, v. 43, p.144-172

- Appendix C.? -

The apparent depth will be negative when the upper layer is more conductive than the underlying material, and will be zero when a homogeneous half-space exists. The apparent depth parameter must be interpreted cautiously because it will contain any errors that might exist in the measured altitude of the EM bird (e.g., as caused by a dense tree cover). The inputs to the resistivity algorithm are the in-phase and quadrature components of the coplanar coil-pair. The outputs are the apparent resistivity of the conductive half-space (the source) and the sensor-source distance. The flying height is not an input variable, and the output resistivity and sensor-source distance are independent of the flying height when the conductivity of the measured material is sufficient to yield significant in-phase as well as quadrature responses. The apparent depth, discussed above, is simply the sensor-source distance minus the measured altitude or flying height. Consequently, errors in the measured altitude will affect the apparent depth parameter but not the apparent resistivity parameter.

The apparent depth parameter is a useful indicator of simple layering in areas lacking a heavy tree cover. Depth information has been used for permafrost mapping, where positive apparent depths were used as a measure of permafrost thickness. However, little quantitative use has been made of negative apparent depths because the absolute value of the negative depth is not a measure of the thickness of the conductive upper layer and, therefore, is not meaningful physically. Qualitatively, a negative apparent depth estimate usually shows that the EM anomaly is caused by conductive overburden. Consequently, the apparent depth channel can be of significant help in distinguishing between overburden and bedrock conductors.

Interpretation in Conductive Environments

Environments having low background resistivities (e.g., below 30 ohm-m for a 900 Hz system) yield very large responses from the conductive ground. This usually prohibits the recognition of discrete bedrock conductors. However, Fugro data processing techniques produce three parameters that contribute Significantly to the recognition of bedrock conductors in conductive environments. These are the in-phase and quadrature difference channels (DIFI and DIFQ, which are available only on systems with "common" frequencies on orthogonal coil pairs), and the reSistivity and depth channels (RES and DEP) for each coplanar frequency.

The EM difference channels (DIFI and DIFQ) eliminate most of the responses from conductive ground, leaving responses from bedrock conductors, cultural features (e.g., telephone lines, fences, etc.) and edge effects. Edge effects often occur near the perimeter of broad conductive zones. This can be a source of geologic noise. While edge effects yield anomalies on the EM difference channels, they do not produce resistivity anomalies. Consequently, the resistivity channel aids in eliminating anomalies due to edge effects. On the other hand, resistivity anomalies will coincide with the most highly conductive sections of conductive ground, and this is another source of geologic noise. The recognition of a bedrock conductor in a conductive environment therefore is based on the anomalous responses of the two difference channels (DIFI and DIFQ) and the

- Appendix C.B-

resistivity channels (RES). The most favourable situation is where anomalies coincide on all channels.

The DEP channels, which give the apparent depth to the conductive material, also help to determine whether a conductive response arises from surficial material or from a conductive zone in the bedrock. When these channels ride above the zero level on the depth profiles (i.e., depth is negative), it implies that the EM and resistivity profiles are responding primarily to a conductive upper layer, i.e., conductive overburden. If the DEP channels are below the zero level, it indicates that a resistive upper layer exists, and this usually implies the existence of a bedrock conductor. If the low frequency DEP channel is below the zero level and the high frequency DEP is above, this suggests that a bedrock conductor occurs beneath conductive cover.

Reduction of Geologic Noise

Geologic noise refers to unwanted geophysical responses. For purposes of airborne EM surveying, geologic noise refers to EM responses caused by conductive overburden and magnetic permeability. It was mentioned previously that the EM difference channels (i.e., channel DIFI for in-phase and DIFQ for quadrature) tend to eliminate the response of conductive overburden.

Magnetite produces a form of geological noise on the in-phase channels. Rocks containing less than 1 % magnetite can yield negative in-phase anomalies caused by magnetic permeability. When magnetite is widely distributed throughout a survey area, the in-phase EM channels may continuously rise and fall, reflecting variations in the magnetite percentage, flying height, and overburden thickness. This can lead to difficulties in recognizing deeply buried bedrock conductors, particularly if conductive overburden also exists. However, the response of broadly distributed magnetite generally vanishes on the in-phase difference channel DIFI. This feature can be a significant aid in the recognition of conductors that occur in rocks containing accessory magnetite.

EM Magnetite Mapping

The information content of HEM data consists of a combination of conductive eddy current responses and magnetic permeability responses. The secondary field resulting from conductive eddy current flow is frequency-dependent and consists of both in-phase and quadrature components, which are positive in sign. On the other hand, the secondary field resulting from magnetic permeability is independent of frequency and consists of only an in-phase component which is negative in sign. When magnetic permeability manifests itself by decreasing the measured amount of positive in-phase, its presence may be difficult to recognize. However, when it manifests itself by yielding a negative in-phase anomaly (e.g., in the absence of eddy current flow), its presence is assured. In this latter case, the negative component can be used to estimate the percent magnetite content.

A magnetite mapping technique, based on the low frequency coplanar data, can be complementary to magnetometer mapping in certain cases. Compared to magnetometry,

- Appendix C.g -

it is far less sensitive but is more able to resolve closely spaced magnetite zones, as well as providing an estimate of the amount of magnetite in the rock. The method is sensitive to 1/4% magnetite by weight when the EM sensor is at a height of 30 m above a magnetitic half-space. It can individually resolve steep dipping narrow magnetite-rich bands which are separated by 60 m. Unlike magnetometry, the EM magnetite method is unaffected by remanent magnetism or magnetic latitude.

The EM magnetite mapping technique provides estimates of magnetite content which are usually correct within a factor of 2 when the magnetite is fairly uniformly distributed. EM magnetite maps can be generated when magnetic permeability is evident as negative in­phase responses on the data profiles.

Like magnetometry, the EM magnetite method maps only bedrock features, provided that the overburden is characterized by a general lack of magnetite. This contrasts with resistivity mapping which portrays the combined effect of bedrock and overburden.

The Susceptibility Effect

When the host rock is conductive, the positive conductivity response will usually dominate the secondary field, and the susceptibility effect2 will appear as a reduction in the in-phase, rather than as a negative value. The in-phase response will be lower than would be predicted by a model using zero susceptibility. At higher frequencies the in­phase conductivity response also gets larger, so a negative magnetite effect observed on the low frequency might not be observable on the higher frequencies, over the same body. The susceptibility effect is most obvious over discrete magnetite-rich zones, but also occurs over uniform geology such as a homogeneous half-space.

High magnetic susceptibility will affect the calculated apparent resistivity, if only conductivity is considered. Standard apparent resistivity algorithms use a homogeneous half-space model, with zero susceptibility. For these algorithms, the reduced in-phase response will, in most cases, make the apparent resistivity higher than it should be. It is important to note that there is nothing wrong with the data, nor is there anything wrong with the processing algorithms. The apparent difference results from the fact that the simple geological model used in processing does not match the complex geology.

2 Magnetic susceptibility and permeability are two measures of the same physical property.

Permeability is generally given as relative permeability, IJr, which is the permeability of the substance divided by the permeability of free space (4 11: x 10-7

). Magnetic susceptibility k is related to permeability by /r-lJr-1. Susceptibility is a unitless measurement, and is usually reported in units of 10-6. The typical range of susceptibilities is -1 for quartz, 130 for pyrite, and up to 5 X

105 for magnetite, in 10-6 units (Telford et ai, 1986).

- Appendix C.1 0 -

Measuring and Correcting the Magnetite Effect

Theoretically, it is possible to calculate (forward model) the combined effect of electrical conductivity and magnetic susceptibility on an EM response in all environments. The difficulty lies, however, in separating out the susceptibility effect from other geological effects when deriving resistivity and susceptibility from EM data.

Over a homogeneous half-space, there is a precise relationship between in-phase, quadrature, and altitude. These are often resolved as phase angle, amplitude, and altitude. Within a reasonable range, any two of these three parameters can be used to calculate the half space resistivity. If the rock has a positive magnetic susceptibility, the in-phase component will be reduced and this departure can be recognized by comparison to the other parameters.

The algorithm used to calculate apparent susceptibility and apparent resistivity from HEM data, uses a homogeneous half-space geological model. Non half-space geology, such as horizontal layers or dipping sources, can also distort the perfect half-space relationship of the three data parameters. While it may be possible to use more complex models to calculate both rock parameters, this procedure becomes very complex and time-consuming. For basic HEM data processing, it is most practical to stick to the simplest geological model.

Magnetite reversals (reversed in-phase anomalies) have been used for many years to calculate an "FeO" or magnetite response from HEM data (Fraser, 1981). However, this technique could only be applied to data where the in-phase was observed to be negative, which happens when susceptibility is high and conductivity is low.

Applying Susceptibility Corrections

Resistivity calculations done with susceptibility correction may change the apparent resistivity. High-susceptibility conductors, that were previously masked by the susceptibility effect in standard resistivity algorithms, may become evident. In this case the susceptibility corrected apparent resistivity is a better measure of the actual resistivity of the earth. However, other geological variations, such as a deep resistive layer, can also reduce the in-phase by the same amount. In this case, susceptibility correction would not be the best method. Different geological models can apply in different areas of the same data set. The effects of susceptibility, and other effects that can create a similar response, must be considered when selecting the resistivity algorithm.

Susceptibility from EM vs Magnetic Field Data

The response of the EM system to magnetite may not match that from a magnetometer survey. First, HEM-derived susceptibility is a rock property measurement, like reSistivity. Magnetic data show the total magnetic field, a measure of the potential field, not the

- Appendix C.11 -

rock property. Secondly, the shape of an anomaly depends on the shape and direction of the source magnetic field. The electromagnetic field of HEM is much different in shape from the earth's magnetic field. Total field magnetic anomalies are different at different magnetic latitudes; HEM susceptibility anomalies have the same shape regardless of their location on the earth.

In far northern latitudes, where the magnetic field is nearly vertical, the total magnetic field measurement over a thin vertical dike is very similar in shape to the anomaly from the HEM-derived susceptibility (a sharp peak over the body). The same vertical dike at the magnetic equator would yield a negative magnetic anomaly, but the HEM susceptibility anomaly would show a positive susceptibility peak.

Effects of Permeability and Dielectric Permittivity

Resistivity algorithms that assume free-space magnetic permeability and dielectric permittivity, do not yield reliable values in highly magnetic or highly resistive areas. Both magnetic polarization and displacement currents cause a decrease in the in-phase component, often resulting in negative values that yield erroneously high apparent resistivities. The effects of magnetite occur at all frequencies, but are most evident at the lowest frequency. Conversely, the negative effects of dielectric permittivity are most evident at the higher frequencies, in resistive areas.

The table below shows the effects of varying permittivity over a resistive (10,000 ohm­m) half space, at frequencies of 56,000 Hz (DIGHEMv) and 102,000 Hz (RESOLVE).

Apparent Resistivity Calculations Effects of Permittivity on In-phase/Quadrature/Resistivity

i Freq I

Coil \ Sep Thres \ Alt In Quad -\ App App Depth Permittivity • (Hz) • (m) (ppm) (m) Phase Phase Res (m) i

56,000 i CP 6.3 0.1 30 7.3 35.3 10118 -1.0 1 Air •

56,000 CP 6.3 0.1 I 30 ! 3.6 36.6 19838 -13.2 5 Quartz ~56,000 I CP 6.3 0.1 I 30 -1.1 38.3 • 81832 -25.7 10 Epidote L~6,000 CP 6.3 0.1 30 -1004 42.3 76620 -25.8 i 20 Granite I

56,000 CP 6.3 0.1 I 30 -19.7 46.9 ! 71550 -26.0 . 30 Diabase 56,000 CP 6.3 0.1 I 30 -28.7 I 52.0 • 66787 -26.1 .40 Gabbro

H02,000! CP 7.86 I 0.1 i 30 32.5 117.2 9409 -0.3 1 Air . 102,000 CP 7.86 0.1 I 30 I 11.7 ! 127.2 25956 -16.8 5 Quartz I

102.011= CP 7.86 ! 0.1 I 30 -14.0 i 141.6 97064 -26.5 10 Epidote 102,00 CP 7.86 0.1 , 30 -62.9 . 176.0 83995 -26.8 ! 20 Granite 102,000 CP 7.86 0.1 I 30 -107.5 i 215.8 73320 -27.0 30 Diabase ~Q2,000 CP 7.86 i 0.1 I 30 1-1<tf.1 259.2 64875 -27.2 40 Gabbro

- Appendix C.12 -

Methods have been developed (Huang and Fraser, 2000, 2001) to correct apparent resistivities for the effects of permittivity and permeability. The corrected resistivities yield more credible values than if the effects of permittivity and permeability are disregarded.

Recognition of Culture

Cultural responses include all EM anomalies caused by man-made metallic objects. Such anomalies may be caused by inductive coupling or current gathering. The concern of the interpreter is to recognize when an EM response is due to culture. Points of consideration used by the interpreter, when coaxial and coplanar coil-pairs are operated at a common frequency, are as follows:

1. Channels CXPL and CPPL monitor 60 Hz radiation. An anomaly on these channels shows that the conductor is radiating power. Such an indication is normally a guarantee that the conductor is cultural. However, care must be taken to ensure that the conductor is not a geologic body that strikes across a power line, carrying leakage currents.

2. A flight that crosses a "line" (e.g., fence, telephone line. etc.) yields a centre­peaked coaxial anomaly and an m-shaped coplanar anomaly.3 When the flight crosses the cultural line at a high angle of intersection, the amplitude ratio of coaxial/coplanar response is 2. Such an EM anomaly can only be caused by a line. The geologic body that yields anomalies most closely resembling a line is the vertically dipping thin dike. Such a body, however, yields an amplitude ratio of 1 rather than 2. Consequently, an m-shaped coplanar anomaly with a CXI/CPI amplitude ratio of 2 is virtually a guarantee that the source is a cultural line.

3. A flight that crosses a sphere or horizontal disk yields centre-peaked coaxial and coplanar anomalies with a CXI/CPI amplitude ratio (Le., coaxial/coplanar) of 1/8. In the absence of geologic bodies of this geometry, the most likely conductor is a metal roof or small fenced yard.4 Anomalies of this type are virtually certain to be cultural if they occur in an area of culture.

4. A flight that crosses a horizontal rectangular body or wide ribbon yields an m­shaped coaxial anomaly and a centre-peaked coplanar anomaly. In the absence of geologic bodies of this geometry. the most likely conductor is a large fenced area.s Anomalies of this type are virtually certain to be cultural if they occur in an area of culture.

3 See Figure C-1 presented earlier.

4 It is a characteristic of EM that geometrically similar anomalies are obtained from: (1) a

planar conductor, and (2) a wire which forms a loop having dimensions identical to the perimeter of the equivalent planar conductor.

-Appendix C.13-

5. EM anomalies that coincide with culture, as seen on the camera film or video display, are usually caused by culture. However, care is taken with such coincidences because a geologic conductor could occur beneath a fence, for example. In this example, the fence would be expected to yield an m-shaped coplanar anomaly as in case #2 above. If, instead, a centre-peaked coplanar anomaly occurred, there would be concern that a thick geologic conductor coincided with the cultural line.

6. The above description of anomaly shapes is valid when the culture is not conductively coupled to the environment. In this case, the anomalies arise from inductive coupling to the EM transmitter. However, when the environment is quite conductive (e.g., less than 100 ohm-m at 900 Hz), the cultural conductor may be conductively coupled to the environment. In this latter case, the anomaly shapes tend to be governed by current gathering. Current gathering can completely distort the anomaly shapes, thereby complicating the identification of cultural anomalies. In such circumstances, the interpreter can only rely on the radiation channels and on the camera film or video records.

Magnetic Responses

The measured total magnetic field provides information on the magnetic properties of the earth materials in the survey area. The information can be used to locate magnetic bodies of direct interest for exploration, and for structural and lithological mapping.

The total magnetic field response reflects the abundance of magnetic material in the source. Magnetite is the most common magnetic mineral. Other minerals such as ilmenite, pyrrhotite, franklinite, chromite, hematite, arsenopyrite, limonite and pyrite are also magnetic, but to a lesser extent than magnetite on average.

In some geological environments, an EM anomaly with magnetic correlation has a greater likelihood of being produced by sulphides than one which is non-magnetic. However, sulphide ore bodies may be non-magnetic (e.g., the Kidd Creek deposit near Timmins, Canada) as well as magnetic (e.g., the Mattabi deposit near Sturgeon Lake, Canada).

Iron ore deposits will be anomalously magnetic in comparison to surrounding rock due to the concentration of iron minerals such as magnetite, ilmenite and hematite.

Changes in magnetic susceptibility often allow rock units to be differentiated based on the total field magnetic response. Geophysical classifications may differ from geological classifications if various magnetite levels exist within one general geological classification. Geometric considerations of the source such as shape, dip and depth, inclination of the earth's field and remanent magnetization will complicate such an analysis.

In general, mafic lithologies contain more magnetite and are therefore more magnetic than many sediments which tend to be weakly magnetic. Metamorphism and alteration can also increase or decrease the magnetization of a rock unit.

-AppendixC.14 -

Textural differences on a total field magnetic contour, colour or shadow map due to the frequency of activity of the magnetic parameter resulting from inhomogeneities in the distribution of magnetite within the rock, may define certain lithologies. For example, near surface volcanics may display highly complex contour patterns with little line-to-line correlation.

Rock units may be differentiated based on the plan shapes of their total field magnetic responses. Mafic intrusive plugs can appear as isolated "bulls-eye" anomalies. Granitic intrusives appear as sub-circular zones, and may have contrasting rings due to contact metamorphism. Generally, granitic terrain will lack a pronounced strike direction, although granite gneiSS may display strike.

Linear north-south units are theoretically not well-defined on total field magnetic maps in equatorial regions due to the low inclination of the earth's magnetic field. However, most stratigraphic units will have variations in composition along strike that will cause the units to appear as a series of alternating magnetic highs and lows.

Faults and shear zones may be characterized by alteration that causes destruction of magnetite (e.g., weathering) that produces a contrast with surrounding rock, Structural breaks may be filled by magnetite-rich, fracture filling material as is the case with diabase dikes, or by non-magnetic felsic material.

Faulting can also be identified by patterns in the magnetic total field contours or colours. Faults and dikes tend to appear as lineaments and often have strike lengths of several kilometres. Offsets in narrow, magnetic, stratigraphic trends also delineate structure. Sharp contrasts in magnetic lithologies may arise due to large displacements along strike­slip or dip-slip faults.

Gamma Ray Spectrometry

Radioelement concentrations are measures of the abundance of radioactive elements in the rock. The original abundance of the radioelements in any rock can be altered by the subsequent processes of metamorphism and weathering.

Gamma radiation in the range that is measured in the thorium, potassium, uranium and total count windows is strongly attenuated by rock, overburden and water. Almost all of the total radiation measured from rock and overburden originates in the upper .5 metres. Moisture in soil and bodies of water will mask the radioactivity from underlying rock. Weathered rock materials that have been displaced by glacial, water or wind action will not reflect the general composition of the underlying bedrock. Where residual soils exist, they may reflect the composition of underlying rock except where equilibrium does not exist between the original radioelement and the products in its decay series.

Radioelement counts (expressed as counts per second) are the rates of detection of the gamma radiation from specific decaying particles corresponding to products in each

- Appendix C.15 -

radioelements decay series. The radiation source for uranium is bismuth (Bi-214), for thorium it is thallium (TI-208) and for potassium it is potassium (K-40).

The uranium and thorium radioelement concentrations are dependent on a state of equilibrium between the parent and daughter products in the decay series. Some daughter products in the uranium decay are long lived and could be removed by processes such as leaching. One product in the series, radon (Rn-222), is a gas which can easily escape. Both of these factors can affect the degree to which the calculated uranium concentrations reflect the actual composition of the source rock. Because the daughter products of thorium are relatively short lived, there is more likelihood that the thorium decay series is in equilibrium.

Lithological discrimination can be based on the measured relative concentrations and total, combined, radioactivity of the radioelements. Feldspar and mica contain potassium. Zircon, sphene and apatite are accessory minerals in igneous rocks that are sources of uranium and thorium. Monazite, thorianite, thorite, uraninite and uranothorite are also sources of uranium and thorium which are found in granites and pegmatites.

In general, the abundance of uranium, thorium and potassium in igneous rock increases with acidity. Pegmatites commonly have elevated concentrations of uranium relative to thorium. Sedimentary rocks derived from igneous rocks may have characteristic signatures that are influenced by their parent rocks, but these will have been altered by subsequent weathering and alteration.

Metamorphism and alteration will cause variations in the abundance of certain radioelements relative to each other. For example, alterative processes may cause uranium enrichment to the extent that a rock will be of economic interest. Uranium anomalies are more likely to be economically significant if they consist of an increase in the uranium relative to thorium and potassium, rather than a sympathetic increase in all three radioelements.

Faults can exhibit radioactive highs due to increased permeability which allows radon migration, or as lows due to structural control of drainage and fluvial sediments which attenuate gamma radiation from the underlying rocks. Faults can also be recognized by sharp contrasts in radiometric lithologies due to large strike-slip or dip-slip displacements. Changes in relative radioelement concentrations due to alteration will also define faults.

Similar to magnetics, certain rock types can be identified by their plan shapes if they also produce a radiometric contrast with surrounding rock. For example, granite intrusions will appear as sub-circular bodies, and may display concentric zonations. They will tend to lack a prominent strike direction. Offsets of narrow, continuous, stratigraphic units with contrasting radiometric signatures can identify faulting, and folding of stratigraphic trends will also be apparent.

APPENDIX C

DATA ARCHIVE DESCRIPTION

APPENDIX D

ARCHIVE DESCRIPTION

This CD-ROM contains final data archives of an airborne survey conducted by Fugro Airborne Surveys on behalf of Trade Winds Ventures Inc. in the Birch Lake area, Ontario from April 6th to April t h

, 2005.

Fugro Job #05006

The archives contain three (3) directories.

1. XYZ: XYZ data in Geosoft format, along with format description.

2. Grids: Grids in Geosoft format for the following parameters: 1. Magnetic Total Field 2. 56000 Hz Apparent Resistivity 3. 7200 Hz Apparent Resistivity 4. 900 Hz Apparent Resistivity 5. Calculated Vertical Magnetic Gradient 6. EM Anomalies

3. Report in MS-Word, Version 6.0 and Adobe PDF format

Projection Description:

Datum: Ellipsoid: Projection: Central Meridian: False Northing: False Easting: Scale Factor: WGS84-Local Conversion: Datum Shifts:

NAD83 GRS80 UTM (Zone: 15 ) 93°W o 500000 0.9996 Molodensky DX: 0 DY: 0 DZ: 0

APPENDIX D

EM ANOMALY LIST

EM Anomaly List

CX 5500 HZ CP 7200 HZ CP 900 HZ I Vertical Dike Mag. Corr I I Label Fid Interp XUTM YUTM Real Quad Real Quad Real Quad I COND DEPTH* I m m ppm ppm ppm ppm ppm ppm I siemens m NT

I LINE 10010 FLIGHT 5 IA 4303.9 S 547666 5698863 1.0 5.0 26.7 74.1 10.5 10.1 0 IB 4338.2 S 548329 5699541 0.2 2.5 86.2 202.4 3.4 28.9 0

ILINE 10020 FLIGHT 5 IA 4191.6 S 548241 5699372 3.6 6.8 61. 7 101.8 7.2 17.4 0.5 25 0

I LINE 10030 FLIGHT 5 IA 3891.7 S 548268 5699331 4.8 11.1 79.6 129.7 0.9 20.5 0.4 12 0

ILINE 10040 FLIGHT 5 IA 3750.0 S 548334 5699328 3.8 8.7 77.1 147.4 2.4 24.0 0.4 17 155 IB 3722.7 S? 548922 5699904 0.0 8.6 22.6 44.0 28.3 5.1 2240

ILINE 10050 FLIGHT 5 ;A 3584.0 S 547760 5698668 3.2 2.7 7.2 85.6 4.8 9.3 1065 IB 3611. 5 S 548339 5699261 7.9 33.6 72.9 245.6 0.9 33.9 0.3 0 253 IC 3644.0 S 549005 5699918 0.0 9.5 21. 9 106.3 29.5 12.6 1916

LINE 10060 FLIGHT 5 A 3500.0 S 547798 5698652 3.8 9.4 16.9 95.8 0.9 14.0 0.4 14 866 B 3475.4 S? 548347 5699199 9.4 28.4 49.9 191.8 1.3 26.5 0.4 0 0 C 3472.4 S 548412 5699268 3.3 13.8 49.2 191.8 1.5 26.5 0.2 0 107 D 3442.0 S 549062 5699911 2.6 8.7 9.3 94.2 5.1 11.8 2574

LINE 10070 FJ.TGHT 5 A 3310.9 S 547902 5698677 0.0 10.9 25.8 113.7 8.5 15.0 0 B 3346.8 S 548602 5699378 0.0 8.5 48.2 175.3 2.9 25.8 0 C 3372.0 S 549135 5699911 0.0 11.8 54.9 66.5 62.9 7.4 1783

------ - - --

,LINE 10080 FLIGHT 5 I IA 3227.8 S 547836 5698548 I 3.3 7.2 29.3 116.6 25.6 16.1 0.4 24 0 IB 3188.1 S 548592 5699304 I 6.8 10.7 71. 6 116.7 1.4 23.8 0.7 20 176

- - --ILINE 10090 FLIGHT 5 I IA 2995.0 5 547880 5698520 i 0.5 3.3 28.1 114.5 10.1 15.8 257 IB 3033.5 S 548670 5699317 I 5.4 5.7 100.3 138.0 3.5 29.3 1.0 34 385

CX COAXIAL *Estimated Depth may be unreliable because the CP COPLANAR Note:EM values shown above stronger part of the conductor may be deeper or

are local amplitudes to one side of the flight line l or because of a 05006 1 - shallow dip or magnetite/overburden effects

iLabel !

ILINE IA i B Ic ID

LINE A B C D

LINE A B C

LINE A B C D

LINE A B c

Fid

10100 2847.9 2820.0 2810.1 2774.9

10110 8961.4 8990.0 9001.1 9037.4

10120 8858.2 8830.0 8818.8

10130 8559.9 8564.3 8589.0 8601.6

10140 8484.0 8458.0 8452.7

LINE 10150 A 8268.0 B 8294.0 C 8298.7 D 8323.9

LINE A B C

10160 8183.6 8156.5 8148.1

CX COAXIAL CP COPLANAR

05006

Interp XUTM m

YUTM m

CX 5500 HZ Real Quad

ppm ppm

S S?

S S

S S?

S S?

S S?

S

S E

S? S

S S? s

S S?

S S?

S S?

S

FLIGHT 5 547936 548530 548749 549471

FLIGHT 4 547987 548552 548795 549526

FLIGHT 4 548012 548546 548762

FLIGHT 4 548062 548151 548649 548913

FLIGHT 4 548153 548653 548768

5698504 5699096 5699309 5700043

5698481 5699047 5699294 5700014

5698452 5698963 5699186

5698436 5698526 5699000 5699273

5698437 5698947 5699049

FLIGHT 548212 548705 548807 549347

4 5698439 5698929 5699021 5699553

FLIGHT 4 548244 548742 548896

5698379 5698880 5699036

3.1 9.0 4.7 4.3

2.4 7.5 5.3

13 .6

4.6 3.9 8.7

4.0 0.0

10.7 5.0

4.2 10.3

4.3

11.5 18.8

3.6 3.9

6.2 19.5 6.8

Note:EM values shown above are local amplitudes

13.5 13.8 17.3 5.8

6.5 29.6

7.4 8.0

16.3 23.7 15.0

15.9 30.3 28.6

8.1

26.1 27.0 6.2

17.9 42.2 14.5 21. 6

25.7 43.0 11.5

EM Anomaly List

CP Real

ppm

41.5 44.8

130.9 75.1

44.5 1.1

143.1 76.9

67.2 6.6

106.9

51. 4 23.0 85.0 84.2

57.9 86.5 59.2

52.1 15.6

155.3 17.9

52.7 127.4

68.4

7200 HZ Quad ppm

185.9 171.8 186.0

29.5

219.8 208.4 205.5 57.7

234.4 186.6 137.8

233.0 233.0 227.3 115.4

295.8 245.1 43.5

316.6 335.8 351.4 103.2

249.5 312.2

83.1

2

CP Real

ppm

39.4 1.7 1.3

77.9

17.0 0.2 4.3

81.2

49.9 8.5

10.7

13.9 63.7 7.5

17.7

59.1 0.0

1S.6

0.0 1.0 8.1 0.2

0.0 0.3 1.7

900 HZ Quad ppm

25.2 26.2 35.0

5.5

27.5 29.0 36.8 6.8

31. 0 25.9 28.1

31.0 31. 0 30.5 22.0

39.8 37.1 U.5

42.7 50.1 55.5 13 .4

33.6 48.0 16.7

Vertical Dike COND DEPTH*

siemens m

0.2 0.8 0.3

0.3 0.7

0.3 0.2 0.7

0.3

0.5 0.6

0.2 0.5 0.6

O.S 0.7 0.3 0.2

0.3 0.7 0.6

o 12 o

o 28

o o

10

o

o 23

o o

28

10 o 2 o

o o

16

Mag. Corr

NT

o o o o

o 238

o o

o o o

o o

117 o

5080 o o

4426 o o

59

2327

o o

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the flight line, or because of a shallow dip or magnetite/overburden effects

I I Label Fid I LINE A

B C

10170 7935.0 7961.3 7970.0

LINE 10181 A 4610.4 B 4584.0 C 4574.8 D 4557.9

I LINE 10190 A 74.7 B 7441.0 C 7452.4 D 7463.7 E 7472.0

LINE A B C

D E

iLINE :A

B C D

E

.LINE IA IB Ic

10200 7292.7 7264.1 7254.5 7240.9 7238.4

10210 7030.0 7070.6 7083.1 7090.7 7097.0

10220 6924.0 6896.4 6885.6

CX COAXIAL CP COPLANAR

05006

EM Anomaly List

CX 5500 HZ CP Real

ppm

7200 HZ Quad ppm

Interp XUTM m

YUTM m

Real ppm

S S?

S

S S?

S S

S S?

S S?

S

s s s s s

s S

L? L?

s s s

FLIGHT 548294 548788 548957

4 5698369 5698857 5699034

FLIGHT 5 548334 5698343 548832 5698828 549009 5699010 549353 5699354

FLIGHT 4 548363 5698298 548868 5698808 549063 5699003 549270 5699202 549424 5699356

FLIGHT 4 548379 5698232 548942 549144 549411 549459

5698814 5699002 5699280 5699325

FLIGHT 4 548227 548993 549234 549384 549514

FLIGHT 548420 549028 549271

5698024 5698789 5699025 5699166 5699288

4 5698135 5698738 5698985

8.5 12.4

7.2

7.7 13 .1 4.0 1.7

8.9 18.5 8.0 7.6 1.7

11.0 13.4

4.6 4.2 5.1

0.3 9.5 6.2 4.4 4.8

21.3 8.9 8.1

Note:EM values shown above are local amplitudes

Quad ppm

18.1 41.3

7.4

69.7 6.8

120.5

312.4 34.1

338.1

40.3 79.0 356.0 37.4 113.5 298.6 4.9 111.2 148.2 8.6 36.9 178.8

18.2 58.9 8.7

17.6 3.1

18.0 29.7 11.0 24.2 24.2

1.8 33.2 12.1 23.5 10.6

16.2 20.1 14.6

40.7 229.2 87.7 323.9 91.4 106.8 2.5 23.8

27.0 160.1

57.2 54.5 69.2 20.8 20.8

11.0 44.0 61.3 39.5 18.1

147.7 32.6 57.4

234.1 246.9 149.7 185.9 185.9

4:'.:' 226.8 137.8 131.6

56.2

251. 6 197.8 133.8

3 -

CP Real

ppm

0.0 0.1 2.2

0.0 1.9 3.6 0.5

8.6 0.7 4.1 4.2 2.8

29.5 4.6 4.2 0.0 6.6

5.2 4.4 6.4

18.3 10.3

144.4 7.2 5.8

900 HZ Quad ppm

42.5 4.7

29.8

48.5 43.4 27.8 24.3

30.6 45.4 22.2 10.8 22.4

30.8 33.7 21.5 24.3 24.3

6.0 30.6 20.3 18.9

5.0

31.6 26.5 20.8

Vertical Dike COND DEPTH*

siemens m

0.6 0.4 1.1

0.3 0.5 0.7

0.6 0.5 1.1 0.5

0.8 0.6 0.4 0.2 0.2

0.4 0.5 0.2 0.5

2.2 0.5 0.6

6 o

29

o o

38

7 o

27 7

12 1

14 o o

o 15

o 11

19 5

n

Mag. Corr

NT

1702 o o

1588 o

171 o

2487 o

138 o o

o o o o o

o o o

23 o

o o o

*Estimated Depth be unreliable because the stronger part of conductor may be deeper or to one side of the flight line, or because of a shallow or magnetite/overburden effects

I I Label Fid

LINE 10230 A 6670.0 B 6707.0 C 6718.0 D 6730.1

LINE 10240 A 6268.0 B 6226.4 C 6209.8 D 6168.4

LINE 10251 A 4744.5 B 4819.6 C 4842.0 D 4873.0

LINE 10260 A 5909.1 B 5874.0 C 5847.2 D 5816.0

LINE 10270 A 5477.3 B 5512.0 C 5538.9 D 5573.2

LINE 10280 A 5398.2 E 5332.8 C 5297.6

ILINE IA IE

10290 5124.4 5162.7

CX COAXIAL CP COPLANAR

05006

Interp XUTM m

YUTM m

CX Real

ppm

5500 HZ Quad ppm

s s S

L?

s s s s

s s s s

s s s s

s s s s

s s s

S S?

FLIGHT 4 548217 5697869 549069 5698723 549328 5698988 549609 5699268

FLIGHT 4 548192 5697774 549048 5698634 549410 550253

FLIGHT 5

5698977 5699832

548181 5697697 549428 5698951 549802 5699319 550303 5699818

FLIGHT 4 548177 5697609 548967 5698399 549581 5699013 550332 5699770

FLIGHT 4 548201 5697570 548968 5698338 549596 5698957 550372 5699730

FLIGHT 4 548237 5697527 549666 5698954 550414 5699708

FLIGHT 4 548458 5697688 549344 5698579

2.5 4.6 7.4 4.8

3.1 6.0 2.6 8.5

6.3 4.5 5.1 5.9

7.2 1.9 4.5 8.0

7.8 0.6 4.5

12.3

0.0 3.1

10.0

0.5 4.2

Note:EM values shown above are local amplitudes

6.0 19.9

7.8 8.1

0.3 23.7

8.4 1.0

12.5 6.5 1.7

27.2

14.7 3.5 7.4

28.3

5.6 6.4

13.3 26.9

1.6 2.0

47.6

2.3 29.2

EM Anomaly List

CP Real

ppm

7200 HZ Quad ppm

13.0 20.9 33.8 217.9 56.7 148.9 32.9 48.4

24.8 28.8 22.1 149.1 48.9 128.7 56.0 15.2

50.1 58.9 4.4

31.8

86.5 4.7

66.4 78 9

90.6 2.9

103.1 132.3

58.1 105.3 132.4

33.1 23.6

103.9 126.8

10.0 193.4

164.4 51. 0

133.9 192.5

135.7 39.4

165.3 401.4

51.9 125.2 427.4

44.9 157.7

4 -

CP Real

ppm

2.6 12.9 4.5

19.7

2.7 1.7 1.9

58.0

11.3 1.1 2.5

60.8

2.8 0.9 1.7

32.2

1.3 0.3 2.6 9.5

2.1 3.6

10.0

0.2 0.8

900 HZ I Quad I ppm I

3.1 29.1 21.0 14.9

7.8 19.8 19.0 1.7

17.2 19.1

1.3 25.4

27.2 6.4

23.0 26.8

23.4 4.1

28.3 54.9

9.8 23.8 58.9

8.1 20.5

Vertical Dike CONi) DEPTH*

siemens m

0.3 1.1 0.6

0.3

0.5 0.7

0.3

0.6

0.6 0.4

1.7

0.3 0.6

0.3

0.2

o 30 27

o

15 31

o

11

25 o

36

7 o

o

o

Mag. Corr

NT

o o o o

o o o o

o o o o

o o o o

o o o o

o o o

o o

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the fl line, or because of a shallow dip or magnetite/overburden effects

I I Label I ILINE Ic ID

LINE A B C D

I LINE 'A B C D

LINE A B C D

LINE A B C

:n ,~

[LINE IA IB IC ID

LINE A B C D

Fid

10290 5177.0 5210.6

10300 5040.8 5017.0 4985.3 4952.9

10310 4782.1 4808.0 4836.9 4866.2

10320 4675.0 4658.0 4641.0 4608.5

10330 4430.0 4470.0 4486.9 4518.0

10340 4194.0 4150.0 4124.2 4096.0

10350 3908.0 3953.0 3976.0 4007.0

CX COAXIAL CP COPLANAR

05006

Interp XUTM m

YUTM m

CX Real

ppm

5500 HZ Quad ppm

s s

s s s s

s s s s

s s s s

s s s s

s s S

S?

s s S

S?

FLIGHT 4 549690 5698915 550449 5699665

FLIGHT 548525 549038 549756 550483

4 5697669 5698204 5698907 5699639

FLIGHT 4 548490 549096 549788 550512

FLIGHT 4 549113 549478 549848 550556

FLIGHT 4 548531 549470 549873 550606

FLIGHT 4 548605 549520 550077 550664

FLIGHT 4

5697585 5698178 5698876 5699607

5698131 5698472 5698863 5699578

5697467 5698419 5698809 5699546

5697469 5698400 5698948 5699534

548571 5697374 549566 5698368 550047 5698841 550730 5699530

3.2 8.2

4.6 0.0 3.8 2.7

2.9 2.9 2.2 9.3

2.1 0.9 2.0 5.5

3.0 0.9 8.1 1.2

4.1 1.6 4.1 4.4

1.6 1.5 2.3 2.4

Note:EM values shown above are locaJ amplitudes

6.4 26.9

8.3 l3 .6 5.5

20.6

3.3 8.4 4.9

11.8

5.9 15.7 3.7

11. 9

3.3 7.9 7.6 2.3

1.8 14.7 3.1 5.5

8.3 21. 5 3.7 3.8

EM Anomaly J~ist

CP Real

ppm

122.5 l31.1

45.1 12.6

115.8 110.7

31.0 11. 2

114.9 59.7

13.7 14.3

105.5 17.2

24.1 17.5 90.9 9.9

29.8 19.2 50.9 12.0

19.1 15.2 75.4 14.3

7200 HZ Quad ppm

125.1 438.9

71.6 139.8 116.7 393.0

46.3 87.3 77.6

220.5

36.6 107.1 39.9

114.4

50.1 149.6 117.3 23.8

38.0 181.5

40.3 19.0

47.2 172.4 18.2 20.3

5 -

CP Real

ppm

3.7 3.5

2.5 5.3 3.7 2.0

0.2 3.8 5.2 2.3

l3 .1 3.4 3.7 4.8

0.9 0.5

10.9 2.5

1.8 0.8 3.3 2.2

0.5 1.3 2.8 2.7

900 HZ Quad ppm

27.2 60.6

l3.4 17.7 23.8 53.7

8.5 11.2 20.6 31.1

5.1 14.3 20.2 17.1

8.6 18.7 14.5

::>.4

5.1 23.4 13.3 3.6

7.3 21.9 12.8 6.0

Vertical Dike COND DEPTH*

siemens m

0.4 0.4

0.5

0.6

0.9

0.5

1.3

1.3 0.8

24 o

21

34

15

8

27

52 29

Mag. Corr

NT

o o

o o o o

o o o o

o o o o

o o o

23

o o o

32

o o o

10

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the flight line, or because of a shallow dip or magnetite/overburden effects

EM Anomaly List

I CX 5500 HZ CP 7200 HZ CP 900 HZ Vertical Dike I Mag. Corr I Label Fid Intcrp XUTM YUTM Real Quad Real Quad Real Quad CONO OEPTH*

m m ppm ppm ppm ppm ppm ppm siemens m NT

LINE 10360 FLIGHT 4 A 3819.9 S7 549046 5697777 31.2 10.1 243.3 59.4 262.0 9.2 0 B 3793.0 S 549622 5698346 1.4 11.5 9.3 145.9 3.6 18.8 0 C 3770.0 S 550130 5698860 1.3 3.7 82.1 55.8 2.1 15.2 0

LINE 10370 FLIGHT 4 A 3564.0 S 548690 5697345 1.5 0.8 37.6 34.3 1.6 8.8 0 B 3578.6 S 549068 5697727 9.7 7.2 148.8 47.8 135.4 6.5 0 C 3604.0 S 549666 5698325 1.4 9.7 3.6 91. 0 0.0 11.6 0 D 3628.0 S 550210 5698883 2.5 3.2 55.7 33.2 4.4 9.7 0

ILINE 10380 FLIGHT 4 i A 3306.0 S7 549154 5697747 1.6 7.6 234.7 59.5 251.9 3.9 12770 IB 3281.0 S 549691 5698284 0.6 7.2 2.8 55.3 3.0 6.5 0 Ic 3254.0 S 550294 5698876 1.5 0.0 84.4 0.0 4.7 17.5 0

ILINE 10390 FLIGHT 4 IA 3031. 2 S 548677 5697188 5.3 3.0 53.1 42.1 1.4 11.9 0 i B 3053.0 S7 549194 5697699 21.3 7.8 205.2 63.9 221. 3 3.8 0 Ic 3079.0 S 549760 5698273 3.6 5.9 2.8 29.4 0.4 3.6 0.5 30 0 10 3105.0 S 550320 5698841 2.0 3.6 46.5 0.0 3.1 12.9 0

LINE 10400 FLIGHT 4 A 2962.5 S 548770 5697219 1.8 4.0 59.5 56.2 2.2 14.0 0 B 2944.1 S 549225 5697662 9.4 11.5 111.5 83.5 117.4 8.7 0 C 2919.1 S 549803 5698239 3.4 6.9 2.7 12.9 1.2 1.8 0 D 2887.9 S 550486 5698931 6.3 3.9 78.1 88.3 4.7 18.8 1.9 45 0

LINE 10410 FLIGHT 4 A 2675.4 S 548827 5697190 3.3 5.4 32.6 29.3 0.7 8.2 0.5 30 15 B 2720.0 S 549825 5698208 3.4 7.9 2.6 10.3 0.5 1.2 0 C 2751. 6 S 550524 5698910 7.0 5.2 113.1 115.5 3.7 23.6 1.6 37 0

ILINE 10420 FLIGH'r 4 IA 2610.2 S 548903 5697204 3.1 2.9 43.9 48.4 1.7 10.5 0 iB 2568.4 S7 549865 5698160 5.3 7.7 3.5 12.8 0.9 1.5 0.7 13 0

IC 2532.5 S 550610 5698910 6.4 9.8 148.9 176.1 3.9 33.5 0.7 24 0

ex COAXIAl, *Estimated Depth may be unreliable because the CP COPLANAR Note:EM values shown above stronger part of the conductor may be deeper or

are local amplitudes to one side of the flight line, or because of a 05006 6 shallow dip or magnetite/overburden effects

I I Label I

I LINE iA iB Ic

LINE A B C

LINE A B C

Fid

10430 2312.0 2354.3 2385.7

10440 1953.4 1905.0 1868.0

10450 1664.0 1700.0 1735.7

LINE 10460 A 1564.0 B 1535.4 C 1497.4

ILINE 10470 IA 1295.2 IB 1320.3 Ic 1356.4

LINE 10480 A 1182.9 B 1157.9 C 1123.4

ILINE !A IB

C

ILINE IA ,B

10490 11170.6 11145.2 11111.2

10500 10811.0 10840.9

CX COAXIAL CP COPLANAR

05006

CX 5500 HZ Interp XUTM

m YUTM

m Real

ppm

S S?

S

s s s

s s s

s s s

s s s

s s s

s s s

s s

FLIGHT 4 548928 549878 550543

FLIGHT 4 549015 549938 550659

FLIGHT 4 549193 549985 550672

FLIGHT 4

5697168 5698114 5698786

5697171 5698104 5698816

5697280 5698078 5698774

549489 5697505 550022 5698058 550776 5698804

FLIGHT 4 549498 5697452 550066 5698013 550788 5698739

FLIGHT 4 549565 5697445 550117 5698002 550870 5698745

FLIGHT 3 549580 5697389 550178 5697980 550904 5698718

FLIGHT 3 549627 5697370 550212 5697958

3.2 2.6 4.0

3.5 3.1 2.4

0.1 5.7 2.0

2.4 5.4 3.6

3.7 3.4 2.9

3.8 1.4 5.3

9.0 5.1 8.9

6.3 2.2

Note:EM values shown above are local amplitudes

Quad ppm

2.8 8.4 3.8

10.0 14.6 5.1

1.6 19.6 5.4

0.0 29.1 4.8

4.8 14.1

7.0

7.7 20.9 9.7

13 .3 18.0 13 .9

9.5 11.5

EM Anomaly List

CP Real

ppm

37.5 1.9

71.1

32.7 4.6

71.4

4.0 13.6 83.5

7200 HZ Quad ppm

39.0 20.1 32.2

70.9 80.0

119.6

2.7 143.3

80.8

22.4 81.9 23.8 206.3 90.9 79.0

26.2 62.2 25.1 171.7 95.3 122.1

32.1 35.6 73.3

43.7 41.6 71. 5

54.3 51.5

47.2 197.6 135.0

88.1 179.2 184.9

83.7 159.5

7 -

CP Real

ppm

0.8 0.3 3.1

1.2 0.0 2.8

0.7 0.2 2.2

1.3 0.0 2.6

1.1 0.0 2.3

2.'1 0.8 1.4

1.0 1.2 4.5

7.6 1.2

900 HZ Quad ppm

8.3 2.6

15.6

11. 4 10.2 16.2

0.5 18.2 18.3

3.8 26.6 21. 7

8.5 22.3 24.3

7.8 26.2 20.6

13.5 25.0 26.6

13 .2 23.6

Vertical Dike COND Db:PTH*

siemens m

1.0

0.3

0.3

0.4

0.8 0.3 0.8

0.7

45

10

o

18

15 o

14

20

Mag. Corr

NT

o o o

o o o

o o o

80 o o

37 o o

138 10 o

15 17

o

o 21

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the flight line, or because of a shallow dip or magnetite/overburden effects

I I Label Fid I jLlNE 10500 Ic 10880.1

LINE 10510 A 10713.8 B 10700.3 C 10648.7

LINE A B C

ID

LINE A B C D

ILINE IA IB i C ID

ILINE IA

IB IC ID

LINE A B C D

10520 10431.3 10450.4 10470.5 10510.0

10530 10328.3 10312.1 10295.4 10250.0

10540 9911.8 9928.9 9945.1 9992.3

10550 9823.6 9810.4 9790.0 9740.0

10560 9522.9 9560.8 9610.5 9642.0

CX COAXIAl. CP COPLANAR

05006

CX 5500 HZ Interp XUTM

m YUTM

m Real

ppm Quad ppm

s

s s s

s S

S? S

s s s s

s s s s

s s s s

s s s s

FLIGHT 3 550957 5698697

FLIGHT 3 549688 5697333 549989 5697658 551074 5698744

FLIGHT 3 549702 550085 550441 551166

FLIGHT 3 549768 550091 550405 551268

FLIGHT 3 549797 550142 550463 551330

FLIGHT 3 549756 550046 550492 551431

FLIGHT 3 549784 550512 551417 551953

5697311 5697672 5698057 5698766

5697288 5697617 5697944 5698791

5697265 5697607 5697924 5698794

5697152 5697449 5697866 5698813

5697109 5697834 5698730 5699260

3.9

4.7 8.7 1.6

12.8 3.9 4.1 2.1

6.6 3.8 7.4 4.8

3.1 2.7 2.6 1.7

6.9 2.4 5.4 2.3

11.2 5.5 4.3 4.6

Note:EM values shown above are local amplitudes

5.6

8.3 11. 0 4.7

8.8 8.3

21.6 2.2

9.5 13.8 25.7

1.0

5.7 10.2

8.0 8.7

9.4 19.0 20.4

0.1

11.7 21.5 11. 7

7.7

EM Anomaly List

CP Real

ppm

7200 HZ Quad ppm

55.4 144.7

62.7 84.9 31.5 85.1 24.1 123.7

75.7 51.1 25.5 24.8

71.5 55.0 99.5 15.0

55.4 21.5 86.0 25.3

42.8 16.0 87.0 19.7

46.9 84.2 44.0 5.0

121.8 108.7 164.3

28.2

124.3 128.8 327.2

75.5

76.4 64.7

273.6 45.3

96.5 43.5

290.9 95.4

92.5 263.4

88.7 63.9

8

CP Real

ppm

6 2

8.5 0.4 1.4

4.9 2.2 0.6 1.8

2.4 3.0 0.3 2.0

2.5 2.5 1.8 1.8

2.6 0.8 1.0 0.4

12.7 2.1 4.2 0.3

900 HZ Quad ppm

20.4

13.7 11.8 15.4

20.6 16.1 22.0 2.2

20.1 19.2 46.9

9.1

13.8 8.4

39.1 8.1

14.4 6.2

41.3 19.5

14.1 37.2 14.3 8.2

Vertical Dike COND DEPTH*

siemens m

0.6

0.5 0.9

2.2 0.4 0.2

0.7 0.3 0.4

0.5

0.8

0.3

1.3 0.3 0.4 0.6

31

21 21

26 19 o

22 2 o

26

21

o

19 o

12 20

Mag. Corr

NT

o

o o o

o o o o

o o o o

62 o o o

o o o o

o 46

o o

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the flight line, or because of a shallow dip or magnetite/overburden effects

i I Label

LINE A B C

LINE A B C o

iLINE IA !B

IC 10

I LINE IA i B Ic ID

Fid

10570 9440.9 9405.5 9355.0

10580 9115.2 9143.0 9158.7 9218.5

10590 9027.2 9000.0 8989.4 8950.0

10600 8632.3 8657.0 8671.1 871 7.8

LINE 10610 A 8540.7 B 8502.9 C 8453.0

LINE 10620 A 8251. 5 B 8290.0 C 8322.2 D 8343.0

'LINE IA iB ic

10630 8176.4 8136.0 8108.4

CX COAXIAL CP COPLANAR

05006

EM Anomaly List

CP 7200 HZ Interp XUTM

m YUTM

m

CX Real

ppm

5500 HZ Quad ppm

Real ppm

Quad ppm

s s s

s s s s

s s s s

s s s s

s s s

s S

S? S

s S

S?

FLIGHT 3 549833 550574 551426

FLIGHT 3 549890 550430 550653 551561

FLIGHT 3 549922 550489 550699 551603

FLIGHT 3 549978 550493 550752 551648

FLIGHT 3

5697079 5697809 5698672

5697076 5697575 5697811 5698748

5697029 5697575 5697805 5698690

5697006 5697532 5697781 5698672

550039 5697000 550814 5697776 551827 5698777

FLIGHT 3 550051 5696961 550910 5697793 551533 5698435 551998 5698860

FLIGHT 3 550086 5696916 550965 5697776 551614 5698437

6.5 5.8 5.3

11.5 3.0 9.6 2.7

7.2 3.8 8.2 3.2

10.7 4.2 3.4 3.6

6.1 5.6 6.5

10.6 4.8 7.3 7.9

5.8 8.5 2.0

Note:EM values shown above are local amplitudes

11.8 29.9 3.5

15.3 18.6 20.9 5.7

7.5 8.9

21.4 2.7

6.5 12.5 23.7

9.5

46.5 89.6 40.0

54.1 9.9

98.8 36.5

51. 9 3.6

62.9 37.9

55.7 5.0

60.3 58.2

78.2 336.9

73.3

106.9 98.4

346.1 50.3

86.6 81. 0

243.9 69.2

109.5 43.1

303.1 80.2

12.0 67.2 144.7 13.8 27.6 160.0 9.7 113.1 145.6

7.5 69.0 174.9 13.7 12.5 131.3 21.2 34.5 157.8 12.7 182.6 352.9

8.3 10.9 12.0

72 .4 5.6

29.1

205.7 76.9 81.8

9

CP Real

ppm

8.9 0.9 5.2

7.4 3.4 2.2 2.0

11. 5 0.7 1.9 1.0

0.0 2.2 3.5 1.9

1.8 1.4 1.8

3.1 0.8

21.5 2.8

2.0 1.1 2.4

900 HZ I Quad i ppm I

12.4 47.2 11. 7

15.5 12.8 48.8 10.8

14.4 10.6 34.3 11.1

17.1 5.6

40.6 14.6

22.8 21.1 32.4

26.9 16.7 20.8 57.0

30.0 10.4 11.7

Vertical Dike COND DEPTH*

siemens m

0.6 0.2 1.7

1.0 0.2 0.6

1.1 0.4 0.5

2.4 0.3 0.2 0.4

0.5 0.4 0.7

1.9 0.4 0.4 0.7

0.7 0.9

12 o

46

13 o 8

29 10 o

32 1 o

13

15 6

21

29 5 1

18

25 15

Mag. Corr

NT

o 31 o

o o o o

o o o o

15 o o o

o o o

18 o o o

15 o o

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the flight line, or because of a shallow dip or magnetite/overburden effects

I I Label Fid I ILINE 10630 ID 8091.9

LINE 10640 A 7804.6 B 7819.2 C 7849.0

jD 7880.3 !E 7899.6

LINE 10650 A 7573.6 B 7553.5 C 7518.0 D 7462.9

LINE 10660 A 7277.4 B 7294.0 C 7327.0 D 7380.1

LINE 10670 A 7222.4 B 7198.0 C 7184.0 D 7164.8 E 7114.0 F 7094.0

LINE 10680 A 6946.0 B 6958.0 C 6980.0 D 7009.2

IE 7033.8 IF 7048.5

CX COAXIAL CP COPLANAR

05006

EM Anomaly List

CX 5500 HZ CP Real

ppm

7200 HZ Quad ppm

Interp XUTM m

YUTM m

Real ppm

S

S 57

S 57

S

S B7

S S

S B S S

S 57

S S S S

S 5

S7 5 5 S

FLIGHT 3 552033 5698852

FLIGHT 3 550131 5696876 550428 5697184 551039 5697781 551671 5698416 552083 5698829

FLIGHT 3 550027 5696710 550423 5697110 551091 5697772 552165 5698837

FLIGHT 3 550151 5696758 550490 5697112 551142 5697741 552177 5698774

FLIGHT 3 550114 5696654 550580 5697128 550852 5697388 ::;::)1211 5697744 552213 5698743 552507 5699068

FLIGHT 3 550660 5697113 550869 5697333 551259 5697717 551778 5698249 552244 5698708 552563 5699025

7.7

6.4 5.0 3.6 2.8 5.9

2.7 2.8 7.3 6.6

0.4 5.0 7.0 2.6

10.5 5.0 4.2 5.4 3.6 4.5

6.2 2.3 9.5 3.7 6.3 3.8

Note:EM values shown above are local amplitudes

Quad ppm

16.9 161.6 286.0

5.8 70.1 204.9 14.9 4.8 54.8 14.1 5.4 90.6

9.1 20.3 54.0 10.3 151.2 275.5

1.3 12.0 10.9 11.3 13.6 52.1 19.4 9.5 128.1 13.0 93.4 240.7

8.3 13.9 28.1 8.9

9.3 12.0

1.4 24.9

4.3 10.1

13 .4 19.4 22.0 17.6 24.6 14.6

63.2 13.8 11.9

113.7

46.3 4.3 2.3

15.3 41.5 20.1

3.9 9.4

28.1 30.2 42.7 51.4

89.5 61.2

169.6 289.5

52.2 42.1 29.7

159.6 64.0

143.3

70.6 142.7 190.1

86.1 166.3 125.6

10 -

CP Real

ppm

4.2

0.3 0.6 0.6

14.6 5.4

2.5 6.4 0.9 5.8

2.0 6.1 0.0

11. 3

1.7 3.0 0.4 1.7 4.2 2.2

0.8 0.5 6.4

29.9 0.0 0.0

900 HZ Quad ppm

50.1

31.0 7.2

11. 5 6.8

45.3

4.2 8.8

16.1 32.0

19.5 9.7

21.8 43.2

11.5 5.7 3.4

21.0 13.4 18.4

9.7 18.8 28.1 10.5 24.6 18.1

Vertical Dike COND DEP'l'H*

siemens m

0.5

1.2 0.4 0.3

0.6

0.5 0.5

0.4 0.3

1.5 0.4

0.3 0.7 0.4

0.5

0.5 0.2 0.3 0.3

5

35 o o

18

o 12

o o

25 o

o 39 17

5

5 o o o

Mag. Corr

NT

o

23 41

o o o

o 32

o o

o o o o

o o

32 o o o

o 33 o o o o

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the flight line, or because of a shallow dip or magnetite/overburden effects

iLabel I LINE A B C D E F G

LINE A B C D E F G

LINE A B C D E F

LINE A B C D E F

ILINE IA i B Ic

Fid

10690 6845.0 6832.0 6811.7 6783.0 6777.7 6759.7 6741.2

10700 6570.0 6589.8 6603.0 6620.4 6637.0 6653.5 6685.2

10710 6334.0 6324.0 6283.0 6260.2 6251.9 6221.3

10720 6056.0 6075.3 6091.7 6110.0 6142.0 6169.8

10730 5992.0 5974.8 5936.8

CX COAXIAL CP COPLANAR

05006

Interp XUTM m

YUTM m

CX Real

ppm

5500 HZ Quad ppm

s S

S·? S S S S

s s S

S")

S S S

S S S

S? S S

S S

S? S S S

S S S

FLIGHT 3 550679 550929 551306 551845 551951 552293 552623

FLIGHT 3 550271 550720 550996 551345 551672 551996 552645

FLIGHT 3 550391 550605 551473 551943 552120 552742

FLIGHT 3 550417 550817 551157 551530 552227 552802

5697076 5697329 5697707 5698240 5698343 5698704 5699032

5696600 5697038 5697325 5697672 5697996 5698319 5698968

5696639 5696847 5697724 5698198 5698376 5699000

5696604 5696999 5697344 5697719 5698416 5698992

FLIGHT 550514 550880 551610

3 5696639 5696984 5697710

2.8 2.0 4.5 7.8 B.7 3.7 6.8

1.6 6.2 3.2 5.8 1.7

10.1 6.5

2.8 3.4 3.5 5.5 1.3 5.9

2.6 4.1 5.1 5.2 6.7 6.0

3.7 0.9 8.7

Note:EM values shown above are local amplitudes

19.6 13.9 18.2 17.4 32.B 10.0 16.3

3.2 21. 8 15.8 14.2 11.4 16.3 10.3

3.5 0.3

23.0 18.1 0.0

17.2

1.7 24.6 10.6 25.1 3.0 7.4

5.1 8.7

27.2

EM Anomaly List

CP Real

ppm

13.3 10.2 25.B 65.5 73.5 21.3 75.2

18.6 20.4 6.7

14.7 4.7

22.5 59.7

20.1 1.8 9.2

23.3 29.1 79.6

16.4 29.0 1.7

12.5 40.8 45.9

1B.9 35.7 30.5

7200 HZ Quad ppm

103.8 127.6 177.7 164.9 216.8

B1.5 172.7

28.1 155.7 154.4 100.7

91.4 151.9

83.1

118.6 2.9

153.6 117.1

55.1 169.4

120.3 183.3

20.1 127.0

81. 3 66.8

55.6 186.3 235.1

11 -

CP Real

ppm

1.5 0.0 7.3

90.9 61.0 1.4 0.6

1.2 1.0 0.0 3.2 1.7

16.7 1.3

1.1 0.9 0.6

10.7 11. 9 2.0

0.7 O.B 0.2 1.3

27.9 2.9

1.0 3.8 1.2

900 HZ I Quad ! ppm I

13.4 16.3 26.3 13.7 26.7 11.5 26.2

5.3 21.2 19.6 14.0 11.1 21.2 13.8

16.6 0.3

19.2 15.5

8.8 26.4

16.6 24.8

2.7 16.4 10.4 10.8

4.9 24.1 30.0

Vertical Dike COND DEPTH*

siemens m

0.3 0.5

0.4 0.5

0.3 0.2 0.4

0.8 0.7

0.2

0.4

0.2

0.2 3.0 0.8

0.6

0.4

o 3

7 7

o o o

14 1B

o

4

o

o 49 27

36

o

Mag. Corr

NT

o o o o

1375 o o

o o o

21 lOB

1055 o

o 47

o 7B3

o o

o o o o o o

o o o

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the flight line, or because of a shallow dip or magnetite/overburden effects

I I Label I

I LINE ID

IE

[LINE IA 'B

C D E

Fid

10730 5897.1 5873.8

10740 5728.0 5729.1 5761.4 5796.0 5816.4

LINE 10750 A 5650.0 B 5632.9 C 5619.0 D 5597.6 E 5560.9 F 5540.3

LINE A B C D E F

LINE A B C D E F

LINE A

B C

10760 5380.0 5395.7 5408.0 5426.3 5457.9 5479.4

10770 5320.1 5298.8 5283.0 5262.2 5230.9 5208.7

10780 4858.0 4876.3 4907.8

CX COAXIAL CP COPLANAR

05006

CX 5500 HZ Interp XUTM

m YUTM

m Real

ppm Quad ppm

s s

s s s s s

s s s s s s

s S

S? S S S

s s s s s s

s s s

FLIGHT 3 552363 552775

FLIGHT 3 550892 550918 551655 552398 552808

FLIGH'r 3

5698474 5698871

5696942 5696969 5697700 5698449 5698845

550607 5696587 551001 5696961 551290 5697260 551709 5697680 552449 5698411 552847 5698812

FLIGHT 3 550651 551054 551356 551754 552421 552888

FLIGHT 3 550647 551101 551419 551817 552431 552931

FLIGHT 3 550703 551137 551839

5696551 5696952 5697245 5697662 5698322 5698787

5696477 5696925 5697248 5697637 5698260 5698771

5696451 5696903 5697611

7.9 18.7 3.8 7.5

2.5 0.0 6.6 5.4 4.6

1.6 7.9 2.8 8.3 1.5 3.5

2.8 2,1 3.1 9.3 7.8

10.6

5.0 7.7 3.4 6.7 8.8 4.1

2.1 4.0 4.3

17.8 4.6

24.2 14.0 11.9

2.5 7.3 5.4

18.8 13.3 12.4

6.7 11.3 3.1

29.3 6.5

14.4

7.3 18.2

8.4 34.4 11.3

5.8

1.3 10.7 27.2

Note:EM values shown above are local amplitudes

EM Anomaly List

CP Real

ppm

18.7 40.8

31.6 31.6 35.9 32.4 53.8

7200 HZ Quad ppm

137.8 187.1

162.0 162.0 223.8 129.5 226.5

13.8 67.9 35.8 166.5 3.8 20.4

47.6 248.2 30.9 198.7 71.0243.4

14.5 35.8

0.6 66.5 95.7 81.6

18.7 42.9 3.6

44.3 97.7 78.2

17.7 29.8 32.3

29.5 180.2 41.7

323.2 155.9 209.4

40.5 193.2 46.3

274.3 186.2 130.2

36.6 137.0 205.6

12

CP Real

ppm

5.6 0.6

1.1 1.1 0.1

17.8 1.2

0.7 2.9 0.3 0.0

43.9 2.7

1.1 3.1 0.5 0.5

59.2 2.7

0.5 5.8 1.2 1.2

52.4 1.4

0.4 4.9 0.3

900 HZ Quad ppm

18.7 26.3

21.4 21.4 28.6 18.2 30.5

3.3 22.6 2.6

32.0 27.0 33.6

5.0 25.0 5.1

42.9 17.9 31.1

6.4 27.1

5.6 35.8 22.3 20.1

5.9 19.5 26.2

Vertical Dike COND DEPTH*

siemens m

0.5 4 0.5 24

0.3 0.4 0.4

1.3

0.5

0.3

0.9 0.4 1.4 0.9

0.7 0.5 0.4 0.3 0.9 0.6

0.4 0.2

o 9

11

29

4

5

45 o

34 16

28 8 7 o

22 33

9 o

Mag. Corr

NT

o o

o o o o o

o o o o o o

o o

16 o o o

o o

19 o o o

o o

84

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the flight line, or because of a shallow dip or magnetite/overburden effects

I ! I,abel

[LINE ID

LINE A B C D E

ILINE IA IB IC ID IE

Fid

10780 4927.4

10790 4810.6 4788.7 4767.0 4757.0 4750.0

10800 4620.0 4640.3 4661.0 4672.0 4688.9

ILINE 10810 IA 4550.8 iB 4504.0

ILINE 10820 IA 4382.4 IB 4419.0

ILINE 10830 IA 4297.2 IB 4251.0

ILINE 10840 ,A 4117.2 IB 4157.0 Ie 4173.3

I LINE 10850 fA 4032.8 iB 3971.0 IC 3967.1

CX COAXIAL CP .= COPLANAR

05006

CX 5500 HZ Interp XUTM YUTM Real

ppm Quad ppm

S?

s S

B? S S

s S

B? S

S?

s s

s s

s s

s s s

S S?

S

m m

FLIGHT 3 552276 5698024 14.4 4.0

FLIGHT 3 550757 551231 551685 551885 552027

FLIGHT 3 550816 551265 551736 551994 552358

FLIGHT 3

5696445 5696919 5697374 5697574 5697719

5696433 5696884 5697360 5697621 5697974

551073 5696630 552017 5697559

FLIGHT 3 551150 5696626 552037 5697522

FLIGHT 3 551225 5696622 552089 5697514

FI,IGHT 3 551263 5696593 552142 5697486 552500 5697842

FLIGHT 3 551305 5696578 552489 5697740 552564 5697818

i

4.1 5.1 2.5 5.3 5.0

3.1 1.9 0.1 4.5

13 .4

6.9 4.7

15.4 3.3

I 4.3 I 3.6

I I 1. 2 ! 4.0

3.5

5.5 5.6 3.8

Note:EM values shown above are local amplitudes

6.4 2.6 0.1

17.1 20.9

6.5 8.7 0.0 7.8

22.6

2.7 17.5

7.8 19.3

7.7 19.5

4.5 3.3

22.4

5.3 15.8 13.5

EM Anomaly List

CP Real

ppm

68.8

18.9 35.2 10.5 21.0 21.7

10.6 33.8 7.9

18.2 59.2

7200 HZ Quad ppm

20.9

35.6 117.5

0.0 123.8 204.4

20.1 113.0

4.5 140.6 64.1

31.9 46.5 14.9 205.4

51.363.7 9.4 149.3

61.2 74.8 21.5162.3

72.5 55.2 3.2 28.8

54.8 240.5

71.9 45.8 45.8

70.3 238.6 238.6

13

CP Real

ppm

77.9

0.6 17.4

7.5 0.0

12.2

1.2 9.8 4.6 9.4

66.4

1.1 1.0

1.6 12.6

2.4 21.8

2.6 0.5 5.3

2.6 0.0

11.4

900 HZ Quad ppm

3.8

5.2 17.1 2.2

16.8 26.3

3.2 16.5 2.8

18.6 8.1

8.4 25.3

12.6 18.7

14.1 20.0

16.1 3.9

34.0

14.3 31.4 31.4

Vertical Dike COND DEPTH*

siemens m

0.6

0.3 0.3

0.4

0.5 0.8

3.4 0.2

0.5 0.2

1.2 0.2

1.1 0.4 0.3

32

o o

20

22 8

26 o

24 o

41 o

38 5 3

Mag. Carr

NT

o

o o

31 667

o

o o

38 o o

o 822

o 552

o 650

o 170

o

o 1069

o

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the flight line, or because of a shallow dip or magnetite/overburden effects

I I Label Fid I

I LINE IA

10860 3860.6 3908.5 IB

ILINE IA IB

10870 3624.1 3560.0

LINE 10880 A 3450.0 B 3464.8 C 3502.0

LINE 10890 A 3378.5 B 3360.6 C 3324.0

LINE 10900 A 3195.3 B 3212.0 C 3241.8

LINE 10910 A 3134.8 B 3107.0 C 3069 ~4

!LINE 10920 IA 2940.0 IB 2957.0 !C 2988.2

LINE 10930 A 2883.4 B 2853.0 C 2817.0

CX COAXIAL CP COPLANAR

05006

CX 5500 HZ Interp XU'I'M

m YUTM

m Real

ppm Quad ppm

S B?

s s

s S

S?

s s s

s s s

s s s

s s s

s s s

FLIGHT 3 551372 5696567 552544 5697742

FLIGHT 3 551345 5696474 552548 5697665

FLIGHT 3 551377 5696423 551742 5696798 552620 5697705

FLIGHT 3 551407 5696385 551795 5696776 552497 5697477

FLIGHT 3 551446 5696357 551850 5696760 552535 5697458

FLIGHT 3 551362 5696192 551923 5696757 552620 5697459

FLIGHT 3 551575 5696335 551980 5696749 552672 5697453

FLIGHT 3 551462 5696155 552046 5696748 552701 5697399

0.6 11. 2

3.1 7.6

2.8 3.5 5.8

7.1 2.3 2.7

7.2 3.7 3.2

7.0 4.5

10.4

0.4 2.4 4.9

9.2 4.6 5.1

Note,EM values shown above are local amplitudes

5.6 21.1

6.3 10.7

1.6 4.3 8.7

8.0 19.6

7.8

6.9 13 .5 12.4

1.8 19.5 24.0

2.4 6.4

22.7

9.3 17.5 27.1

EM Anomaly List

CP Real

ppm

70.8 6.3

30.3 21.9

7200 HZ Quad ppm

61.4 217.1

32.2 118.7

32.7 15.3 35.4 183.9

9.8 135.2

57.4 69.2 34.3 199.1 15.3 142.3

36.9 54.0 17.5 140.4 19.6 153.4

41. 9 20.7 21.7

45.7 18.5 25.0

60.7 24.0 52.9

4.1 149.6 191.7

50.4 109.5 150.6

36.4 142.9 137.5

14 -

CP Real

ppm

2.1 4.9

1.8 9.7

1.6 2.2 4.6

2.0 1.9

24.2

2.3 0.9 2.1

2.6 2.6 6. '/

1.5 4.3

15.6

1.8 6.4

53.4

900 HZ Quad ppm

17.2 27.7

6.1 14.9

5.0 23.7 16.1

15.4 25.9 18.6

12.1 17.9 20.0

7.2 20. 24.1

10.9 15.1 19.4

15.1 18.4 18.9

Vertical Dike COND DEPTH*

siemens m

0.7

0.4 0.8

0.7 0.7

1.0

1.2 0.3 0.3

0.3 0.6

0.3

1.2 0.3 0.2

7

27 20

40 25

29

31 o 1

o 2

o

26 o o

Mag. Corr

NT

o 1240

o 727

o o

578

o o

54

o o o

o o o

o o o

o o o

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the flight line, or because of a shallow or magnetite/overburden effects

EM Anomaly List

I ex 5500 HZ CP 7200 HZ CP 900 HZ Vertical Dike Mag, Corr lLabel Fid Intcrp XUTM YUTM Real Quad Real Quad Rea] Quad COND DEPTH* I m m ppm ppm ppm ppm ppm ppm siemens m NT

ILINE 10940 FLIGHT 3 IA 2737,0 S 552746 5697370 8,4 14.3 7,3 94,9 1.2 11.7 0.7 10 0

ILINE 10950 FLIGHT 3 I IA 2572.0 S 552818 5697360 I 8,3 16.5 43.7 114,1 39.5 14,2 0.6 5 0

- - --ILINE 10960 FLIGHT 3 I [A 2245.0 S 551999 5696486 I 2,7 3.7 30.5 91.4 1.1 13,5 0 IB 2280,0 S 552852 5697338 I 11.3 16.0 63.2 144.0 23.4 19.3 0.9 12 0

[LINE 10970 FLIGH'f 3 IA 2150,3 S 552114 5696516 8.1 7.3 41.3 80,4 2.3 13 .1 1.3 31 0 IB 2108.8 S 552921 5697324 5.7 14. ] 25,9 162.0 8.1 20.3 0.4 6 0

[LINE 10980 FLIGHT 3 IA 1992.7 S 552129 5696483 6.6 6.5 63.3 96.9 4.6 15.5 1.1 30 0 IB 2029.3 S 552949 5697306 3.4 12.9 26.1 197.9 6.8 25.7 0.3 4 0

- - -- - - - -- - -- - - - --

ILINE 10990 FLIGHT 3 I IA 1899.0 S 552190 5696445 5.1 6.2 65.4 85,0 1.6 16.1 I 0,8 31 0 IB 1859.6 S 552987 5697259 3.8 9.1 36.5 179,6 0.0 24.4 I 0.4 15 0

- --ILINE 11000 FLIGHT 3 I IA 1741.7 S 552228 5696431 3.9 8.6 63.6 78.6 1.2 14 .1 ! 0.4 17 0 IB 1779.2 S 553037 5697249 0.7 9.3 35.6 143.4 1.3 19.4 0

[LINE 11010 FLIGHT 3 IA 1648.8 S 552345 5696477 4.0 10.7 63.1 81.2 1.3 15.9 0.4 11 0 iB 1606.7 S 553181 5697302 4.3 4.8 56.7 97.4 2.9 15.1 0.9 41 0

LINE 11020 FLIGHT 3 A 1492.1 S 552323 5696387 5.6 5.0 59.2 42.9 1.5 10.0 1.2 37 0 B 1509.0 S 552712 5696773 2.2 9.8 10.4 71.4 0.6 8.3 0 C 1528.3 S 553167 5697240 0.7 5.5 45.6 53.5 2.2 10,9 0

ILINE 11030 FLIGHT 3 IA 1410.3 S 552349 5696338 3.3 6.9 74.8 97.9 10.1 20.1 0.4 24 0 IB 13 75.8 S 553015 5697006 4.1 2.8 59.5 84.1 1.2 15.4 0

CX COAXIAL *Estimated Depth may be unreliable because the CP COPLANAR Note:EM values shown above stronger part of the conductor may be deeper or

are local amplitudes to one side of the flight line, or because of a 05006 15 shallow dip or magnetite/overburden effects

I I Label Fid

I LINE 11040 IA 1238.6 IB 1264.4

I LINE 11050 iA 852.4 IB 822.2

I LINE 11060 IA 685.7 IB 709.4

LINE 11070 A 862.9 B 895.2 C 913.7

! LINE 11080 A 10451.7 B 10441.2 C 10412.5 D 10392.7

LINE 11090 A 10272.5 B 10283.2 C 10302.8 D 10323.4

LINE 11100 A 10199.2 B 10186.0 C 10161.7 D 10142.7

I LINE 11110 iA 100~6.5 IB 10035.8

CX COAXIAL CP COPLANAR

05006

EM Anomaly List

CP 7200 HZ Interp XUTM

m YUTM

m

CX Real

ppm

5500 HZ Quad ppm

Real ppm

Quad ppm

s s

s s

s s

s s s

s s s s

s s s s

s s s s

s s

FLIGHT 3 552385 5696302 553005 5696935

FLIGHT 3 55247l 5696317 553047 5696898

FLIGHT 3 552550 5696328 553090 5696883

FLIGHT 4 552381 5696091 553108 5696834 553525 5697229

FLIGHT 2 552418 5696052 552638 5696279 553263 5696894 553644 5697275

FLIGHT 2 552524 5696064 552750 5696321 553191 553667

FLIGHT 552521 552810 553305 553710

5696767 5697230

2 5696020 5696289 5696821 5697198

FLIGHT 2 552580 5696007 552810 5696237

1.3 7.9

4.7 3.2

1.1 3.5

5.1 3.2 2.4

5.6 9.5 7.4

10.5

8.8 5.4 6.1 2.0

9.3 8.4 5.8 4.3

8.3 8.4

Note:EM values shown above are local amplitudes

2.7 7.4

58.3 78.8

61. 6 93.7

1.7 64.2 184.6 4.9 107.4 94.5

9.5 5.6

8.2 11.8 3.3

10.8 13.7 8.4

11.1

13 .5 9.8

13 .5 18.7

7.9 7.9 7.5

12.1

7.3 13.2

42.9 183.3 88.4 92.3

36.8 52.4 75.5 100.7 31.9 127.0

46.9 49.0 41.1 148.9 45.7 103.0 34.1 222.3

68.9 77.4 48.3 125.4 44.3 116.1 38.7 178.8

76.4 75.9 34.9 35.4

81. 0 149.9 148.9 208.9

80.7 74.4 90.6 137.6

16

CP Real

ppm

13.5 2.5

1.2 1.9

1.0 1.2

11.1 1.1 2.9

3.9 1.5 1.3 4.5

7.2 3.4 1.6 1.2

5.0 1.7 1.5 1.0

7.2 1.9

900 HZ Quad I ppm I

12.3 19.3

28.3 19.6

25.2 19.6

7.6 18.1 17.3

10.0 21.3 16.0 29.8

14.5 18.7 16.5 22.6

17.1 24.5 21 1 28.4

17.1 25.0

Vertical Dike COND DEPTH'"

siemens m

1.3

0.6

0.5

0.6 0.3

0.5 0.8 1.0 1.2

0.8 0.6 0.5

1.5 1.3 0.8 0.4

1.4 0.7

30

36

32

23 6

13 16 25 23

15 19 11

28 30 26 10

31 16

Mag. Carr

NT

o o

o o

o o

376 14 o

164 o o o

93 o

18 o

o o o o

o o

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the flight line, or because of a shallow dip or magnetite/overburden effects

I I Label Fid I I LINE 11110 Ic 10056.5 ID 10075.6

ILINE IA )B

11120 9946.6 9902.7

LINE 11130 A 9808.8 B 9831.2 e 9848.8

LINE 11140 A 9725.2 B 9700.4 e 9680.2

ILINE IA

i B

11150 9570.2 9608.0

ILINE 11160 jA 9486.7 IB 9446.0

LINE 11170 A 9110.7 B 9140.0 e 9158.0

LINE 11180 A 9024.5 B 9002.0 e 8982.0

ILINE :A IB

11190 8857.5 8897.0

ex COAXIAL ep COPLANAR

05006

EM Anomaly List

Interp XUTM m

YUTM m

CX Real

ppm

5500 HZ Quad ppm

CP 7200 HZ Real QUdd

ppm ppm

s s

s s

s s s

s s s

s s

s s

s s s

s s s

s s

FLIGHT 2 553330 5696762 553792 5697210

FLIGHT 2 552886 5696239 553778 5697153

FLIGHT 2 552950 5696237 553481 5696775 553865 5697129

FLIGHT 2 553004 5696210 553503 5696737 553890 5697104

FLIGHT 2 553038 5696178 553925 5697068

FLIGHT 2 553133 5696204 553967 5697055

FLIGHT 2 553023 5696014 553655 5696653 554010 5697011

FLIGHT 2 553256 5696190 553702 5696633 554043 5696952

FLIGHT 2 552832 5695690 553776 5696613

2.1 1.1

11.8 3.0

6.9 6.7 5.8

3.4 6.5 2.6

8.1 10.2

10.1 12.0

6.2 2.9 5.9

5.0 6.3 5.1

4.3 1.9

Note:EM values shown above are local amplitudes

5.5 12.2

10.2 19.4

23.5 100.5 31.0 174.4

111.9 23.1

110.6 170.9

8.9 124.3 113.8 21.9 2.3 106.6 24.5 16.6 173.3

5.1 17.1 18.3

7.3 8.3

10.8 10.3

5.8 11.1 22.8

6.0 14.4 17.3

2.3 7.4

96.8 60.2 3.8 89.2

16.4 149.4

78.4 11.2

61.5 119.1

76.3 48.2 14.5 111.4

30.5 50.2 10.0 127.6 12.1 131.3

92.4 12.7 6.2

68.9 11.1

120.9 155.9 152.1

88.5 111.3

17 -

CP Real

ppm

0.8 1.9

2.9 2.2

2.4 1.4 0.4

3.2 2.1 3.2

2.3 0.1

2.7 1.3

2.0 0.5 3.2

2.2 0.4 3.4

7.4 1.3

900 HZ Quad ppm

13.5 23.5

28.0 22.1

27.3 13.3 22.8

20.2 12.1 20.5

19.2 15.3

19.8 14.3

9.3 16.7 17.4

23.2 20.5 19.8

12.5 14.6

Vertical Dike COND DEPTH*

siemens m

1.6

0.8 0.4 0.3

0.6 0.4

1.3 1.6

1.2 1.6

1.2

0.3

0.8

0.3

23

24 o o

34 o

31 25

23 21

37

o

31

o

Mag. Carr

NT

o o

29 o

11 o o

o o o

o o

o o

o o o

o 12

o

o o

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the fl line, or because of a shallow dip or magnetite/overburden effects

I I Label Fid

iLINE 11190 Ic 8914.0

LINE 11200 A 8820.2 B 8780.0 C 8758.6

LINE A B C

I LINE IA IB

ILINE IA !B i C ID

11210 8636.9 8658.5 8676.7

11220 8544.4 8522.9

11230 8394.9 8414.8 8433.7 8449.5

LINE 11240 A 8224.2 B 8203.5 C 8186.1

LINE A B C D

LINE IA IB , C

11250 7692.2 7709.9 7728.8 7740.7

11260 7610.6 7587.8 7574.1

CX COAXIAL CP COPLANAR

05006

EM Anomaly List

CX 5500 HZ CP 7200 HZ Interp XUTM

m YUTM

m Real

ppm

s

s s s

s s s

s s

s S

B? S

S B? s

s s s s

s s s

FLIGHT 2 554136 5696990

FLIGHT 2 552927 5695713 553772 5696561 554167 5696958

FLIGHT 553345 553826 554198

2 5696066 5696531 5696931

FLIGHT 2 553868 5696509 554295 5696930

FLIGHT 2 553057 553442 553897 554305

FLIGHT 2

5695631 5696044 5696476 5696886

553478 5695992 553912 5696412 554295 5696791

FLIGHT 2 553107 553531 553974 554275

FLIGHT 2

5695553 5695972 5696418 5696714

553581 5695943 554018 5696375 554288 5696656

4.0

4.4 3.6 2.2

3.8 2.8 3.8

8.4 7.0

7.2 0.0 5.9 1.5

7.5 5.0 4.1

1.7 7.2 2.9 8.2

11.3 5.1 6.3

Note:EM values shown above are local amplitudes

Quad ppm

13 .5

5.4 4.8

18.6

3.8 13 .6 12.7

13.3 11.6

11.3 10.6 22.3

9.5

Real ppm

Quad ppm

12.3 128.9

50.3 69.7 15.0 137.6 20.8 154.3

88.2 22.1 26.3

20.3 59.8

59.4 98.2 26.2 66.9

40.6 163.9 177.5

151. 6 199.1

63.5 195.2 134.7 149.8

11.9 110.4 262.5 17.6 31.0 146.0

5.1 53.S 64.5

6.9 5.3

25.7 5.7

12.4 8.7 6.2

27.8 86.7 24.9

112.7

78.2 23.7

117.8

36.7 228.4 162.5 167.2

245.4 170.8 155.9

18

CP Real

ppm

2.3

6.3 4.3 0.3

0.8 1.8 1.1

2.6 2.1

4.9 1.4

11.0 1.9

1.] 15.1

2.8

5.5 0.6

10.2 3.8

2.0 8.1 4.4

900 HZ Quad ppm

16.3

11.2 17.8 21.3

7.6 21.0 23.6

20.3 29.4

14.3 34.6 18.7 21.9

41.7 20.8 11.1

6.5 33.8 22.6 29.0

36.2 23.0 29.5

vertical Dike COND DEPTH*

siemens m

0.3

0.8 0.6

0.9

0.3

0.7 0.7

0.7

0.3

0.7 0.3 U.7

1.6

1.8

1.2 0.6 1.1

3

36 39

45

4

16 19

17

o

18 o

33

36

35

19 22 32

Mag. Corr

NT

o

o 35 o

o o o

o o

o 17 32 o

26 37 o

o 30 o o

34 14 o

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the flight line, or because of a shallow dip or magnetite/overburden effects

I I Label Fid I LINE 11270 A 7430.3 B 7442.9 e 7463.6 D 7475.1

LINE 11280 A 7357.6 B 7344.1 e 7321. 5 D 7309.8

LINE 11290 A 7159.9 B 7171.7 C 7191. 2 D 7202.1

LINE 11300 A 7075.8 B 7055.3 C 7044.3

LINE 11310 A 6736.0 B 6763.0 C 6774.9

LINE A B C

11320 6662.0 6632.0 6618.8

I LINE IA

11330 6462.0 6487.0 6499.9

!B IC

CX COAXIAL CP COPLANAR

05006

EM Anomaly List

ex 5500 HZ ep 7200 HZ Interp XUTM

m YUTM

m Real

ppm

8 8 8 8

8 8 8 8

8 8 S S

s s s

s s s

8 S S

s s s

FLIGHT 2 553309 5695626 553614 5695916 554055 5696355 554318 5696619

FLIGH'f 2 553387 5695612 553665 5695886 554100 5696319 554339 5696563

FLIGHT 2 553398 5695568 553687 5695852 554127 5696293 554396 5696561

FLIGHT 2 553724 5695813 554165 5696244 554418 5696492

FLIGHT 2 553554 5695568 554201 SS4485

FLIGHT 2 553616 554230 554505

FLIGHT 2 553679 554276 554591

5696215 5696494

5695557 5696179 5696457

5695554 5696148 5696463

8.6 4.9 5.6 7.4

4.6 1.7 5.0 8.8

4.8 2.3 6.6

11. 9

2.3 4.5 9.5

4.8 5.7 6.8

3.0 5.6 4.3

3.5 8.1 0.8

Note:EM values shown above are local amplitudes

Quad ppm

Real ppm

Quad ppm

14.4 19.0 37.3 10.5 65.4 223.5 16.5 26.7 189.8

8.3 137.7 195.5

7.7 26.0 23.3 9.7 56.2 208.2

23.3 26.5 193.3 11.5 168.5 240.6

7.9 27.7 48.6 7.3 49.7 164.7

16.5 28.0 179.0 16.5 167.2 219.3

8.3 36.9 140.0 14.9 30.6 204.6 14.3 179.1 258.0

3.7 21.6 66.5 27.0 37.5 234.5

9.6 155.1 234.9

5.6 13.3 13.8

5.7 14.7 5.7

17.7 34.9

108.9

13.0 29.2 43.0

52.0 175.8 235.5

60.2 128.6

90.7

19 -

CP Real

ppm

8.8 0.6 1.5 3.3

2.3 1.4 0.8 3.3

6.0 1.7 0.3 5.5

2.2 0.3 4.3

0.4 0.4 3.1

1.6 2.0 1.9

0.8 0.7 1.4

900 HZ Quad ppm

6.9 31. 5 25.0 36.8

5.5 26.8 24.7 46.0

7.7 23.9 22.8 44.9

20.3 24.9 48.6

9.5 29.8 45.4

7.7 22.3 37.4

6.2 16.9 17.0

Vertical Dike COND DEPTH*

siemens m

0.7 0.5 0.4 1.0

0.6

0.3 0.9

0.6

0.5 0.9

0.3 0.8

1.3 0.3 0.8

0.4 0.3

0.5 0.6

13 15

3 25

22

o 21

23

4 12

2 16

44 o

22

10 4

27 11

Mag. Corr

NT

o 25

o o

o 22

o 10

o o o

11

o o o

11 o o

34 o o

o o o

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the flight line, or because of a shallow dip or magnetite/overburden effects

EM Anomaly List

-------

I CX 5500 HZ CP 7200 HZ CP 900 HZ Vertical Dike Mag. Corr I Label Fid Interp XUTM YUTM Real Quad Real Quad Real Quad CON)) DEPTH* I m m ppm ppm ppm ppm ppm ppm siemens m NT

LINE 11340 FLIGHT 2 A 6382.0 S 553708 5695502 3.9 12.2 8.7 60.3 1.8 8.1 111 B 6354.7 S 554305 5696100 8.6 15.3 32.4 143.3 1.8 18.7 0.7 13 0 C 6338.0 S 554671 5696465 4.1 5.8 20.7 56.9 0.6 8.7 0.6 30 0

LINE 11350 FLIGHT 2 A 6200.0 S 553758 5695495 5.4 10.7 6.5 57.9 9.2 6.9 0.5 16 0 B 6224.1 S 554326 5696057 10.3 18.8 41. 3 154.6 1.0 20.6 0.7 8 0 C 6252.0 S 555000 5696727 2.6 7.8 6.1 80.9 0.6 11.1 0

LINE 11360 FLIGHT 2 A 6118.0 S 553796 5695456 5.9 7.6 7.2 50.5 3.0 6.3 0.8 25 65 B 6094.8 S 554312 5695961 9.7 26.3 60.0 167.4 1.1 23.9 0.5 0 0 C 6057.3 S 555063 5696747 10.9 36.0 30.2 268.8 2.9 34.6 0.4 0 0

ILINE 11370 FLIGHT 2 IA 5950.7 S 554426 5696010 8.7 10.3 55.1 129.7 0.7 19.5 1.0 23 0 IB 5981.1 S 555190 5696772 1.1 6.1 32.3 167.8 0.0 21. 9 0

I LINE 11380 FLIGHT 2 I IA 5794.0 S 554429 5695937 I 1.3 7.3 68.7 161. 8 1.7 24.0 0 IB 5755.3 S 555221 5696738 I 4.2 18.8 47.4 230.2 1.0 30.4 0.2 0 0

- - - --ILINE 11390 FLIGHT 2 I !A 5450.3 S 554485 5695950 I 4.6 13 .4 53.8 112.7 1.1 16.7 0.4 4 0 IB 5488.4 S 555295 5696742 I 3.2 6.0 30.1 137.7 1.5 18.1 0.5 30 0

- - - - -ILINE 11400 FLIGHT 2 I IA 5326.5 S 554558 5695949 I 1.2 10.4 46.7 42.4 0.5 9.9 0 IB 5284.8 S 555334 5696713 I 4.8 6.5 34.7 233.8 5.6 29.8 0.7 34 0

ILINE 11410 FLIGHT 2 IA 5171. 7 S 554505 5695818 3.6 6.4 68.6 137.1 1.6 21.9 0.5 28 0 IB 5208.3 S 555352 5696666 2.8 6.3 20.5 114.0 0.4 14.6 10

I LINE 11420 FLIGHT 2 jA 5060.1 S 554528 5695754 3.1 6.8 80.7 132.9 2.6 22.1 0.4 22 0 IB 5020.0 S 555370 5696609 0.1 9.6 13.7 164.4 1.4 21.5 0

CX COAXIAL *Estimated Depth may be unreliable because the CP COPLANAR Note:EM values shown above stronger of the conductor may be deeper or

are local amplitudes to one of the flight line, or because of a 05006 20 - shallow or magnetite/overburden effects

EM Anomaly List

-----_ .. ------. ~

I CX 5500 HZ CP 7200 HZ CP 900 HZ Vertical Dike Mag. Corr I Label Fid Interp XUTM YUTM Real Quad Real Quad Real Quad COND DEP'l'H* I m m ppm ppm ppm ppm ppm ppm siemens m NT

-------~

ILINE 11430 FLIGHT 2 i IA 4899.4 S 554558 5695724 I 6.9 4.3 92.3 127.0 2.5 23.9 2.0 40 0 IB 4934.0 S 555403 5696565 I 0.6 5.8 6.6 95.5 0.1 12.5 0

- --I LINE 11440 FLIGHT 2 I IA 4808.9 S 554183 5695284 I 21. 9 10.2 192.8 111.4 183.4 19.4 4.2 22 0 IB 4787.7 S 554667 5695756 I 4.6 7.3 82.9 126.0 2.2 25.0 0.6 27 0

I LINE 11450 FLIGHT 2 I IA 4621.2 S 554623 5695641 I 3.6 8.3 88.2 51.6 2.4 16.4 0.4 16 0 IB 4638.6 S 555035 5696058 I 9.2 18.7 39.2 124.2 0.4 17.6 0.6 4 0

---------

ILINE 11460 FLIGHT 2 IA 4507.3 S 554718 5695657 10.6 7.4 98.8 102.5 6.3 24.6 2.0 30 0 IB 4492.6 S 555024 5695967 4.6 11.1 48.6 181.1 0.9 25.6 0.4 13 0

-.-----~

ILINE 11470 FLIGHT 2 IA 4347.8 S 554761 5695641 4.6 2.5 77.6 88.3 2.1 19.3 0 !B 4360.4 S 555088 5695964 1.9 10.1 39.0 165.3 0.1 22.2 0

~----- ..

ILINE 11480 FLIGHT 2 IA 4083.6 S 554446 5695250 10.4 20.4 175.8 227.0 28.0 42.5 0.6 11 0 IB 4007.5 S 555937 5696728 5.9 25.0 23.3 174.9 1.6 23.3 0.3 0 0

I LINE 11490 FLIGHT 2 IA 3874.7 S 554447 5695191 7.7 9.5 180.0 165.7 54.1 34.7 0.9 21 0

LINE 11500 FLIGHT 2 A 3809.1 S 554478 5695148 2.4 5.0 68.1 36.5 4.2 9.5 0 B 3776.5 S 555179 5695843 0.7 11.6 13 .1 37.5 0.9 5.1 0 C 3734.4 S 556051 5696716 8.3 28.8 154.8 549.6 0.5 76.7 0.4 0 0

~ - - - --LINE 11510 FLIGHT 2 A 3605.3 S 554541 5695133 1.3 4.5 48.5 8.6 4.7 7.7 0 B 3642.0 S 555441 5696042 3.1 8.7 8.0 119.7 1.6 15.9 0.3 12 0 C 3668.1 S 556052 5696661 15.2 45.7 113.8 414.7 0.9 57.1 0.5 0 0

------_ ...

CX COAXIAL *Estimated Depth may be unreliable because the CP COPLANAR Note:EM values shown above stronger part of the conductor may be deeper or

are local amplitudes to one side of the flight line, or because of a 05006 21 .. shallow dip or magnetite/overburden effects

i !Label

i Fid

iLINE 11520 A 3539.3

iB 3493.8 IC 3463.5

LINE 11530 A 3343.2 B 3382.0 C 3408.9

ILINE IA

IB IC

·LINE iA IB

ILINE IA IB

ILINE IA 'B

ILINE A B

11540 3260.0 3242.0 3213.2

11550 3100.0 3153.6

11560 3006.1 2950.9

11570 2631.4 2685.7

11580 2547.5 2484.3

LINE 11590 A 2374.2 B 2389.7 C 2426.0

I LINE 11600 IA 2303.7

CX COAXIAL CP COPLANAR

05006

CX 5500 HZ Interp XUTM

m YUTM

m Real

ppm Quad ppm

s s s

s s s

s s s

s s

s s

s s

s s

s s s

s

FLIGHT 2 554613 5695141 555487 5696021 556066 5696599

FLIGHT 2 554714 5695169 555565 5696021 556166 5696624

FLIGHT 2 555291 5695660 555627 5696013 556183 5696577

FLIGHT 2 555126 5695454 556246 5696553

I I I

_._--- ~

FLIGHT 2 I 555211 5695453 I 556311 5696554 I

FLIGHT 2 555258 5695436 556449 5696625

FLIGHT 2 555302 5695395 556457 5696556

FLIGHT 2 555304 5695338 555657 5695693 556498 5696539

FLIGHT 2 555209 5695174

3.9 4.7 9.0

5.0 1.2

11.2

4.0 2.6 8.5

5.4 25.1 44.7

12.0 15.0 39.4

17.6 11.1 30.3

4.3 2.2 10.5 56.8

9.4 16.2 15.7 53.6

6.4 14.8 6.0 18.4

6.3 7.5 3.5 13.1

1.2 4.9 6.7

4.3

7.9 6.0

51.4

9.6

Note:EM values shown above are local amplitudes

EM Anomaly List

CP Real

ppm

7200 HZ Quad ppm

43.3 69.2 17.4 212.0 67.8 333.7

16.0 74.6 9.2 150.7

51.2 315.4

16.3 2.7

41.5

136.4 84.2

250.2

14.8 35.7 49.8 333.7

31. 4 92.5 81.8 349.5

52.2 104.3 135.2 443.5

66.8 121.1 132.8 451.3

57.4 74.5 34.9 100.2 98.8 429.7

30.7 38.9

22 -

CP Real

ppm

1.2 0.0 3.1

1.8 0.0 2.0

0.7 1.1 0.4

1.1 2.0

1.0 2.4

1.1 0.7

1.9 0.8

0.8 0.3 0.6

2.5

900 HZ Quad ppm

11.4 26.8 44.8

11.1 18.9 41 4

18.0 11.2 33.5

4.3 44.7

12.9 48.3

Vertical Dike COND DEP'l'H*

siemens m

0.7 0.2 0.3

0.4

0.4

0.2

0.4

0.3

0.7 0.5

35 o o

9

o

o

o

o

14 o

I I

Mag. Carr

NT

o 10 o

o o o

o o o

o o

o o

... _------

17.2 I 64.4 I

--------

I 20.2 I 62.6 I

14.3 14.7 58.9

6.1

0.5 0.4

0.9 0.3

0.8 0.2

0.4

7 o

28 2

31 o

15

I I I

o o

o o

o 112

o

o

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the fl line, or because of a shallow or magnetite/overburden effects

EM Anomaly List

I I CX 5500 HZ CP 7200 HZ CP 900 HZ Vertical Dike Mag. Corr I Label Fid Interp XU'I'M YUTM I Real Quad Real Quad Real Quad COND DEPTH* I I m m I ppm ppm ppm ppm ppm ppm siemens m NT

~ --

[LINE 11600 FLIGHT 2 I IB 2279.3 S 555673 5695632 I 5.7 11.9 49.1 107.1 0.7 15.9 0.5 12 57 IC 223l.1 S 556539 5696470 I 3.5 8.8 6.6 15.4 l.2 2.0 0.4 15 0

h_ ~_ --- - -- - --ILINE 11610 FLIGHT 2 :A 2102.4 S 555198 5695080 3.9 6.0 3l. 7 17.2 3.8 5.6 0.6 26 100 'B 2126.1 S 555738 5695629 5.7 17.0 62.3 146.6 0.9 20.0 0.4 1 27 IC 2160.0 S 556489 5696371 3.5 26.2 11.7 200.3 0.0 25.9 0.2 0 0

- -- ~ --

I LINE 11620 FLIGHT 2 IA 2048.2 S 555236 5695054 2.6 l.7 26.1 17.3 8.6 2.4 0 IB 2018.8 S 555769 5695590 9.3 27.5 72.7 222.9 l.2 29.7 0.4 0 0 Ic 1980 0 S 556507 5696324 3.7 13 .1 7.7 56.1 0.2 7.3 0

- -- - - ~ - -ILINE 11630 FLIGHT 2 I IA 1853.5 S 555498 5695251 3.0 4.2 57.9 93.3 l.1 17.2 I 0 IB 1867.2 S 555803 5695551 12.1 36.7 52.9 186.8 l.] 24.6 0.5 0 I 0

- -

ILINE 11640 FLIGHT 2 I IA 1779.4 S 55554] 5695219 6.5 9.4 47.8 157.7 l.7 15.9 0.7 21 I 0 IB 1763.3 S 555844 5695524 11.5 26.0 50.6 183.5 2.1 25.5 0.6 2 I 0

~, - - - ~ -

ILINE 11650 FLIGHT 2 IA 1587.8 S 555603 5695215 3.9 8.9 28.5 97.1 3.3 12.3 0.4 15 0 IB 160l. 2 S 555925 5695532 3.5 13.0 4l.1 163.8 0.4 22.9 0.3 2 0

; LINE 11660 FLIGHT 2 I IA 1074.1 S 555965 5695500 4.3 12.1 51.5 233.7 l.0 30.9 i 0.4 10 0 :B 1020.0 S 556979 5696504 0.7 9.2 6.2 48.4 0.4 5.6 I 0

-I LINE 11670 FLIGHT 2 I IA 891.7 S 556001 5695468 0.0 15.9 51.5 157.9 l.6 21.5 I 0 I IB 939.0 S 557025 5696488 0.0 9.0 3.3 42.7 0.0 5.6 I 0

ILINE 11680 FLIGHT 2 IA 768.0 S 556040 5695443 2.4 9.5 67.6 308.4 3.0 40.8 0 iB '116.0 S 557033 5696430 3.1 6.8 l.6 38.0 0.1 4.9 0

CX COAXIAL *Estimated Depth may be unreliable because the CP COPLANAR Note:EM values shown above stronger part of the conductor may be deeper or

are local amplitudes to one side of the flight line, or because of a 05006 23 shallow dip or magnetite/overburden effects

I I LabeJ Fid I

I LINE ll690 IA 600.3 IB 626.0

I LINE ll701 IA 488.6 iB 460.0

; LINE IA iB

jLINE jA IB Ic ID

LINE A B C

ll710 7734.7 7760.0

ll720 7572.4 7555.4 7543.0 7515.0

11730 7352.1 7364.0 7389.7

LINE ll740 A 7291.9 B 7277.5 C 7266.0

ID 7233.9

I LINE ll750 jA 7ll5.0

LINE ll760 A 7010.0 B 6985.3 C 6956.0 D 69:<0.0

CX COAXIAL CP COPLANAR

05006

EM Anomaly l,ist

CP 7200 HZ Interp XUTM

m YUTM

m

CX Real

ppm

5500 HZ Quad ppm

Real ppm

Quad ppm

CP Real

ppm

s s

s s

s s

S S?

S S

S? S S

S S?

S S

s

s s s s

FI,IGHT 2 556105 5695436 556648 5695964

FLIGHT 2 556154 5695391 556648 5695907

FLIGHT 1 556197 5695382 556728 5695909

FLIGHT 1 555759 556029 556230 556753

FLIGHT 1 556083 556301 556824

FLIGHT 1

5694855 5695129 5695340 5695867

5695122 5695340 5695861

555881 5694842 556123 5695097 556317 5695285 556871 5695853

PLIGHT 1 556889 5695798

FLIGHT 556021 556453 556958 557595

1 5694828 5695280 5695781 5696425

9.8 2.8

9.1 4.3

9.4 4.0

5.9 2.9 9.6 4.2

5.2 8.6

28.1

9.4 1.9

28.5 9.3

42.4

7.4 44.0 1.2 3.9

Note:EM values shown above are local amplitudes

35.1 10.2

20.4 12.1

24.8 7.7

24.6 6.9

20.2 9.4

7.5 14.9

7.4

57.2 255.5 4.6 46.6

53.9 248.5 8.4 77.4

47.8 18.9

65.9 4.7

47.2 64.8

7.6 32.3

185.6

240.4 66.6

274.5 7.6

179.2 61. 2

6.3 81. 8 40.6

1.4 0.5

5.2 1.4

0.8 10.8

22.0 2.1

21.9 52.0

17.7 16.1

193.6

18.3 61.9 212.7 20.2 11.8 19.0 18.5 25.6 21.9 196.2 83.0 214.0

6.1 189.9 34.8 204.2

9.5 364.4

8.7 6.2 4.2 7.8

24.4 0.0

322.1 14.2

52.1 397.3

184.9 34.7 44.8 76.9

24

8.8 210.9 489.8

4.0

900 HZ Quad ppm

34.7 6.4

32.5 9.7

32.6 8.5

39.8 1.1

23.3 8.2

1.0 10.1

5.8

30.3 2.0 9.9 5.6

6.9

24.1 3.8 5.0

10.6

Vertical Dike COND DEPTH*

siemens m

0.4

0.6 0.4

0.5 0.5

0.3

0.6

0.7 0.7

0.6

1.0

o

5 13

1 16

o

6

18 8

10

27

Mag. Carr

NT

o o

o o

o o

o o o o

278 o o

o 556

o o

o

o 14712 15137

o

*Estimated Depth may be unreliable because the stronger part of the conductor may be deeper or to one side of the flight line, or because of a shallow dip or magnetite/overburden effects

EM Anomaly List

i CX 5500 HZ CP 7200 HZ CP 900 HZ I Vertical Dike Mag. Carr I I"abel Fid Interp XUTM YUTM Real Quad Redl Quad Real Quad i COND DEPTH*

m m ppm ppm ppm ppm ppm ppm I siemens m NT - - - --

.LINE 11770 FLIGHT 1 I jA 6624.9 S 557083 5695839 43.3 8.6 287.0 36.4 310.9 3.7 I 0 ;B 6654.0 S 557653 5696407 2.2 4.8 12.3 67.3 2.1 8.6 I 0

- -

[LINE 11780 FLIGHT 1 I I IA 6467.7 S 557105 5695798 I 40.7 7.7 105.8 31.6 241. 8 4.9 I 13526 I jB 6434.0 S 557727 5696420 I 4.7 4.5 6.2 41.8 0.8 6.1 I 1.0 36 0

- -- - -- - - - -- - -- - -- - -- - -- - --ILINE 11790 FLIGHT 1 I IA 6345.7 S 557189 5695813 I l3.6 10.0 180.8 31.4 199.1 4.5 328 IB 6374.0 S 557762 5696382 I 1.5 3.4 6.4 23.6 3.2 1.9 0

- - - - -- - •. - -- - _. - - . - --ILINE 11800 FLIGHT 1 IA 6176.4 S 557267 5695812 35.8 12.7 227.0 64.7 244.1 9.1 0 IB 6146.0 S 557814 5696376 1.1 2.3 6.9 37.5 2.4 5.2 0

ILINE 11810 FLIGHT 1 IA 6056.0 S 557304 5695773 40.0 30.5 214.1 180.7 242.7 21.7 2.8 4 0 i B 6071.0 S? 557610 5696086 15.3 8.5 165.3 26.3 184.7 4.6 3.0 17 3967 Ie 6086.0 S 557912 5696388 0.5 0.1 4.6 55.6 2.5 6.9 0

- -- - - . - - -- - -_. - _. - --.

ILINE 11820 FLIGHT 1 iA 5912.0 S 557114 5695523 2.0 4.9 17.0 55.9 12.6 7.9 0 IE 5899.8 S 557336 5695744 74.9 40.2 441.8 257.1 486.3 32.2 0 IC 5882.5 S? 557638 5696046 32.8 5.6 253.9 19.8 267.0 0.8 0 ID 5866.0 S 557935 5696341 0.7 3.2 6.8 38.5 2.8 4.6 0

- -- - --ILINE 11830 FLIGHT 1 IA 5790.7 S 557391 5695738 17.4 39.7 139.1 263.2 140.4 33.5 0.7 0 0 IE 5807.0 S? 557703 5696044 45.8 6.0 138.2 14.1 154.4 1.6 15364

-- - - -- - -ILINE 11840 FLIGHT 1 IA 5633.2 S 557451 5695725 7.4 32.0 63.9 198.8 59.8 26.0 0.3 0 576 IB 5626.0 S 557591 5695854 0.5 16.9 336.6 55.2 364.2 6.8 1618

ILINE 11850 FLIGHT 1 IA :'339.5 S 557670 5695876 10.6 26.8 26.8 188.6 2.6 26.1 2197

CX COAXIAL *Estimated Depth may be unreliable because the CP COPLANAR Note:EM values shown above stronger part of the conductor may be deeper or

are local amplitudes to one side of the flight line, or because of a 05006 25 shallow dip or magnetite/overburden effects

EM Anomaly List

-. -- ~. --

i CX 5500 HZ CP 7200 HZ CP 900 HZ Vertical Dike Mag. Corr !Lah,,"] Fid Interp XUTM YUTM Real Quad Real Quad Real Quad COND DEPTH*

i m m ppm ppm ppm ppm ppm ppm siemens m NT - -.- - -- -

ILINE 11860 FLIGHT 1 IA 5160.0 S 557662 5695776 21.7 27.9 131.4 402.9 121.2 57.0 1.2 6 0

- -- - --ILINE 11870 FLIGHT 1 IA 5057.8 S 557766 5695825 10.2 31.8 115.7 385.2 2.4 57.6 0.4 0 1023 IE 5074.0 S? 558095 5696150 0.7 4.5 145.6 18.2 167.0 2.0 0

- - _. - -~- - -

ILINE 11880 FLIGHT 1 IA 4880.6 S? 557712 5695690 I 16.2 46.3 143.5 440.0 10.4 64.9 0.6 0 0 IE 4869.2 S 557926 5695912 I 8.6 49.2 75.0 327.1 14.5 42.8 0.3 0 0

- -- -ILINE 11890 FLIGHT 1 I !A 4786.3 S 557844 5695757 9.4 42.3 82.2 378.6 10.5 49.9 0.3 0 0

iLINE 11900 FLIGHT 1 IA 4641.7 S 557186 5695026 2.7 7.8 22.4 66.3 20.4 8.8 0 IE 4599.2 S 557965 5695807 6.6 26.2 54.3 180.4 43.4 22.9 0

,LINE 11910 FLIGHT 1 jA 4516 0 S 558032 5695806 2.4 11.1 10.3 110.1 14 .1 12.9 0

I LINE 11920 FLIGHT 1 jA 4326.0 S 558084 5695784 4.4 12.7 40.5 93.6 13.1 12.4 0.4 8 0

- -- - -- - - -. -- - -- -. - - -. - - - -- - -- - -

I LINE 11930 FLIGHT 1 j IA 3926.0 S 558157 5695795 2.6 5.0 3.1 63.6 4.2 8.5 0 I

- - ~. - -_. - --- - --- --.---- -I LINE 11940 FLIGHT 1 I jA 3732.0 S 558186 5695760 2.7 9.8 5.0 50.6 12.4 6.4 112 I

- -I LINE 11950 FLIGHT I IA 3605.1 S 557037 5694537 2.8 14 .4 24.1 181. 4 7.2 22.2 269 I IE 3660.0 S 558186 5695672 0.9 1.3 7.3 45.0 4.6 6.3 60 I

- - - -- - - - -- - --LINE 11960 FLIGHT 1 A 3528.0 S 557111 5694526 0.2 44.2 36.5 342.6 2.0 44.3 278 B .34~Hl. 0 S 557677 5695096 4.8 8.7 5.7 66.2 2.1 8.4 0.5 18 0 C 3471. 0 S 558167 5695588 1.6 14.5 9.0 111. 6 0.7 14.7 0

CX COAXIAL *Estimated Depth may be unreliable because the CP COPLANAR Note:EM values shown above stronger part of the conductor may be deeper or

are local amplitudes to one side of the flight line, or because of a 05006 26 shallow dip or magnetite/overburden effects

EM Anomaly List

CX 5500 HZ CP 7200 HZ CP 900 HZ Vertical Dike Mag. Corr Label Fid Interp XUTM YUTM Real Quad Real Quad .Real Quad COND DEPTH*

m m ppm ppm ppm ppm ppm ppm siemens m NT

ILINE 11970 FLIGHT 1 IA 3340.0 S 557175 5694515 1.6 26.4 10.5 219.8 0.0 28.2 120 IB 3368.0 S 557731 5695082 3.0 14.3 9.1 87.0 4.4 11.0 0.2 0 0 Ic 3394.0 S 558271 5695614 5.7 19.3 13.2 181.1 1.3 22.8 0.3 0 0

LINE 11980 FLIGHT 1 A 3251.0 S 557233 5694506 5.4 3.6 0.6 36.8 0.5 4.2 1.7 42 130 B 3226.0 S 557793 5695059 6.2 7.9 14.4 81. 8 10.4 10.5 0.8 25 0 C 3201.0 S 558328 5695605 3.2 9.4 7.4 63.8 9.0 7.8 0.3 5 0

.. - - -- - -iLINE 11990 FLIGHT 1 I IA 3093.0 S 557703 5694906 3.6 16.1 7.1 135.2 0.0 16.5 I 0.2 0 102

- - - -- - ..

ILINE 12000 FLIGHT 1 I IA 2980.0 S 557434 5694565 1.5 10.4 7.3 83.2 3.5 9.7 I 0 IB 2966.0 S 557748 5694867 8.7 37.2 53.3 261.8 9.2 34.8 I 0.3 0 0

- -

ILINE 12010 FLIGHT 1 I iA 2616.0 S 557473 5694542 8.5 13.0 17.2 106.4 6.4 13.5 I 0.8 9 0 IB 2630.5 S 557768 5694835 4.0 24.4 51.3 243.5 1.5 31.8 I 56

- - - -- - -iLINE 12020 FLIGHT 1 IA 2520.0 S 557532 5694515 3.9 17.5 25.6 150.1 9.8 19.9 0.2 0 0 iB 2506.6 S 557810 5694800 8.6 28.5 72.6 307.3 8.3 40.5 0.4 0 74

I LINE 12030 FLIGHT 1 IA 2363.0 S 557557 5694485 8.0 15.8 20.5 137.7 6.7 17.6 0.6 5 0 IB 2376.4 S 557831 5694761 5.3 35.7 79.9 378.3 5.3 50.2 0.2 0 77

- -- - --ILINE 12040 FLIGHT 1 IA 2270.0 S 557584 5694432 3.7 11. 2 11.0 76.5 10.6 10.0 0 IB 2256.0 S 557873 5694721 7.6 31. 3 58.3 297.1 5.1 39.5 0.3 0 0

ILINE 12050 FLIGHT 1 IA 2103.0 S 557619 5694426 6.2 8.4 12.5 39.0 10.5 5.4 0.8 16 0 iB 2117.0 S 557914 5694698 3.2 34.7 31.0 270.1 1.4 <4.3 156

- - - -- - - - - - -- - -

CX COAXIAL *Estimated Depth may be unreliable because the CP COPLANAR Note:EM values shown above stronger part of the conductor may be deeper or

are local amplitudes to one side of the flight line, or because of a 05006 27 - shallow dip or magnetite/overburden effects

EM Anomaly List

- - -- -- - -

I CX 5500 HZ CP 7200 HZ CP 900 HZ I Vertical Dike Mag. Corr iLabel Fid Interp XUTM YUTM Real Quad Real Quad Real Quad I COND DEPTH' i m m ppm ppm ppm ppm ppm ppm I siemens m NT

ILINE 12060 FLIGHT 1 I I iA 1998.0 S 557982 5694695 0.0 26.0 14 .4 195.6 0.3 24.8 I 238 I

- .. - - - - - - - - - - - --ILINE 12070 FLIGHT 1 I I IA 1866.0 S 558031 5694681 0.0 21.3 2.8 125.4 10.4 15.3 215 I

-ILINE 12080 FLIGHT 1 I IA 1762.0 S 558077 5694634 0.0 17 .5 6.3 122.2 1.2 14.9 111 I

- - - -- - -

ILINE 12090 FLIGHT 1 jA 1636.0 S 558100 5694601 1.4 11.6 2.0 66.4 0.0 8.6 98

- - - ~- - -ILINE 12101 FLIGHT 4 !A 498.0 S 558126 5694556 2.4 5.8 14.2 38.1 16.7 4.7 0

[LINE 19010 FLIGHT 5 iA 324.0 S 548560 5698001 6.0 4.2 32.7 87.3 26.1 8.2 4623 iB 306.4 S 548114 5698426 6.8 8.4 56.9 110.6 28.5 15.2 0

LINE 19020 FLIGHT 5 A 614.4 S 551355 5696614 7.1 5.4 101. 2 143.5 1.1 26.8 1.5 37 0 B 630.6 S 551026 5696942 3.4 18.6 46.6 225.0 1.9 30.5 0.2 0 0 C 676.0 S 550195 5697767 7.6 24.0 39.0 140.4 2.1 18.5 0.4 0 21 D 712.0 S 549530 5698426 2.5 2.8 18.5 85.2 2.3 12.2 0 E 753.7 S 548714 5699258 5.1 6.0 111.6 177.0 5.3 29.1 0.8 34 0

- - - -- - -LINE 19030 FLIGHT 5 A 1142.8 S 554113 5695284 9.9 9.6 96.3 64.7 107.9 10.9 0 B 1114.6 S 553375 5696016 3.5 3.4 30.1 30.1 0.2 7.8 0.9 47 0 C 1083.0 S 552644 5696752 4.8 15.3 15.4 183.1 3.2 24.2 0.3 6 0 D 1041.5 S 551732 5697657 3.6 24.1 69.6 321.0 0.4 42.9 0.2 0 0 E 986.5 S 550453 5698941 4.1 2.9 36.7 18.9 3.7 8.1 0

ILINE 19040 FLIGHT 5 IA 2154.8 S 555906 5694886 4.1 15.8 41.3 152.4 40.2 19.6 0.3 0 0 IB 2171.3 S 555567 5695241 6.5 12.3 60.3 189.1 2.2 /.6.0 0.6 15 0 ie 2212.6 S 554724 5696082 5.7 10.6 39.3 114.9 1.8 16.5 0.6 16 0 ID 2236.9 S 554258 5696551 0.1 2.8 59.1 186.9 1.7 23.0 0

CX COAXIAL *Estimated Depth may be unreliable because the CP COPLANAR Note:EM values shown above stronger part of the conductor may be deeper or

are local amplitudes to one side of the flight line, or because of a 05006 28 - shallow dip or magnetite/overburden effects

EM Anomaly List

I CX 5500 HZ CP 7200 HZ CP 900 HZ I Vertical Dike Mag. Corr I Lahe] Fid Interp XUTM YUTM i Real Quad Redl Quad Real Quad COND DEPTH* I i m m I ppm ppm ppm ppm ppm ppm siemens m NT

- - - -

ILINE 19040 FLIGHT 5 I IE 2277.1 S 553486 5697302 I 3.7 1.1 36.0 94.6 3.3 6.6 0

- - - -- -

ILINE 19041 FLIGHT 5 ! IA 2354.2 S 552009 5698807 6.4 8.6 112.7 103.4 8.3 24.8 0.8 22 0

- - - -- - -II,INE 19060 FLIGHT 5 I IA 1686.9 S 557830 5695795 I 8.1 35.5 110.5 382.1 8.1 55.0 0.3 0 0

- - - -- - - - - - - ------

I LINE 19050 FLIGHT 5 I IA 1906.0 S 556139 5696097 I 3.9 0.0 2.7 31.0 0.9 4.0 0 IB 1875.0 S 555389 5696837 I 3.3 10.8 12.4 127.6 0.4 16.4 0.3 0 0

ex COAXIAL *Estimated Depth may be unreliable because the CP COPLANAR Note:EM values shown above stronger part of the conductor may be deeper or

are local amplitudes to one side of the flight line, or because of a 05006 29 - shallow dip or magnetite/overburden effects

APPENDIX E

DATA PROCESSING FLOWCHARTS

Processin

APPENDIX E

Flow Chart Electroma netic Data

Fugro Airborne Surveys

Electromagnetic Data Processing Flow

Processing Flow Chart Magnetic Data

Fugro Airborne Surveys

Magnetic Data Processing Flow

spike removal

magnetic leve;lllig net'Mlrk/tie line .r.tersections manual leYe! adjJStments micrcJeve!Lr(j

t.~ .. ~~~

Grids, Colowr Maps, Contour

Maps

EM Anomaly ~''O'0l-_---<o-I Maps, Digital List

and Report

Grids, Colour Maps, COntour

Maps

a