Top Banner
AIG March 10, 2014 remote sensing conference Philosophy & Photogeological Case Histories Nick Lockett & Associates Pty Ltd
35

Philosophy & Photogeological Case Histories · Philosophy & Photogeological Case Histories ... Image interpretation IMAGE INTERPRETATION BASE DATASET PRODUCT i) ... Final Geology

Jul 21, 2018

ReportDownload

Documents

phamdang

  • AIG March 10, 2014 remote sensing conference

    Philosophy & Photogeological Case

    Histories

    Nick Lockett &

    Associates Pty Ltd

  • Orapa 2125 A/K1 pipe vegetation anomaly

    Source: Botswana Government, Manfred Marx, Rough Diamond Review

  • W.A. lateritic weathering terrain: Generalised regolith & geochemical profiles

    After Lithofire 2002

  • Relationship between land form & regolith in arid regions of the Yilgarn Craton

    Modified after Anand 2002

  • Schematic geological setting of primary and secondary diamond deposits in the Kasai Craton,Angola and DRC.

  • Glacial Dispersion of Kimberlite Indicator Minerals

  • Schematic diagram of typical landforms associated with continental glaciation

  • Enlarged Portion of Northern Quebec Black & White Air Photo

  • Guelb er Richat Dome, Taoudeni Basin, Mauritania

  • Central African Project Area Landsat 7 + ETM Image

  • Erosional landform expression of surface & sub-surface geology

    From Miller, 1961, Photogeology

  • SRTM DEM

    90m cellsize (30m over USA,

    Australia)

    Derived from Shuttle Topographic

    Radar Mapping Mission

    Available from 50 deg North to 50 deg

    South

    Not edited (preliminary only)

    Holes around water bodies and in

    radar shadows

    Noise in flat areas

  • Stereoscope

  • Photogeology mapping flow sheet

    Surface geology map

    Stage 1. Image interpretation

    IMAGE INTERPRETATION BASE DATASET PRODUCT

    i) Published geology, proprietary outcrop

    and regolith mapping, drill hole regolith and bedrock geology

    Bedrock geology and regolith framework

    ii) Stereo imagery

    Bedrock outcrops, fractures, foliation, selected litho

    contacts, regolith/landform units (e.g. breakaways), drainage channels, dunes, culture

    iii) Landsat 7 B,G,R=4/2, 4/7,5/7 Saprock, ferricrete, backslope ferricrete,

    bedrock litho units, saprolite, sand cover,

    sheetwash, alluvium

    iv) K,U,Th, ternary radiometrics Ferricrete, backslope ferricrete, sand/alluvium,

    granitoids

    v) Aeromagnetics Pisolithic ferricrete, subsurface bedrock geology and structure

    vi) Reconnaissance field check Ground truthing and map verification

  • Colour air photo 1:25,000

    1 kilometre

    channel

    saprock

    road

    breakaway (unconformity)

    Foliation trend

    Pallid/mottled zone

    ferricrete

    bif

    calcrete/hardpan

  • Landsat TM: B,G,R, as bands 2,4,7

    1 kilometre

    backslope

    bedrock outcrop

    ferricrete

    channel Saprolite/ saprock

    bif

  • backslope ferricrete

    Ironstone ferruginous

    and saprolite

    fresh outcrop

    haematite-maghemite 1 kilometre

    channel

    goethite

    bif

    ferruginous bedrock

    Landsat TM: B,G,R, = 4/2,4/7,5/7

  • Thorium radiometrics: pseudocolour image

    1 kilometre

    channel

    ferricrete

    ferruginous bedrock

    breakaway

    backslope

  • Final Geology Interpretation

    1 kilometre

  • DTM with geology drape

  • Botswana Published Geology

    Botswana

    Published

    1:125,000

    Geology

  • Published Geology

    Surface Geology Interpretation

  • Geology Drape

  • Geology Perspective

  • Botswana Solid Geology and Magnetics 1vd

  • Merlin Area, Northern Territory, Regolith and Structure Mapping;

  • Enlarged Portion of 1:50,000 Colour Air Photo NTc Limmen Gate, Run 27, Frame 119, Acquired 14-9-1995

    Air Photo Supplied by NT Dept Lands & Environment

  • Portion of Merged LANDSAT TM/SPOT Image Covering Merlin Project

    Imagery Acquired & Processed by Geoimage Pty Ltd

  • Merlin Area Photogeological

    Map

    Produced from 1:10,000 Colour Air Photos and Field Mapping

  • Evolution of Landscape

    Showing Inversion of Topography on the Merlin Plateau

  • Portion of 1:50,000 Merlin Regional Photogeology

  • Pull-apart Basin Model & Riedel Shear Diagram

  • Conclusion

    DEMS & satellite imagery available from a variety of

    sources. (90m DEM globally available)

    Resolution range 90m to 0.5m Its important to

    pick the right resolution and scale for your project

    Satellite imagery can be draped over DEM for

    stereoscopic viewing and interpretation

    Accurately georeferenced topographic &

    photogeological interpretive maps can be produced

    to order for anywhere in the world

    Satellite imagery, DEMs and derived products ideal

    for planning and compiling results of field

    programs

Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.