GNS Science Geological Mapping and Innovative GIS Applications for Identifying Natural Resources Potential: The New Zealand QMAP Experience Robert Smillie, Simon Cox, David Heron & Mark S Rattenbury 31 st STAR Conference. Nadi, Fiji 8 June 2016
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GNS Science
Geological Mapping and Innovative GIS Applications for Identifying Natural Resources Potential: The New Zealand QMAP Experience
Robert Smillie, Simon Cox, David Heron & Mark S Rattenbury
31st STAR Conference. Nadi, Fiji8 June 2016
GNS Science
Presentation Outline
• New Zealand’s Geological Map QMAP• Importance of geological maps for minerals
exploration and investment • Value-added GIS modelling to mapping • Importance of re-mapping – case study from PNG
GNS Science
QMAP: Geological Map of New Zealand
• National coverage at 1:250,000
• 20-year period
• 21 separate maps
• Designed and built around ESRI ArcGIS –key project decision
GNS Science
GNS ScienceEdbrooke 2001
GNS Science
Edbrooke 2006
GNS Science
1968
2003
QMAP: Re-mapping
GNS Science
Future-proofing QMAP GIS data through episodic updates…
QMAP Seamless GIS 2014
And QMAP Seamless GIS 2016 is coming…
21 individual QMAP vector GIS datasets/CDs
GNS Science
QMAP on -line:http://data.gns.cri.nz/geology
GNS Science
Regional Geological Map Archive and Datafile (RGMAD) – A Nationally Significant Database
• http://data.gns.cri.nz/metadata
GNS Science
Geological maps are a primary data resource
Resources
MineralsAggregatePetroleumCoalGroundwaterGeothermal
Hazards
Active faultsSeismic shakingLandslidesErosionDeposition
Geological maps
Environmental
Soil qualityContaminantsNatural toxicityClimate changeCO2 storage
Research and education
GNS Science
New Zealand: World -Class Gold Deposits
Waihi Gold Mine10 Million Ounces
Combined Annual Production of over 300,000 Ounces
NZ$ 500M
Macraes Gold Mine5 Million Ounces
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NZ EEZ Marine Minerals
Kermadec Arc
Tofua Arc
GNS Science
SW Pacific: World-Class
Mineral Deposits
Vatukoula Au
Waihi Au
Gold Ridge Au
Macraes Au
Panguna Cu AuLihir Au
Ok Tedi Cu Au
Goro Ni Co
GNS Science
Area Selection for Investment = Uncertainty
Geologic Maps + Data = Derisking
Exploration: The Life Blood of Mining
GNS Science
Mineral Discoveries in the Pacific Declining
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Exploration Investment in Pacific Halved in last 20 Years
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Mineral Potential = Key Investment Factor
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A weighted aggregation
process
NZ Gold Mineral Potential Modeling
GNS Science
Mesothermal Gold
Prospectivity Modelling: Assisting in Area Selection
Epithermal Gold
GNS Science
Value-Adding to QMAP
GNS Science
Geologic Re -mapping: Ok Tedi, Papua New Guinea
GNS Science
1998 Townsville Cu -Au Project, Ok Tedi Papua
New Guinea:Re-mapping
GNS Science
GNS Science
1998
2014
Townsville Cu -Au Project, Ok Tedi Papua
New Guinea:Re-mapping
GNS Science
12.1% Cu 10.6 g/t Au 161 g/t Ag
9.7%Cu 6.93 g/t Au 131 g/t Ag
New Copper-Gold Discovery
GNS Science
Summary
• Geological maps are a primary data resource – hazards , environmental, minerals research
• Geological maps are highly valued by the exploratio n industry and help de-risk investment decisions
• We can increase levels of exploration investment by making quality geologic maps freely available
• Mapping is relatively cheap with a good return on $ $ – NZ QMAP
• Maps underpin “value-added” GIS studies• Mapping is never done – remapping leads to new
discoveries in mature areas
GNS Science
Vinaka
Kia Ora
GNS Science
Oceana Geological Maps
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