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TitleMineral potential modelling for the Greater Nahanni Ecosystem using GIS based analytical methods
AuthorHarris, J R; Lemkow, D; Jefferson, C; Wright, D; Falck, H
SourceProgress in geomathematics; by Bonham-Carter, G (ed.); Cheng, Q (ed.); 2008 p. 227-269
Alt SeriesGeological Survey of Canada, Contribution Series 20070576
PublisherSpringer-Verlag (Berlin/Heidelberg, Germany)
RelatedThis publication is contained in Progress in geomathematics
RelatedThis publication is reprinted from Mineral potential modelling for the Greater Nahanni Ecosystem using GIS based analytical methods
ProvinceNorthwest Territories
NTS95B/13; 95B/14; 95C/13; 95C/14; 95C/15; 95C/16; 95D/15; 95D/16; 95E; 95F; 95G/03; 95G/04; 95G/05; 95G/06; 95G/11; 95G/12; 95G/13; 95G/14; 95K/04; 95L/01; 95L/02; 95L/03; 95L/04; 95L/05; 95L/06; 95L/07; 95L/11; 95L/12; 95L/13; 95L/14; 105H/09; 105H/15; 105H/16; 105I
AreaNahanni National Park; Nahanni River; Mackenzie Mountains; Logan Mountains; Selwyn Mountains; Meilleur River Embayment; Selena Creek; Prairie Creek
Lat/Long WENS-129.5000 -123.0000 63.0000 60.7500
Subjectseconomic geology; structural geology; geophysics; geochemistry; mineralization; mineral occurrences; sedimentary ore deposits; modelling; models; stratiform deposits; carbonate rocks; sulphide deposits; lead; zinc; silver; structural features; faults; Greater Nahanni Ecosystem; Cantung mine; Broken Skull Fault; Tay River Plutonic Suite; O'Grady Batholith; Mount Hamilton Pluton; geographic information system; Mesozoic; Cretaceous; Mississippian; Pennsylvanian; Devonian; Jurassic; Triassic; Paleozoic; Carboniferous; Silurian; Ordovician; Cambrian; Precambrian; Proterozoic; Permian; Quaternary; Cenozoic
Illustrationssketch maps; tables; flow charts; graphs; models
ProgramNorthern Resources Development Program
ProgramMineral and Energy Resource Assessment (MERA)
ProgramParks Canada, Funding Program
AbstractMineral potential within the Greater Nahanni Ecosystem was modelled in a Geographic Information System (GIS) for four different deposit models: 1. SEDEX (stratiform shale-hosted sedimentary exhalative Zn-Pb-Ag), 2. 'Carbonate-Fault' (carbonate-hosted zinc-lead-silver associated with major faults), 3. 'Intrusion-Related' (includes skarn, rare metals and gemstones), and 4. Carlin-Type gold as lode and/or derived placer deposits. This mineral potential modelling study integrates data collected during the Nahanni Mineral and Energy Resource Assessment (MERA). The results have contributed to the process of determining the geographic boundaries of the proposed expansion of the Nahanni National Park Reserve. Four mineral potential maps were produced (one for each model) using a data modified knowledge-driven approach. A weighting scheme based on integrated mineral deposit and regional geological knowledge was derived for the various evidence maps for each deposit model. The four potential maps were then combined into a final potential map using 2 algorithms, an additive operator and a maximum operator. Prediction plots of the four models show that partial data sets provide reasonable predictions of the remaining known mineral prospects, occurrences and deposits. Hydrocarbon potential from Nahanni MERA 1 was added to the final potential map to ensure that both mineral and energy potential data were incorporated into the park configuration modelling.

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