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TitleSurficial geology, spectral-reflectance characteristics, and their influence on hyperspectral imaging as a drift-prospecting technique for kimberlite in the Diavik diamond mine area, Northwest Territories
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AuthorKerr, D; Budkewitsch, P; Bryan, D; Knight, R; Kjarsgaard, B
SourceGeological Survey of Canada, Current Research (Online) no. 2002-C4, 2002, 10 pages, https://doi.org/10.4095/213167
Year2002
PublisherNatural Resources Canada
Documentserial
Lang.English
Mediapaper; on-line; digital
RelatedThis publication is contained in Geological Survey of Canada; Geological Survey of Canada; (2002). Current Research 2002, winter release, Geological Survey of Canada, Current Research no. 2002
File formatpdf (Adobe Acrobat Reader)
ProvinceNorthwest Territories
NTS76C; 76D
AreaLac de Gras
Lat/Long WENS-112.0000 -108.0000 65.0000 64.0000
Subjectssurficial geology/geomorphology; economic geology; kimberlites; pipes; diamond; indicator elements; drift deposits; glacial deposits; tills; reflectance; bedrock geology; glacial history; remote sensing; Quaternary
Illustrationssketch maps; graphs; tables; photographs
Image
Released2002 02 15
AbstractNumerous kimberlite pipes have been discovered in the Lac de Gras area, but detection of new pipes is proving more and more difficult in areas characterized by thick overburden cover and few kimberlite indicator minerals in till. This paper summarizes the surficial geology and provides preliminary analyses of the spectral-reflectance characteristics of kimberlite, till, and bedrock for kimberlite exploration in the Diavik mine area. Proglacial sediments deposited prior to glaciation may protect the kimberlite from glacial erosion and therefore no kimberlitic debris is produced. Field and laboratory spectrophotometer measurements were made of bedrock, till, and kimberlite material to document their reflectance properties. Fourteen samples from till of varied thicknesses were tested and all have relatively similar reflectance char-acteristics. However, significant differences exist in the spectral-reflectance characteristics of the till andkimberlite material in the 400 to 2500 nm range.
GEOSCAN ID213167