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TitleGeochemistry of glacial sediments of the Bonaparte Lake map area (NTS 92P), south central British Columbia
AuthorPlouffe, A; Bednarski, J M; Huscroft, CA; Anderson, R G; McCuaig, S J
SourceGeological Survey of Canada, Open File 6440, 2010, 44 pages; 1 CD-ROM, (Open Access)
LinksCanadian Database of Geochemical Surveys, downloadable files
LinksBanque de données de levés géochimiques du Canada, fichiers téléchargeables
PublisherNatural Resources Canada
Documentopen file
MediaCD-ROM; digital; on-line
RelatedThis publication is related to Spirito, W A; McClenaghan, M B; Plouffe, A; McMartin, I; Campbell, J E; Paulen, R C; Garrett, R G; Hall, G E M; (2011). Till sampling and analytical protocols for GEM Projects: from field to archive, Geological Survey of Canada, Open File 6850
File formatreadme
File formatpdf; xls; txt
ProvinceBritish Columbia
AreaBonaparte Lake
Lat/Long WENS-122.0000 -120.0000 52.0000 51.0000
Subjectssurficial geology/geomorphology; economic geology; geochemistry; ice flow; ice retreat; ice movement directions; drift prospecting; drift deposits; glacial features; glacial deposits; glaciofluvial deposits; tills; lithology; glaciation; mineralization; mineral occurrences; mineral potential; gold; bedrock geology; base metals; silts; clays; geochemical analyses; silver geochemistry; arsenic geochemistry; gold geochemistry; cadmium geochemistry; cesium geochemistry; chromium geochemistry; copper geochemistry; europium; mercury geochemistry; potassium geochemistry; lutetium geochemistry; molybdenum geochemistry; sodium geochemistry; niobium geochemistry; nickel geochemistry; lead geochemistry; strontium geochemistry; tantalum geochemistry; terbium geochemistry; thorium geochemistry; uranium geochemistry; zinc geochemistry; Quaternary; Cenozoic
Illustrationslocation maps; photographs; flow charts; tables
ProgramMountain Pine Beetle, Geoscience for Mountain Pine Beetle Response
Released2010 01 18 (12:00)
AbstractA total of 936 till and 14 glaciofluvial sediment samples were collected within the Bonaparte Lake map area of south central British Columbia with the objective of defining new potential areas for mineralization in bedrock. The clay and silt plus clay-sized fractions, along with the heavy mineral concentrates from these samples were submitted for geochemical analyses. Till composition is directly influenced by the underlying bedrock geology and ice-flow history of the last glaciation (Late Wisconsinan Fraser Glaciation). High concentrations of gold in till confirms that there is a high mineral potential for gold over the bedrock of the Quesnel Terrane and associated Mesozoic intrusive rocks which underlie a large part of the map area. Some of the high gold levels in till are not associated to known gold occurrences within the bedrock and therefore, are thought to reflect the presence of unknown mineralized zones. Base metal levels are high in till sampled above the Quesnel, Slide Mountain and Kootenay terranes. These results confirm the high potential for base metals in these geological terranes. High molybdenum levels were measured in till near the contact zone between Nicola Group bedrock and the Slide Mountain Terrane. This is an area where no molybdenum mineralization was previously reported and therefore, could be related to unknown bedrock mineralization. Rare earth elements, thorium and uranium levels in till are elevated in the region of the Early Cretaceous Raft Batholith. The distribution of these elements in till was influenced by glacial dispersal to the southwest during the advance of glaciers into the area. The small number of glaciofluvial sediment samples limits an interpretation of their regional composition. Results of the geochemical analyses of the glaciofluvial sediment samples are herein provided for comparison purposes only.