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TitleThe thickness of Neogene and Quaternary cover across the central Interior Plateau, British Columbia: analysis of water-well drill records and implications for mineral exploration potential
AuthorAndrews, G D M; Plouffe, A; Ferbey, T; Russell, J K; Brown, S R; Anderson, R G
SourceCanadian Journal of Earth Sciences vol. 48, no. 6, 2011 p. 973-986, (Open Access)
Alt SeriesEarth Sciences Sector, Contribution Series 20100036
PublisherCanadian Science Publishing
Mediapaper; on-line; digital
File formatpdf
ProvinceBritish Columbia
NTS92N; 92O; 92P; 93A; 93B; 93C; 93F; 93G; 93H; 93I; 93J; 93K
AreaVanderhoof; Prince George; Quesnel; Williams Lake; 100 Mile House
Lat/Long WENS-126.0000 -120.0000 55.0000 51.0000
Subjectsmineral exploration; water well records; drift deposits; geophysical exploration techniques; Quaternary
Illustrationslocation maps; tables; diagrams; geological sketch maps; geological sketch maps
ProgramSouthern Cordillera TGI-3, Targeted Geoscience Initiative (TGI-3), 2005-2010
AbstractAnalysis of over 10 000 water-well records has been used to produce new depth-to-bedrock maps for areas around five cities on the central Interior Plateau of central British Columbia: 100 Mile House, Prince George, Quesnel, Vanderhoof, and Williams Lake. Hitherto, exploration for mineral and hydrocarbon resources has been hampered by a lack of basic knowledge of the thickness of Neogene and Quaternary lithologies. Interpretation of these new maps provides first-order constraints on the localization of thick drift in pre-Late Wisconsinan bedrock paleovalleys, some of which are now buried. Basalt lavas of the Chilcotin Group are restricted to erosional remnants of previously extensive sheets emplaced onto an older peneplain. Our results confirm that the Neogene and Quaternary cover is primarily controlled by paleotopography and is generally thin and patchy across much of the region. Increased understanding of the three-dimensional distribution of cover produces a corresponding increase in the utility of geological, geochemical, and geophysical exploration techniques, and a reduction in the risk for future mineral exploration activities, especially when combined with more sophisticated data sets.