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TitleDetailed outcrop measured sections of the Eocene White Lake Formation, southern Okanagan Valley, British Columbia
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorHamblin, A P
SourceGeological Survey of Canada, Open File 6857, 2011, 18 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
File formatpdf
ProvinceBritish Columbia
NTS82E/10; 82E/11; 82E/12; 82E/13; 82E/14; 82E/15; 82L/02; 82L/03; 82L/04; 92H/09; 92H/11; 92H/15; 92H/16; 92I/01; 92I/02
AreaOkanagan Valley; Lake Okanagan
Lat/Long WENS-121.0000 -118.5000 50.2500 49.5000
Subjectsstratigraphy; sedimentology; sedimentary rocks; sandstones; conglomerates; siltstones; mudstones; sedimentary facies; volcanic rocks; breccias; aquifers; groundwater; groundwater regimes; hydrocarbon potential; mineral potential; coal; White Lake Formation; Okanagan Basin; Cenozoic; Tertiary
Illustrationslocation maps; stratigraphic columns
ProgramGroundwater Geoscience, Aquifer Assessment & support to mapping
Released2011 06 13
AbstractThe sedimentology of the Tertiary White Lake Formation of the Okanagan Valley of southern British Columbia has never been seriously studied, and is currently poorly-understood. For this preliminary study, three long outcrops were described in detail to provide an initial view of these strata. Aside from minor hydrocarbon and coal exploration in the 20th C, little is known of the resource potential or groundwater potential, and these strata must be viewed as frontier prospects. However, the occurrences are located in an area of quickly increasing population and water use, near important markets. The currently fault-bounded Okanagan Basin is narrow and elongate, geologically complex and the potential is poorly constrained. A relatively high regional geothermal gradient, abundant sandstone/conglomerate potential reservoir/aquifer facies and the location near populous markets suggest significant potential. Facies observed in outcrop include 1) volcanic breccia debris flow conglomerate, 2) high energy braided fluvial conglomerate to pebbly sandstone, 3) fluvial sandstone, 4) pedogenically-altered overbank sandy siltstone, 5) pond/marsh carbonaceous mudstone, and 6) lahar sandflow deposits. Facies 2 and 3 represent potential hydrocarbon reservoir/groundwater aquifer facies. Further progress in analysis and understanding will require concerted geological and geophysical field work, and several stratigraphic test wells.

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