|Title||Bedrock geology between Thuya and Woodjam creeks, south-central British Columbia NTS 92P/7, 8, 9, 10, 14, 15, 16; 93A/2, 3, 6|
|Author||Schiarizza, P; Israel, S; Heffernan, S; Boulton, A; Bligh, J; Bell, K; Bayliss, S; Macauley, J; Bluemel, B; Zuber, J; Friedman, R M; Orchard, M J; Poulton, T P|
|Source||British Columbia Ministry of Energy, Mines and Petroleum Resources, Open File 2013-05, 2013, 3 sheets|
|Alt Series||Earth Sciences Sector, Contribution Series 20140030|
|Maps||Publication contains 1 map|
|Map Info.||geological, 1:100,000|
|Media||paper; on-line; digital|
|NTS||92P/07; 92P/08; 92P/09; 92P/10; 92P/14; 92P/15; 92P/16; 93A/02; 93A/03; 93A/06|
|Area||Thuya Creek; Woodjam Creek|
|Lat/Long WENS||-121.5000 -120.0000 52.5000 51.2500|
|Subjects||structural geology; stratigraphy; bedrock geology|
|Program||Vancouver Subdivision Operations, GSC Pacific Division|
|Links||Online - En ligne|
|Abstract||The Thuya Creek - Woodjam Creek map area encompasses about 5400 square kilometres, mainly in the Shuswap and Quesnel highlands and adjacent Fraser and Thompson plateaus. The geology is based on
fieldwork conducted between 2000 and 2008, and integrates, with revisions, the interpretations presented in Open File maps 2002-4 (Nehalliston Plateau), 2002-15 (Clearwater-Bowers Lake), 2006-8 (Canim Lake), 2007-3 (Hendrix Lake), 2008-5 (Timothy
Lake), and 2009-3 (Murphy Lake). |
The area is underlain mainly by Mesozoic rocks of the Quesnel magmatic arc, including volcanic, volcaniclastic, and sedimentary rocks of the Nicola Group, which is separated into several regionally significant
subdivisions. Associated plutonic rocks include a Late Triassic monzodiorite suite, Late Triassic to Early Jurassic calc-alkaline rocks of the Takomkane and Thuya batholiths, Early Jurassic Alaskan-type ultramafic-mafic complexes, and small stocks of
Early Jurassic diorite, monzonite and quartz monzonite. The map area also includes Early Cretaceous granitic plutons, Eocene volcanic rocks of the Kamloops Group, Neogene basalt of the Chilcotin Group, and small exposures of Quaternary basalt that
are part of the Wells Gray volcanic field.
Important mineral occurrences include porphyry Cu-Au deposits associated with the Late Triassic monzodiorite suite, porphyry Cu-Mo-Au deposits associated with Early Jurassic calc-alkaline plutons, Cu-Au
skarns associated with Early Jurassic diorite, and Mo-W deposits associated with Early Cretaceous granitic plutons.
|Summary||(Plain Language Summary, not published)|
This map area encompasses about 5400 square kilometres, mainly in the Shuswap and Quesnel highlands and adjacent Fraser and Thompson plateaus. The area
is underlain mainly by Mesozoic rocks of the Quesnel magmatic arc, including volcanic, volcaniclastic, and sedimentary rocks of the Nicola Group, and plutonic rocks of various ages. Important mineral occurrences include copper, gold, and molybdenum.
Four sheets show the geology, mineral occurrences, geochemistry, and age constraints provided by both fossils and isotopic ages.