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Bowser basin, northern British Columbia: Constraints on the timing of initial subsidence and Stikinia-North America terrane interactions

1992; Geological Society of America; Volume: 20; Issue: 12 Linguagem: Inglês

10.1130/0091-7613(1992)020 2.3.co;2

1943-2682

B D Ricketts, C A Evenchick, Robert Anderson, Donald C. Murphy,

Geology and Paleoclimatology Research

Research Article| December 01, 1992 Bowser basin, northern British Columbia: Constraints on the timing of initial subsidence and Stikinia-North America terrane interactions Brian D. Ricketts; Brian D. Ricketts 1Geological Survey of Canada, 100 West Pender Street, Vancouver, British Columbia V6B 1R8, Canada Search for other works by this author on: GSW Google Scholar Carol A. Evenchick; Carol A. Evenchick 1Geological Survey of Canada, 100 West Pender Street, Vancouver, British Columbia V6B 1R8, Canada Search for other works by this author on: GSW Google Scholar Robert G. Anderson; Robert G. Anderson 1Geological Survey of Canada, 100 West Pender Street, Vancouver, British Columbia V6B 1R8, Canada Search for other works by this author on: GSW Google Scholar Donald C. Murphy Donald C. Murphy 2Canada Yukon Geoscience Office, Box 2073 (F3), Whitehorse, Yukon Y1A 2C6, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information Brian D. Ricketts 1Geological Survey of Canada, 100 West Pender Street, Vancouver, British Columbia V6B 1R8, Canada Carol A. Evenchick 1Geological Survey of Canada, 100 West Pender Street, Vancouver, British Columbia V6B 1R8, Canada Robert G. Anderson 1Geological Survey of Canada, 100 West Pender Street, Vancouver, British Columbia V6B 1R8, Canada Donald C. Murphy 2Canada Yukon Geoscience Office, Box 2073 (F3), Whitehorse, Yukon Y1A 2C6, Canada Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1992) 20 (12): 1119–1122. https://doi.org/10.1130/0091-7613(1992)020 2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Brian D. Ricketts, Carol A. Evenchick, Robert G. Anderson, Donald C. Murphy; Bowser basin, northern British Columbia: Constraints on the timing of initial subsidence and Stikinia-North America terrane interactions. Geology 1992;; 20 (12): 1119–1122. doi: https://doi.org/10.1130/0091-7613(1992)020 2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Clastic strata composing the northern Bowser basin record the accretion of Stikinia to the composite western edge of the North American plate (Cache Creek-Quesnellia-Slide Mountain-Kootenay North America) in early Middle Jurassic time and the concomitant demise of the intervening Cache Creek ocean. Initial flexural subsidence of the northern Bowser basin, resulting from thrust loading of Cache Creek terrane on Stikinia, is represented by an organic-rich shale of Aalenian age (the Abou Formation of the Spatsizi Group). Coarse-grained sediment first appeared in early Bajocian time following uplift and subaerial exposure of Cache Creek rocks in the upper plate. Thus, the inception of the Bowser basin was Aalenian, rather than Bajocian, as believed by earlier workers. Aalenian southwest-vergent thrusting at the composite western edge of North America is also known from southern British Columbia, a coincidence that implicates collision with Stikinia in the south as a cause of that deformation. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.