Jurassic accretion of Nisling terrane along the western margin of Stikinia, Coast Mountains, northwestern British Columbia

Research Article| March 01, 1993 Jurassic accretion of Nisling terrane along the western margin of Stikinia, Coast Mountains, northwestern British Columbia Lisel Currie; Lisel Currie 1Ottawa-Carleton Geoscience Centre, Ottawa K1S 5B6, Canada Search for other works by this author on: GSW Google Scholar Randall R. Parrish Randall R. Parrish 2Geological Survey of Canada, 601 Booth Street, Ottawa KlA OE8, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information Lisel Currie 1Ottawa-Carleton Geoscience Centre, Ottawa K1S 5B6, Canada Randall R. Parrish 2Geological Survey of Canada, 601 Booth Street, Ottawa KlA OE8, Canada Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1993) 21 (3): 235–238. https://doi.org/10.1130/0091-7613(1993)021<0235:JAONTA>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 Lisel Currie, Randall R. Parrish; Jurassic accretion of Nisling terrane along the western margin of Stikinia, Coast Mountains, northwestern British Columbia. Geology 1993;; 21 (3): 235–238. doi: https://doi.org/10.1130/0091-7613(1993)021<0235:JAONTA>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 A metamorphosed assemblage of continental margin-type strata, termed the Nisling terrane, exists as a narrow terrane sliver in the northern Coast Mountains of British Columbia. It could be a fragment rifted from North America and later accreted, or, alternatively, it could be allochthonous and far traveled. The Nisling terrane is tectonically bounded by younger, oceanic, arc-dominated terranes on both sides—the Alexander terrane to the west and meta-morphosed Paleozoic rocks of Stikinia to the east. The Nisling terrane was accreted to Stikinia along a sinistral transpressive ductile shear zone between 185 and 170 Ma, during or before the accretion of Stikinia to the ancestral margin of North America. Along this tectonic boundary, intense deformation was accompanied by lower amphibolite-facies metamorphism. Previous inferences by other workers that the Nisling-Stikinia accretion occurred in the Triassic are incorrect, as is the supposition that the Nisling terrane formed the depositional basement to Stikinia. Although the Nisling terrane exists for ∼1000 km along strike on the west side of Stikinia, its connection to either North America or another continent remains uncertain and tectonically puzzling. The middle Cretaceous collision of the Nisling-Stikinia terrane composite with the Alexander terrane overprinted the Jurassic deformational features and produced a complex belt of tectonic slivers involving all of these terrane fragments. This content is PDF only. Please click on the PDF icon to access. 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.