Geometric test for Late Cretaceous-Paleogene intracontinental transform faulting in the Canadian Cordillera

Abstract

Research Article| June 01, 1986 Geometric test for Late Cretaceous-Paleogene intracontinental transform faulting in the Canadian Cordillera Raymond A. Price; Raymond A. Price 1Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A OE8, Canada Search for other works by this author on: GSW Google Scholar Dugald M. Carmichael Dugald M. Carmichael 2Department of Geological Sciences, Queen's University, Kingston, Ontario K7L 3M6, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information Raymond A. Price 1Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A OE8, Canada Dugald M. Carmichael 2Department of Geological Sciences, Queen's University, Kingston, Ontario K7L 3M6, Canada Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1986) 14 (6): 468–471. https://doi.org/10.1130/0091-7613(1986)14<468:GTFLCI>2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Raymond A. Price, Dugald M. Carmichael; Geometric test for Late Cretaceous-Paleogene intracontinental transform faulting in the Canadian Cordillera. Geology 1986;; 14 (6): 468–471. doi: https://doi.org/10.1130/0091-7613(1986)14<468:GTFLCI>2.0.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 The Tintina trench-northern Rocky Mountain trench (TT-NRMT) fault zone and the Fraser River-Straight Creek (FR-SC) fault zone are separate, en echelon, concentric, small-circle fault segments of a composite intracontinental transform fault zone more than 2500 km long that cuts diagonally across the Canadian Cordillera, from the outboard part of a tectonic collage of accreted foreign terranes in the south into the North American preaccretionary continental margin in the north. Most of the 450 km of right-hand slip on the TT-NRMT fault zone was transformed southward during the Late Cretaceous and Paleocene into oblique convergence in the southern Canadian Rockies; the remainder, probably comprising less than 100 km, was transformed southwestward during early and middle Eocene time via a zone of distributed shear and east-west crustal stretching into right-hand slip on the en echelon FR-SC fault zone. These interpretations, based on regional systematic mapping of geologic structures, are in conflict with interpretations of paleomagnetic measurements that call for more than 1000 km of post-mid-Cretaceous, right-hand displacement along the general locus of the TT-NRMT fault zone, involving foreign terranes and the parts of North America to which they had been accreted. This paradox must be resolved. 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.