Paleoproterozoic collisional orogen beneath the western Canada sedimentary basin imaged by Lithoprobe crustal seismic-reflection data

Abstract

Research Article| March 01, 1995 Paleoproterozoic collisional orogen beneath the western Canada sedimentary basin imaged by Lithoprobe crustal seismic-reflection data Gerald M. Ross; Gerald M. Ross 1Geological Survey of Canada, 3303 33rd Street N.W., Calgary, Alberta T2L 2A7, Canada Search for other works by this author on: GSW Google Scholar Bernd Milkereit; Bernd Milkereit 2Geological Survey of Canada, 1 Observatory Crescent, Ottawa, Ontario K1A 0E3, Canada Search for other works by this author on: GSW Google Scholar David Eaton; David Eaton 2Geological Survey of Canada, 1 Observatory Crescent, Ottawa, Ontario K1A 0E3, Canada Search for other works by this author on: GSW Google Scholar Don White; Don White 2Geological Survey of Canada, 1 Observatory Crescent, Ottawa, Ontario K1A 0E3, Canada Search for other works by this author on: GSW Google Scholar Ernest R. Kanasewich; Ernest R. Kanasewich 3Department of Physics, University of Alberta, Edmonton, Alberta T6G 2J1, Canada Search for other works by this author on: GSW Google Scholar Michael J. A. Burianyk Michael J. A. Burianyk 3Department of Physics, University of Alberta, Edmonton, Alberta T6G 2J1, Canada Search for other works by this author on: GSW Google Scholar Geology (1995) 23 (3): 195–199. https://doi.org/10.1130/0091-7613(1995)023<0195:PCOBTW>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 MailTo Tools Icon Tools Get Permissions Search Site Citation Gerald M. Ross, Bernd Milkereit, David Eaton, Don White, Ernest R. Kanasewich, Michael J. A. Burianyk; Paleoproterozoic collisional orogen beneath the western Canada sedimentary basin imaged by Lithoprobe crustal seismic-reflection data. Geology 1995;; 23 (3): 195–199. doi: https://doi.org/10.1130/0091-7613(1995)023<0195:PCOBTW>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 Exceptionally clear images of crustal structure of the Canadian Shield that underlies the western Canada sedimentary basin beneath 3.5–2.2 km of Phanerozoic sedimentary strata have been obtained on a seismic-reflection profile acquired by Lithoprobe. The profile crosses tectonic domains of central Alberta and delineates a major buried orogenic belt of Paleoproterozoic (∼1.8 Ga) age associated with crustal scale thrust imbrication and deflections in the crust-mantle boundary. Available geochronologic data suggest that crustal imbrication observed in the Alberta basement was coeval with that documented in the Trans-Hudson orogen to the east (1.80–1.83 Ga) and implies that a large region of continental crust, extending >1000 km from the western Superior province to the Snowbird tectonic zone, underwent considerable shortening during assembly of this part of the Canadian Shield. 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.