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Pre-2.8 Ga crust in the Opatica gneiss belt:A potential source of detrital zircons in the Abitibi and Pontiac subprovinces, Superior Province, Canada

1994; Geological Society of America; Volume: 22; Issue: 12 Linguagem: Inglês

10.1130/0091-7613(1994)022 2.3.co;2

1943-2682

W J Davis, Clément Gariépy, E. W. Sawyer,

Geochemistry and Geologic Mapping

Research Article| December 01, 1994 Pre-2.8 Ga crust in the Opatica gneiss belt:A potential source of detrital zircons in the Abitibi and Pontiac subprovinces, Superior Province, Canada W. J. Davis; W. J. Davis 1GEOTOP, Université du Québec à Montréal, case postale 8888, station Centre-ville, Montréal, H3C 3P8, Canada Search for other works by this author on: GSW Google Scholar C. Gariépy; C. Gariépy 1GEOTOP, Université du Québec à Montréal, case postale 8888, station Centre-ville, Montréal, H3C 3P8, Canada Search for other works by this author on: GSW Google Scholar E. W. Sawyer E. W. Sawyer 2Department des sciences appliquées, Université du Québec à Chicoutimi, 555 boulevard de l'Université, Chicoutimi, G7H 2B1, Canada Search for other works by this author on: GSW Google Scholar Geology (1994) 22 (12): 1111–1114. https://doi.org/10.1130/0091-7613(1994)022 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 W. J. Davis, C. Gariépy, E. W. Sawyer; Pre-2.8 Ga crust in the Opatica gneiss belt:A potential source of detrital zircons in the Abitibi and Pontiac subprovinces, Superior Province, Canada. Geology 1994;; 22 (12): 1111–1114. doi: https://doi.org/10.1130/0091-7613(1994)022 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 Ages of detrital zircons in post-2.7 Ga metasedimentary rocks of the southern Abitibi and northern Pontiac subprovinces require that pre-2.8 Ga crust was exposed during or following deformation of the 2.70 and 2.68 Ga, and the belt forms a high-grade crystalline core to a south-vergent mountain belt along the northern margin of the Abitibi subprovince. Erosion of the Opatica and northern Abitibi during thrusting would shed detritus southward in advance of a south-vergent thrust system. The Lac Rodayer complex may be the enigmatic source of ∼2.8 Ga detrital zircons within turbidites of the southern Abitibi and northern Pontiac subprovinces. 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.