Kisseynew metasedimentary gneiss belt, Trans-Hudson orogen (Canada): Back-arc origin and collisional inversion

Abstract

Research Article| November 01, 1995 Kisseynew metasedimentary gneiss belt, Trans-Hudson orogen (Canada): Back-arc origin and collisional inversion Kevin M. Ansdell; Kevin M. Ansdell 1Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada Search for other works by this author on: GSW Google Scholar Stephen B. Lucas; Stephen B. Lucas 2Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada Search for other works by this author on: GSW Google Scholar Karen Connors; Karen Connors 2Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada Search for other works by this author on: GSW Google Scholar Richard A. Stern Richard A. Stern 2Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information Kevin M. Ansdell 1Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada Stephen B. Lucas 2Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada Karen Connors 2Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada Richard A. Stern 2Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1995) 23 (11): 1039–1043. https://doi.org/10.1130/0091-7613(1995)023<1039:KMGBTH>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 Kevin M. Ansdell, Stephen B. Lucas, Karen Connors, Richard A. Stern; Kisseynew metasedimentary gneiss belt, Trans-Hudson orogen (Canada): Back-arc origin and collisional inversion. Geology 1995;; 23 (11): 1039–1043. doi: https://doi.org/10.1130/0091-7613(1995)023<1039:KMGBTH>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 The Kisseynew metasedimentary gneiss belt (Kisseynew domain), which represents one of the most extensive tectonic segments of the Paleoproterozoic Trans-Hudson orogen in north-central Canada, initially developed in a back-arc setting. It comprises turbidites and continental sandstones, both of which are interlayered with rare volcanic rocks and intruded by plutons. The ages of detrital zircons and crosscutting plutons constrain turbidite sedimentation to 1.855–1.841 Ga, postdating early deformation and metamorphism associated with arc-arc and arc-continent collisions affecting much of the Trans-Hudson orogen. These turbidites are interpreted to have been deposited in a back-arc basin behind a retreating subduction boundary. The Kisseynew domain and its southern flank are marked by 1.84–1.83 Ga magmatic rocks that may be related to subduction of back-arc basin oceanic crust. Collapse of the Kisseynew "basin" by ductile fold-and-thrust deformation began during 1.84–1.83 Ga magmatism and continued through peak metamorphism at ca. 1.820–1.805 Ga. The result was that the high-grade core of the Kisseynew domain was structurally emplaced over adjacent low-grade terranes. The regionally extensive high-temperature and low-pressure metamorphism that characterizes the Kisseynew domain is best explained by thickening and thermal relaxation of basin-fill rocks marked by a geotherm elevated by 1.84–1.83 Ga magmatism. 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.