Synchronous vertical and horizontal tectonism at late stages of Archean cratonization and genesis of Hemlo gold deposit, Superior craton, Ontario, Canada

Abstract

Research Article| March 01, 2013 Synchronous vertical and horizontal tectonism at late stages of Archean cratonization and genesis of Hemlo gold deposit, Superior craton, Ontario, Canada Shoufa Lin; Shoufa Lin 1Department of Earth and Environmental Sciences, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada2School of Resources and Environment, Hefei University of Technology, Hefei 230026, P.R. China Search for other works by this author on: GSW Google Scholar Gary P. Beakhouse Gary P. Beakhouse 3Ontario Geological Survey, 933 Ramsey Lake Road, Sudbury, Ontario P3E 6B5, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information Shoufa Lin 1Department of Earth and Environmental Sciences, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada2School of Resources and Environment, Hefei University of Technology, Hefei 230026, P.R. China Gary P. Beakhouse 3Ontario Geological Survey, 933 Ramsey Lake Road, Sudbury, Ontario P3E 6B5, Canada Publisher: Geological Society of America Received: 25 Jul 2012 Revision Received: 28 Sep 2012 Accepted: 01 Oct 2012 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2013 Geological Society of America Geology (2013) 41 (3): 359–362. https://doi.org/10.1130/G33887.1 Article history Received: 25 Jul 2012 Revision Received: 28 Sep 2012 Accepted: 01 Oct 2012 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Shoufa Lin, Gary P. Beakhouse; Synchronous vertical and horizontal tectonism at late stages of Archean cratonization and genesis of Hemlo gold deposit, Superior craton, Ontario, Canada. Geology 2013;; 41 (3): 359–362. doi: https://doi.org/10.1130/G33887.1 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 Hemlo gold deposit (∼700 t Au; northwestern Ontario, Canada) is hosted in a shear zone in the Hemlo greenstone belt, which is a synclinal keel between two granitoid domes. The dome-and-keel structure formed by diapirism and sagduction (vertical tectonism) that was synchronous with regional horizontal shearing (horizontal tectonism). Mineralization occurred during shearing, and mineralizing fluids probably had a magmatic source that is interpreted to be related to syntectonic mantle-derived granodiorite (sanukitoid) intrusions. The gold deposit, the intrusions, and the hosting shear zone all developed within a regime characterized by synchronous vertical and horizontal tectonism. They were all possibly linked to a range of processes associated with the accretionary growth and stabilization of the craton, in particular slab breakoff and the associated extensional orogenic collapse following terrane accretion. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.