Images of a lower-crustal oceanic slab: Direct evidence for tectonic accretion in the Archean western Superior province

Research Article| November 01, 2003 Images of a lower-crustal oceanic slab: Direct evidence for tectonic accretion in the Archean western Superior province D.J. White; D.J. White 1Geological Survey of Canada, 615 Booth Street, Ottawa, Ontario K1A 0E9, Canada Search for other works by this author on: GSW Google Scholar G. Musacchio; G. Musacchio 2Department of Geological Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada Search for other works by this author on: GSW Google Scholar H.H. Helmstaedt; H.H. Helmstaedt 2Department of Geological Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada Search for other works by this author on: GSW Google Scholar R.M. Harrap; R.M. Harrap 2Department of Geological Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada Search for other works by this author on: GSW Google Scholar P.C. Thurston; P.C. Thurston 3Ontario Geological Survey, 933 Ramsay Lake Road, Sudbury, Ontario P3E 6B5, Canada Search for other works by this author on: GSW Google Scholar A. van der Velden; A. van der Velden 4Department of Geology and Geophysics, University of Calgary, Calgary, Alberta T2N 1N4, Canada Search for other works by this author on: GSW Google Scholar K. Hall K. Hall 4Department of Geology and Geophysics, University of Calgary, Calgary, Alberta T2N 1N4, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information D.J. White 1Geological Survey of Canada, 615 Booth Street, Ottawa, Ontario K1A 0E9, Canada G. Musacchio 2Department of Geological Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada H.H. Helmstaedt 2Department of Geological Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada R.M. Harrap 2Department of Geological Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada P.C. Thurston 3Ontario Geological Survey, 933 Ramsay Lake Road, Sudbury, Ontario P3E 6B5, Canada A. van der Velden 4Department of Geology and Geophysics, University of Calgary, Calgary, Alberta T2N 1N4, Canada K. Hall 4Department of Geology and Geophysics, University of Calgary, Calgary, Alberta T2N 1N4, Canada Publisher: Geological Society of America Received: 11 Jul 2003 Revision Received: 06 Aug 2003 Accepted: 14 Aug 2003 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2003) 31 (11): 997–1000. https://doi.org/10.1130/G20014.1 Article history Received: 11 Jul 2003 Revision Received: 06 Aug 2003 Accepted: 14 Aug 2003 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation D.J. White, G. Musacchio, H.H. Helmstaedt, R.M. Harrap, P.C. Thurston, A. van der Velden, K. Hall; Images of a lower-crustal oceanic slab: Direct evidence for tectonic accretion in the Archean western Superior province. Geology 2003;; 31 (11): 997–1000. doi: https://doi.org/10.1130/G20014.1 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 Archean western Superior province in Canada is the type area for proposed Archean plate tectonics. Seismic images from this region provide direct evidence for assembly of the craton by terrane accretion and for a large slab of remnant oceanic crust preserved at the base of the crust. This slab, with inferred garnet amphibolite composition, adds a critical piece of evidence to previous suggestions that Archean subduction was at a shallow angle and that some Neoarchean tonalite-trondhjemite-granodiorite suites, distinct from most modern-day suprasubduction magmas, are melts primarily derived directly from subducted slabs. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.