Geologic evolution of the Late Archean Abitibi greenstone belt of Canada

John Ludden,Claude Hubert

doi:10.1130/0091-7613(1986)14<707:geotla>2.0.co;2

Abstract

Research Article| August 01, 1986 Geologic evolution of the Late Archean Abitibi greenstone belt of Canada John Ludden; John Ludden 1Département de Géologie, Université de Montréal, C.P. 6128, Succ. A, Montréal, Québec H3C 3J7, Canada Search for other works by this author on: GSW Google Scholar Claude Hubert Claude Hubert 1Département de Géologie, Université de Montréal, C.P. 6128, Succ. A, Montréal, Québec H3C 3J7, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information John Ludden 1Département de Géologie, Université de Montréal, C.P. 6128, Succ. A, Montréal, Québec H3C 3J7, Canada Claude Hubert 1Département de Géologie, Université de Montréal, C.P. 6128, Succ. A, Montréal, Québec H3C 3J7, Canada Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1986) 14 (8): 707–711. https://doi.org/10.1130/0091-7613(1986)14<707:GEOTLA>2.0.CO;2 Article history First Online: 01 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 John Ludden, Claude Hubert; Geologic evolution of the Late Archean Abitibi greenstone belt of Canada. Geology 1986;; 14 (8): 707–711. doi: https://doi.org/10.1130/0091-7613(1986)14<707:GEOTLA>2.0.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 southern volcanic zone (SVZ) of the Late Archean Abitibi belt of the Superior province of Canada is dominated by komatiitic to tholeiitic volcanic plateaus and large, bimodal, mafic-felsic volcanic centers. These volcanic rocks were erupted between about 2717 and 2700 Ma in a series of rift basins that formed as a result of wrench-fault tectonics. They overlie and juxtapose a volcano-plutonic assemblage characterized in the northern Abitibi belt. The age of the assemblage is about 2720 Ma or older, and it comprises basaltic to andesitic and dacitic subaqueous massive volcanics, cored by comagmatic sills and layered anorthositic complexes and overlain by felsic pyroclastic rocks that were comagmatic with the emplacement of tonalitic plutons at 2717 ± 2 Ma.A tectonic model is proposed in which the SVZ formed in a series of rift basins that dissected an earlier formed volcanic arc. Comparisons are made with rift environments that have been postulated for Phanerozoic areas such as the Hokuroko basin of Japan, the Taupo volcanic zone of New Zealand, and the Sumatra and Nicaragua arcs. 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.

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