Title: Genesis of Archean komatiites from Munro Township, Ontario: Trace-element evidence
Abstract: Research Article| October 01, 1977 Genesis of Archean komatiites from Munro Township, Ontario: Trace-element evidence Joseph G. Arth; Joseph G. Arth 1U.S. Geological Survey, 929 National Center, Reston, Virginia 22092 Search for other works by this author on: GSW Google Scholar Nicholas T. Arndt; Nicholas T. Arndt 2Geophysical Laboratory, Carnegie Institution, 2801 Upton St. N.W., Washington, D.C. 20008 Search for other works by this author on: GSW Google Scholar Anthony J. Naldrett Anthony J. Naldrett 3Department of Geology, University of Toronto, Toronto M5S 1A1 Search for other works by this author on: GSW Google Scholar Geology (1977) 5 (10): 590–594. https://doi.org/10.1130/0091-7613(1977)5<590:GOAKFM>2.0.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 Joseph G. Arth, Nicholas T. Arndt, Anthony J. Naldrett; Genesis of Archean komatiites from Munro Township, Ontario: Trace-element evidence. Geology 1977;; 5 (10): 590–594. doi: https://doi.org/10.1130/0091-7613(1977)5<590:GOAKFM>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 Trace elements, particularly rare earths, determined in Archean komatiitic and tholeiitic rocks of Munro Township, Ontario, appear mainly to reflect the processes that produced the lavas, rather than the metamorphic processes. Pyroxenitic to basaltic komatiites may have originated by fractional crystallization of peridotitic komatiite liquid or by partial melting of plagioclase peridotite in the mantle. Peridotitic komatiite magmas may be partial melts of a residual mantle assemblage that was depleted in largeion lithophile (LIL) elements, possibly through earlier extraction of liquids. Picritic tholeiites may have originated from melting of garnet peridotite.A multistage melting model may relate both tholeiites and komatiites to a common source, perhaps in a rising mantle diapir. In this model tholeiites would be the first-formed liquids extracted whereas residual mantle might be further melted to produce komatiitic liquids. 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.
Publication Year: 1977
Publication Date: 1977-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 84
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