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- W2045681062 abstract "Research Article| March 01, 1985 Magmatic ‘metasomatism’ in peridotites from the Zambales ophiolite Cynthia A. Evans Cynthia A. Evans 1Department of Geology, Colgate University Hamilton, New York 13346 Search for other works by this author on: GSW Google Scholar Geology (1985) 13 (3): 166–169. https://doi.org/10.1130/0091-7613(1985)13<166:MMIPFT>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 Cynthia A. Evans; Magmatic ‘metasomatism’ in peridotites from the Zambales ophiolite. Geology 1985;; 13 (3): 166–169. doi: https://doi.org/10.1130/0091-7613(1985)13<166:MMIPFT>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 Evidence for variable amounts of melt-induced metasomatism in upper-mantle peridotites has been observed in the ultramafic section of the Zambales Range ophiolite, Luzon, Republic of the Philippines. These peridotites are locally cut by mafic dikes that in some places visibly ooze into the host peridotite. The mafic silicate magma invaded the peridotite along grain boundaries and crystallized as poikilitic plagioclase and clinopyroxene.Compositional data indicate that the mafic material reacted with the peridotite. Mineral compositions in the mafic dikes are distinct from those in the surrounding peridotite. The compositions of residual olivine and orthopyroxene in the peridotite change with the amount of mafic magma within the peridotite. Fe-Mg exchange predominates; the residual olivine and orthopyroxene in the peridotite are enriched in Fe. Large relative enrichments in other magmaphilic elements (Na, Ti, AT) are also evident. Mafic liquid in transit through the upper mantle may act as a metasomatic agent, locally enriching the peridotite through which it passes and producing small-scale compositional differences in rocks that otherwise have remarkably uniform compositions. 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." @default.
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- W2045681062 title "Magmatic ‘metasomatism’ in peridotites from the Zambales ophiolite" @default.
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