Genesis of the two main types of peraluminous granitoids 论文

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Research Article| April 01, 1996 Genesis of the two main types of peraluminous granitoids Bernard Barbarin Bernard Barbarin 1Laboratoire de Pétrographie-Volcanologie, Université de Paris-Sud and URA 1369 CNRS, Bâtiment 504, F-91405 Orsay Cedex, France Search for other works by this author on: GSW Google Scholar Geology (1996) 24 (4): 295–298. https://doi.org/10.1130/0091-7613(1996)024<0295:GOTTMT>2.3.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 Bernard Barbarin; Genesis of the two main types of peraluminous granitoids. Geology 1996;; 24 (4): 295–298. doi: https://doi.org/10.1130/0091-7613(1996)024<0295:GOTTMT>2.3.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 Two-mica monzogranites to leucogranites and biotite-rich, cordierite-bearing tonalites to monzogranites form two distinct groups of peraluminous granitoids. They can be distinguished by mineral and rock associations and by the variation of their peraluminosity during differentiation. Except for the rare muscovite-bearing granitoids produced by extreme fractionation or local contamination of metaluminous magmas, the majority of peraluminous granitoids are produced by partial melting of crustal rocks. Production of either muscovite-bearing granites or biotite-rich, cordierite-bearing granitoids does not depend only on the nature of the sources, but is also controlled by the physical parameters of partial melting and consequently by the way anatexis of a thickened crust is enhanced. Biotite-rich, cordierite-bearing granitoids are generated where mantle-derived magmas are injected into or have underplated crustal rocks; two-mica granites are generated where thickened crust is affected by major crustal shears or thrusts. Correlations between differentiation and peraluminosity indicate the dominant role of either restite unmixing or fractional crystallization in the production and evolution of the various types of peraluminous granitoids. 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.