Metasomatic Stages and Scapolitization Effects on Chemical Composition of Pasveh Pluton,NW Iran |
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| Authors: | S A Mazhari |
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| Institution: | S A Mazhari Department of Geology,Payame Noor University,P.O.Box 19395-4697,Tehran,Iran S Amini Department of Geology,Tarbiat Moallem University,49 Mofatteh Avenue,Tehran 15614,Iran J Ghalamghash Geological Survey of Iran,P.O.Box 13195-1494,Iran F Bea Department of Mineralogy and Petrology,Fuentenueva Campus,University of Granada,18002 Granada,Spain |
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| Abstract: | Pasveh gabbros are mafic component of a plutonic complex in the northwest Sanandaj-Sirjan Zone.These cumulative rocks are composed of plagioclase and calcic clinopyroxene(Cpx) ,which yield unusually high CaO(>19 wt.%) in whole-rock chemistry.Petrographical and geochemical data suggest that Pasveh gabbros can be divided into two groups:free scapolite and scapolite-bearing gabbros.The second group has higher Na2O,K2O,and P2O5 relative to free scapolite ones and is enriched in LIL(large ion lithophile) and HFS... |
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| Keywords: | Iran Sanandaj-Sirjan Zone Pasveh pluton gabbro metasomatism high Ti Cpx low Ti Cpx amphibole scapolite |
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