Title: Geochemistry And Petrology Of Granophyric Granite Veins Penetrated In The Igneous Intrusive Complex In South Of Qorveh Area, West Iran
Abstract: Qorveh area (west Iran) belongs to the Sanandaj-Sirjan zone. Igneous activity resulted from subduction of Neo-Tethys beneath Iran microplate during Mesozoic and Cenozoic produced several intrusive and extrusive rocks throughout Sanandaj-Sirjan zone that convoluted intrusive complex in south of the study area is one of them. This complex is generally comprised of diorite, gabbro, monzonite, quartz-monzonite and quartz-monzodiorite. Several garnophyric granite veins penetrated into the diorite and gabbro in the complex. These granite veins are metaluminous (A/CNK=0.66-0.9), alkalic and have I-type and A-type granitiod geochemical characteristics. These samples have moderate REE contents (�REE=83-147 ppm), negative Eu anomaly (Eu/Eu * =0.4-0.7), high field strength elements (HFSE) Nb, Ta, Ti… contents (�HFSE=70-130 ppm) and high light rare earth elements to heavy rare earth elements (LREE/HREE) ratios (average 6 ppm). Basis on the mineralogical, petrological and geochemical studies, it is clear that crystal plays an important role in generation of this rock. Also, granite samples possess geochemical signatures of active continental margin (enriched in large ion lithophile elements (LILE) Rb, K, U, Sr, Cs and Th with respect to Nb and Ti) and a post-orogenic geodynamic environment.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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Cited By Count: 2
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