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dc.contributor.authorTahmasbi, Zahra
dc.contributor.authorCastro Dorado, Antonio 
dc.contributor.authorKhalili, Mahmud
dc.contributor.authorKhalaji, A. Ahmadi
dc.contributor.authorRosa Díaz, Jesús de la 
dc.date.accessioned2012-05-29T08:32:26Z
dc.date.available2012-05-29T08:32:26Z
dc.date.issued2010
dc.identifier.citationTahmasbi, Z., Castro Dorado, A., Khalili, M., Khalaji, A. A., Rosa Díaz, J.D. de la: "Petrologic and geochemical constraints on the origin of Astaneh pluton, Zagros orogenic belt, Iran". Journal of Asian Earth Sciences. Vol. 39, n. 3, p. 81-96 (2010). ISSN 1367-9120en_US
dc.identifier.issn1367-9120
dc.identifier.urihttp://hdl.handle.net/10272/5664
dc.description.abstractThe Astaneh plutonic complex consists of a series of granitoid rocks ranging in composition from quartzdiorites to monzogranites and evolving from metaluminous to weakly peraluminous compositions. They belong to the high-K calc-alkaline series, having features of typical Andean-type cordilleran granitoids. Trace and rare-earth elements distribution patterns for the Astaneh rocks indicate a distinctive depletion in Nb, Sr, Ba, P and Ti relative to other trace elements and a greater enrichment in LILE compared to HFSE. These geochemical characteristics suggest the participation of an important recycled (sedimentary?) component in the source region of the granitoids. They have Sr initial isotopic ratios in the range 0.7078–0.7084 and negative eNd values of 5.39 to 6.13 for a time of generation of 170 Ma. There is a genetic link between quartz-diorites and granodiorites, the dominant rock types of the Astabeh intrusion. Direct melting or fractionation from a diorite source is very unlike. It is proposed that the Astaneh parental Qtd-diorite magmas were produced by the partial melting of a mixed source, dominantly composed of amphibolites and sediments, that was formed during subduction of Neo-Tethyan oceanic crust below the Iranian microcontinent during Middle Jurassic times.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.otherIran
dc.subject.otherZagros
dc.subject.otherSanandaj–Sirjan
dc.subject.otherGranodioriteeng
dc.subject.otherEnclaveseng
dc.subject.otherNeo-tethyseng
dc.subject.otherPetrologíaspa
dc.subject.otherGranitospa
dc.subject.otherGeología
dc.titlePetrologic and geochemical constraints on the origin of Astaneh pluton, Zagros orogenic belt, Iranen_US
dc.typeinfo:eu-repo/semantics/articleen_US
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.jseaes.2010.03.001en_US
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess


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