مقاله


کد مقاله : 13980416190619

عنوان مقاله : Late Cretaceous Island-arc subduction magmatism in northern edge of central Iran, SW Sabzevar

نشریه شماره : 49 Spring 2019

مشاهده شده : 165

فایل های مقاله :


نویسندگان

  نام و نام خانوادگی پست الکترونیک مرتبه علمی مدرک تحصیلی مسئول
1 Zakieh Kazemi Kazemi@yahoo.com Post Graduate Student M.A
2 Habibollah Ghasemi h-ghasemi@shahroodut.ac.ir Professor PhD
3 Fardin Mousivand fmousivand@yahoo.com Associate Professor PhD
4 Wilyam Griffin Griffin@yahoo.com Professor PhD

چکیده مقاله

A thick sequence of Late Cretaceous volcano-sedimentary rocks crops out on the northern margin of Central Iran, in the southwest of the Sabzevar. The igneous rocks include extrusions (trachy-andesite, dacite and rhyolite) and shallow depth intrusions (gabbro, gabbrodiorite, diorite and granite). These igneous rocks have geochemical signatures of magmatic rocks of island-arc subduction zones and plot within field in different tectonic setting discrimination diagrams. The parental magma of these rocks has island arc tholeiitic nature and was produced via partial melting of a depleted spinel lherzolite mantle source during closing of the Sabzevar Neo-Tethyan oceanic basin in the Late Cretaceous. This depleted mantle source was affected by the metasomatic fluids released from dehydration of the Neo-Tethys subducted oceanic slab.