Volume 26, Issue 2 (7-2018)                   www.ijcm.ir 2018, 26(2): 301-314 | Back to browse issues page

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Tectonomagmatic characteristics of ophiolitic gabbroids from south Orzuieh (south of Baft, Kerman) ophiolite complex: insights from clinopyroxene chemistry.. www.ijcm.ir. 2018; 26 (2) :301-314
URL: http://ijcm.ir/article-1-1099-en.html
Abstract:   (38 Views)
Mafic and ultramafic layered rocks located in south of Orzuieh (Baft, Kerman province), consist of plagioclase bearing ultramafic rocks (including olivine, orthopyroxene , clinopyroxene and plagioclase), olivine gabbros (including plagioclase, olivine, orthopyroxene and clinopyroxene) and gabbronorites (including plagioclase, orthopyroxene and clinopyroxene and amphibole) and constitute the mafic parts of the Orzuieh colored mélange complex. Mineral chemistry of clinopyroxene show diopside end-member which have Mg# ranging from 0.75 to 0.88. According to geothermobarometric calculations, temperatures change from 783 to 975ºC and pressure conditions vary from 1.4 to 3.6 kbar. Tectono-magmatic considerations show that these clinopyroxenes have been crystallized from tholeiitic to bonintic magmas which have already formed in an arc environment. Therefore, it could be considered that Orzuieh layered ultramafic and mafic rock series are some parts of ophiolitic complexes which occurred in a subduction setting.
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Type of Study: Research | Subject: Special
Received: 2018/07/7 | Accepted: 2018/07/7 | Published: 2018/07/7

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