Petrogenesis of pillow lavas based on mineralogical and geochemical data in the eastern part of Sabzevar ophiolite

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REZAEI ZAHRA; NOGHREIAN MOUSA; SACCANI EMILIO

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Journal: Iranian Journal of Crystallography and Mineralogy Year:2019 | Volume:27 | Issue:3 Page(s): 609-620

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Title

Petrogenesis of pillow lavas based on mineralogical and geochemical data in the eastern part of Sabzevar ophiolite

Author(s)

REZAEI ZAHRA | NOGHREIAN MOUSA | SACCANI EMILIO | Issue Writer Certificate

Keywords

Sabzevar ophioliteQ2

pillow lavaQ2

mineral chemistryQ1

MesozoicQ1

northeast IranQ1

Abstract

Sabzevar ophiolitic pillow lavas contain variolitic, porphyritic with microlitic matrix, intersertal and amygdaloidal textures and include plagioclase, clinopyroxene (augite-diopside), olivine, amphibole (magnesiohastingsite) and opaque minerals. The chemical composition of clinopyroxenes show a calc-alkaline magmatic series and a tectonic environment within plate alkaline basalts. Geochemically, these rocks are divided into two groups. Group 1 is basically calc-alkaline andesite with low TiO2 and group 2 is alkali basalt with high TiO2. N-MORB normalized trace elements diagram shows that group 1 is enriched in Th, U, La and depletion in Ta, Nb, Ti and group 2 is enriched in Th, Ta and Nb. Calc-alkaline rocks have produced in a subducted tectonic environment by a continental crust and erupted southwards on the Turan plate. In contrast, alkaline rocks formed within plate oceanic and then tectonically accreted in the forearc setting.

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APA: Copy

REZAEI, ZAHRA, NOGHREIAN, MOUSA, & SACCANI, EMILIO. (2019). Petrogenesis of pillow lavas based on mineralogical and geochemical data in the eastern part of Sabzevar ophiolite. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 27(3 ), 609-620. SID. https://sid.ir/paper/3957/en

Vancouver: Copy

REZAEI ZAHRA, NOGHREIAN MOUSA, SACCANI EMILIO. Petrogenesis of pillow lavas based on mineralogical and geochemical data in the eastern part of Sabzevar ophiolite. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY[Internet]. 2019;27(3 ):609-620. Available from: https://sid.ir/paper/3957/en

IEEE: Copy

ZAHRA REZAEI, MOUSA NOGHREIAN, and EMILIO SACCANI, “Petrogenesis of pillow lavas based on mineralogical and geochemical data in the eastern part of Sabzevar ophiolite,” IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, vol. 27, no. 3 , pp. 609–620, 2019, [Online]. Available: https://sid.ir/paper/3957/en

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