Mohsen Moazzen Articles List

List of Articles Mohsen Moazzen

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1 - Investigations on the geotectonic environment of Abdasht peridotites, SE Kerman Province, using spinel chemistry
Tayabeh Roudbari Mohsen Moazzen Seyed Hesamedin Moeinzadeh Abdolmajid ahangari

Peridotites are one of the main rock types of the Abdasht ophiolitic complex in southern Iran. Peridotites of this ophiolite are dunite and harzburgite. The important original minerals in the peridotites include olivine, orthopyroxene, spinel and to the lesser amounts, More

Peridotites are one of the main rock types of the Abdasht ophiolitic complex in southern Iran. Peridotites of this ophiolite are dunite and harzburgite. The important original minerals in the peridotites include olivine, orthopyroxene, spinel and to the lesser amounts, clinopyroxene. Study of the chemistry of spinel in these peridotites shows that their composition, based on the end-member chemistry, is Spl0.4 Chr0.57 Mag0.03 to Spl0.46 Chr0.51 Mag0.03. The chromium number (Cr#) varies from 0.73 to 0.92 and the Al2O3 contents are3.61 to 11.29 wt%. The chemical compositions show that spinel is mantle residua phase and its high Cr content indicates the peridotites depletion. Spinel chemistry shows that the studied peridotites are related to supra-subduction environment at a fore-arc setting with boninitic features. Manuscript profile
Open Access Article
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2 - Geochemistry and petrology of Qareh-Dash rhyolites from Shahindej- NW Iran: Geochemical features of post- collision volcanism
Masoumeh Ahangari معصومه نظری Mohsen Moazzen
20.1001.1.17357128.1399.14.56.4.7

Qareh-Dash rhyolites from the Shahindej area are peraluminous rocks with high SiO2 and K2O contents. These rocks are mainly composed of quartz, K- feldspar and rare plagioclase phenocrysts in a fine-grained K-feldspar rich matrix. Geochemically, Qareh-Dash rhyolites sho More

Qareh-Dash rhyolites from the Shahindej area are peraluminous rocks with high SiO2 and K2O contents. These rocks are mainly composed of quartz, K- feldspar and rare plagioclase phenocrysts in a fine-grained K-feldspar rich matrix. Geochemically, Qareh-Dash rhyolites show enrichment in LREEs and LILEs and depletion in HREEs. Field studies, textural and petrographical relations, along with whole rock geochemistry, demonstrate that the parental magma of the Qareh-Dash rhyolites was originated from the crust. The composition of the parental magma was modified due to fractional crystallization of plagioclase and titanomagnetite evidenced by negative Eu, Sr and Ti anomalies in multielement diagrams. The chemical characteristics of Qareh- Dash rhyolites such as Rb/Nb, K/Rb, Rb/Sr, Rb/Ba and Ga/Al ratios are similar to A-Type granites/ rhyolites associated with post- collision tectonic settings. According to Precambrian age for the Qareh-Dash rhyolites, formation of these rocks might be related to extensional phases which were probably taken place after closure of proto- Thetys Ocean. Manuscript profile

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List of Articles Mohsen Moazzen