伊朗中部雅克哈卜地区火山岩的地质和岩石学

Kaveh Pazand , Asghar Ghasemi Bersiani , Hassan Mohammadnezhad
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引用次数: 0

摘要

位于伊朗中部构造带的乌鲁木齐-多赫塔尔岩浆带,在喀山东部出露始新世至第四纪火山岩和深成岩。这些火山岩的成分从玄武岩安山岩、安山岩、流纹岩、英安岩、凝灰岩到花岗长岩不等。共采集了100个岩石样品,并根据岩石学和地球化学研究和实地观察对雅克哈卜地区的火山岩进行了评价。地球化学研究表明,这些岩石为偏铝或偏铝。岩石的SiO2含量在42% ~ 75%之间。火山岩地球化学特征表明岩浆来源于富集的岩石圈,岩浆来源于下地壳或上地幔岩石圈。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Geology and petrography of the volcanic rocks in the Yakhab area, central Iran

Eocene to Quaternary volcanic and plutonic rocks are exposed in eastern of Kashan in the Urumieh-Dokhtar magmatic belt that located in the Central Iran structural zone. These volcanic rocks have compositions ranging from basaltic andesites, andesites, rhyolite, dacite, tuff to granidiorites. A total of 100 rock samples were taken and based on petrographic and geochemical studies with field observations volcanic rocks in the Yakhab area were evaluated. Geochemical studies show these rocks are a slightly meta-aluminous to per-aluminous. The rocks have SiO2 contents ranging between 42% and 75%. The geochemical characteristics of the volcanic rocks show that magma was derived from an enriched lithospheric source and indicated magma derived from lower crust or upper mantle lithosphere.

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