Mineral Chemistry and Thermobarometry of the Volcanic Rocks in Torud, Iran  

作　　者：Elham Shah Hosseini Afshin Ashja Ardalan Mohammad Hashem Emami Mohammad Hossein Razavi 

机构地区：[1]Department of Geology, North Tehran branch, Islamic Azad University, Tehran, Iran [2]Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran [3]Department of Geology, Eslamshahr Branch, Islamic Azad University, Eslamshahr, Iran [4]Department of Geology, Faculty of Sciences, Kharazmi University, Tehran, Iran

出　　处：《Open Journal of Geology》2014年第9期425-435,共11页地质学期刊（英文）

摘　　要：This paper elucidates the compositional studies on clinopyroxene, plagioclase of basalts to andesitic rocks of Torud area to understand the geotectonic and geothermobarometry conditions.?Early?Eocene-Oligocene calc-alkaline volcanic rocks are exposed around Torud in the Central Iranian zone. Volcanic rocks consist of basaltic, andesite basalt, Tracyandesite, and andesite. Minerals in the volcanic rocks exhibit degrees of disequilibrium features. Plagioclase as dominant mineral in these rocks generally displays oscillatory zoning. Mineral chemistry studies show that clinopyroxenes in the volcanic rocks are diopside, augite and plotted in medium pressure field. The clinopyroxene composition yields the crystallization temperatures 900°C?- 1000°C. The mineral composition indicates that these rocks are formed in a tensional environment.This paper elucidates the compositional studies on clinopyroxene, plagioclase of basalts to andesitic rocks of Torud area to understand the geotectonic and geothermobarometry conditions.?Early?Eocene-Oligocene calc-alkaline volcanic rocks are exposed around Torud in the Central Iranian zone. Volcanic rocks consist of basaltic, andesite basalt, Tracyandesite, and andesite. Minerals in the volcanic rocks exhibit degrees of disequilibrium features. Plagioclase as dominant mineral in these rocks generally displays oscillatory zoning. Mineral chemistry studies show that clinopyroxenes in the volcanic rocks are diopside, augite and plotted in medium pressure field. The clinopyroxene composition yields the crystallization temperatures 900°C?- 1000°C. The mineral composition indicates that these rocks are formed in a tensional environment.

关 键 词：VOLCANIC Rocks Mineral Chemistry CLINOPYROXENES PLAGIOCLASE Torud 

分 类 号：P5[天文地球—地质学]