نوع مقاله : مقاله پژوهشی
نویسندگان
1 بخش زمینشناسی، دانشگاه شهید باهنر کرمان، ایران
2 بخش علوم زمین، دانشگاه یونیمی میلان، ایتالیا
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The studied area is located about 45 km northwest of Shahr-Babak, southeast of the Urumieh-Dokhtar volcanic belt, and is a part of the central Iran. In the gabbro intrusive mass of this area, gabbro pegmatite is observed, which indicates their deep origin. In plagioclase and pyroxenes, disequilibrium textures such as enclaves, sieve textures, and zoning are observed. Plagioclases are type andesine to bitonite. Pyroxenes are clinopyroxene (diopside) in the igneous range (subalkaline-tholeiitic). Also, these minerals are formed during orogeny in the volcanic arc setting. The formation temperature of plagioclase minerals ranges between 550 to 850 degrees Celsius and the temperature of clinopyroxene minerals is between 1180 to 1220 degrees Celsius. The pressure during the crystallization of clinopyroxene minerals ranges between 6 to 10 kbar. Environmentaly, the pyroxene minerals formed in the oxygen fugacity is high and the amount of magma water during magma crystallization is calculated to be about 10%. Olivines are hyalosiderite type and rich in magnesium.
کلیدواژهها [English]