Chemistry of Minerals and Geothermobarometry of Volcanic Rocks in the Region Located in Southeast of Bam, Kerman Province  

作　　者：Abdollah Yazdi Afshin Ashja-Ardalan Mohammad-Hashem Emami Rahim Dabiri Mohammad Foudazi 

机构地区：[1]Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran [2]Department of Geology, Islamshahr Branch, Islamic Azad University, Tehran, Iran [3]Department of Geology, Mashhad Branch, Islamic Azad University, Mashhad, Iran

出　　处：《Open Journal of Geology》2017年第11期1644-1653,共10页地质学期刊（英文）

摘　　要：In this paper, tectonic and geothermobarometric environments have been studied with respect to the combination of pyroxene, olivine and plagioclase in volcanic rocks in the southeast of Bam. The combination of volcanic rocks in the region consists of olivine basalt, basalt, alkaline basalt, andesite, trachyandesite and pyroxene andesite. This combination is the result of the processes of crystallization and sometimes contamination. Plagioclase, clinopyroxene, olivine, and amphibole constitute the major minerals (rock forming minerals) in these rocks. Porphyritic to mega-porphyritic textures with microlithic, glumero-porphyritic and amigdaluidal matrix are observed. Based on the thermometric calculations, plagioclase, pyroxene, and olivine minerals and the rocks of this region are crystallized at a pressure of 1.5 to 7 kb and temperatures ranging from about 700°C to 1250°C.In this paper, tectonic and geothermobarometric environments have been studied with respect to the combination of pyroxene, olivine and plagioclase in volcanic rocks in the southeast of Bam. The combination of volcanic rocks in the region consists of olivine basalt, basalt, alkaline basalt, andesite, trachyandesite and pyroxene andesite. This combination is the result of the processes of crystallization and sometimes contamination. Plagioclase, clinopyroxene, olivine, and amphibole constitute the major minerals (rock forming minerals) in these rocks. Porphyritic to mega-porphyritic textures with microlithic, glumero-porphyritic and amigdaluidal matrix are observed. Based on the thermometric calculations, plagioclase, pyroxene, and olivine minerals and the rocks of this region are crystallized at a pressure of 1.5 to 7 kb and temperatures ranging from about 700°C to 1250°C.

关 键 词：PLAGIOCLASE PYROXENE Geochemistry Thermo-Barometry Volcanic Rocks BAM 

分 类 号：P5[天文地球—地质学]