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 Foudazi Mohammad-Hashem Emami Rahim Dabiri
• 来源期刊: 地质学期刊(英文)
• 学科: 地球科学
• 关键词: PLAGIOCLASE PYROXENE Geochemistry Thermo-Barometry Volcanic Rocks BAM
• 年，卷（期）: 2017,（11）
• 页码范围: 1644-1653
• 页数: 10页
• 分类号: P5

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.