摘要
本文对吉林夹皮沟金矿区太古代麻粒岩中斜长石、钾长石、单斜辉石、斜方辉石、黑云母、铁铁氧化物矿物、角闪石及石榴石等进行较系统的矿物学研究和电子探针分析,并运用一系列共生矿物地质温度计和压力计估算本区麻粒岩相变质作用的温度为800—850℃,压力为1.0—1.2GPa,氧逸度fo_2为10^(-5)—10^(-8)Pa,水分压p_((H_2)o)为43.6—128.8MPa(平均72.7MPa)。
Detailed mineralogical studies and systematic electron microprobe analysis have been made on the plagioclase,K-spar,elinopyroxene,orthopyroxene,biotite,Ti-Fe oxides,garnet and amphibole in the Jiapigou granulite facies rocks. The p-T conditions of granulite fades metamorphism calculated by a variety of geothermometers and geobarometers are 1.0—1.2 GPa and 800—850℃ while the fo_2 and P(?)_2o are 10^(-6)—10^(-8) Pa and 43. 6—128. 8 MPa,respectively.
出处
《矿物岩石》
CAS
CSCD
1992年第3期17-26,共10页
Mineralogy and Petrology
基金
国家自然科学基金
关键词
麻粒岩
岩相
岩石
矿物学
变质作用
mineralogy
condition of metamorphisrn
Archaean granulite
Jiapigou in Jilin province
