山西娄烦变质岩中蓝晶石、十字石和红柱石的特征及形成条件  

The Characteristics and Forming Conditions of Staurolite and Kyanite and Sillimanite in The Metamorphic Rocks in LouFan District, ShanXi Province

作　　者：卢保奇[1] 王赐银[2] 

机构地区：[1]上海大学材料学院宝石技术与工艺专业,上海201800 [2]南京大学地球科学系,南京210093

出　　处：《上海地质》2003年第3期56-60,共5页

摘　　要：通过电子探针成分分析和矿物共生组合分析,利用地质温度计估算十字石、蓝晶石和红柱石的形成温压条件,以揭示十字石、蓝晶石和红柱石的形成与本区西川河断裂区域变质作用的关系。研究结果表明:本区西川河断裂以北地区出露的十字石和蓝晶石形成条件受压力控制(P=5.5-7Kpa),变质温度为520-550℃;而西川河断裂以南地区出露的红柱石的形成条件主要受温度控制(T=570-600℃),压力小于3Kpa。西川河断裂控制了南北地区的变质条件,进而控制了特征变质矿物十字石、蓝晶石和红柱石的空间分布。The characteristics and forming conditions of staurolite and kyanite and sillimanite in the metamorphic rocks in LouFan District, ShanXi Province have bee investigated. EPMA and the mineral paragenesis and the estimated calculation of geothermometer indicate that Staurolite and Kyanite in the North of the Xichuan are formed at the higher pressure (P = 5 - 7Kpa) and the lower temperature (T = 520 - 550℃) , whereas Sillimanite in the South is controlled by relatively higher temperature (T = 570 - 600 ℃ ) and the lower pressure (P < 3Kpa) , which is dominated by the fault of Xichuan river.

关 键 词：变质岩 蓝晶石 十字石 红柱石 地质温度计 西川河断裂 

分 类 号：P588.3[天文地球—岩石学]