煤田地质与勘探2017，Vol.45Issue(2)：32-38,7.DOI:10.3969/j.issn.1001-1986.2017.02.006
京西羊屎沟变质矿物组合及变质带
Metamorphic mineral assemblage and metamorphic zones of Yangshigou area in western Beijing
摘要
Abstract
The division of contact thermal metamorphic zones provides a strong basis for the study of metamorphic processes. According to metamorphic mineral assemblage of Yangshigou in western Beijing and its spatial distri-bution in strata, the contact thermal metamorphic zones of this area is divided and the formation stages of meta-morphism were analyzed. Due to the intrusion of the Fangshan magmatic rock, surrounding rocks suffered from different degree of contact thermal metamorphism, which formed various metamorphic minerals. In particular types of rocks, there are regular combinations of characteristic metamorphic minerals. Using polarizing microscope and X-ray fluorescence spectroscopy, it is divided into the diopside-tremolite zone, the mica zone, the andalusite zone and the sericite zone, indicating that the degree of rock metamorphism decreased with the distance from mag-maticrock.With the formation of different metamorphic minerals at different stages of magmatic intrusion, the contact thermal metamorphism is divided into five progressive stages.关键词
羊屎沟/房山岩体/接触热变质/变质带Key words
Yangshigou/Fangshan magmatic rock/contact thermal metamorphism/metamorphic zone分类
天文与地球科学引用本文复制引用
彭燕燕,宋波涛,刘路,刘钦甫..京西羊屎沟变质矿物组合及变质带[J].煤田地质与勘探,2017,45(2):32-38,7.基金项目
国家自然科学基金项目(41672150) （41672150）
中国矿业大学(北京)2015年大学生创新训练计划项目(C201502005) National Natural Science Foundation of China(41672150) （北京）
College Students' Innovative Training Program of China University of Mining and Technology(C201502005)c （C201502005）
