地球学报2011，Vol.32Issue(3)：269-278,10.DOI:10.3975/cagsb.2011.03.02
吉林南部地区老岭群变质作用特征研究
A Study of Metamorphic Characteristics of Laoling Group in Southern Jilin Province
摘要
Abstract
Metamorphic minerals are widely developed in Laoling Group of southern Jilin Province. Based on a detailed analysis of the metamorphic minerals in rock samples, the authors hold that the main minerals in lower sub-group of Lanling Group can be divided into two generations: M1 and M2, which represent two metamorphic stages. Researches on metamorphic assemblage, distribution characteristics and division of metamorphic facies show that M1 is characterized by low-to-moderate temperature regional dynamic heat flow metamorphism which can be divided into two metamorphic facies: lower greenschist facies and high greenschist facies. By contrast, M2 is represented by local thermal metamorphism which can be divided into three metamorphic facies: lower greenschist facies, high greenschist facies and lower amphibolitic facies. Comprehensive studies show that metamorphism of the sub-group of Laoling Group in southern Jilin Province is characterized by reduction of influencing area and decrease of intensity from early to late. This tendency suggests hat the earth's crust became stable in Paleo Proterozoic.关键词
老岭群/变质作用特征/吉林南部Key words
southern Jilin Province/ Laoling Group/ metamorphic characteristics分类
天文与地球科学引用本文复制引用
邢树文,李军,马玉波,孙永杰,李孝文,李宏茂,张增杰..吉林南部地区老岭群变质作用特征研究[J].地球学报,2011,32(3):269-278,10.基金项目
本文由中国地质调查局地质调查工作项目"中国东北部陆缘金、有色金属多期成矿作用和勘查选区研究"(编号:1212010012006)资助. （编号:1212010012006）
