摘要
西昆仑山北坡新发现的其曼于特蛇绿混杂岩带所包含的主要岩性单位有:蛇纹岩(变辉橄岩)、橄榄辉石岩、层状辉长岩、辉长岩、辉绿岩席、枕状、块状、杏仁状玄武岩,与之共生的沉积岩为紫红色硅质岩、深灰色硅质岩、薄层灰岩等。本文就该蛇绿混杂岩带的地质、岩石学特征及主要岩石单元的年代学特征进行论述,并对其地质意义进行初步探讨。
The major rock units involved in the Qimanyute ophiolite discovered on the northern slope of the West Kunlun Mountains include ophiolite(metaharzburgite),olivine pyroxenite,layered gabbro,gab-bro,diabase sheets and pillow,massive and amygdaloidal basalt,and their associated sedimentary rocks are purplish red chert,dark gray chert and thin-bedded limestone.This paper discusses the geology,geochem-istry and chronology of major rock units of this ophiolitic mélange belt and its geological significance.
出处
《地质通报》
CAS
CSCD
北大核心
2002年第8期575-578,共4页
Geological Bulletin of China
基金
中国地质调查局于田和伯力克两幅1:25万区域地质调查项目成果。
关键词
昆仑
早古生代
蛇绿混杂岩
辉长岩
玄武岩
West Kunlun
Qimanyute
Early Paleozoic
ophiolite
Proto-Tethys
