东昆仑东段长石山构造混杂岩带特征  

Characteristics of Changshishan tectonic mélange belt in the east section of East Kunlun

作　　者：杨杰 祁晓鹏 YANG Jie;QI Xiaopeng(Sino Shannxi Nuclear Industry Group Geological Survey Co.,Ltd.,Xi′an 710100,Shaanxi,China)

机构地区：[1]中陕核工业集团地质调查院有限公司,陕西西安710100

出　　处：《资源信息与工程》2022年第3期4-6,10,共4页Resource Information and Engineering

摘　　要：长石山构造混杂岩带位于东昆中构造混杂岩带东段,基质以千糜岩和糜棱岩为主,岩块可以分为碳酸盐岩岩块、碎屑岩岩块以及洋壳型岩块。本文通过对长石山构造混杂岩带地质特征、宏观和微观构造特征等进行研究,认为长石山构造混杂岩带内韧性剪切变形具有两期韧性剪切作用叠加的特征,早期表现为右行逆冲的特征,第二期表现为左行走滑性质。The Changshishan tectonic mélange belt is located in the east section of Central tectonic mélange belt of East Kunlun.The matrix is mainly phyllonite and mylonite,and the rock blocks can be divided into carbonate rock blocks,clastic rock blocks and oceanic crust rock blocks.Based on the research of material composition,macro and micro structural characteristics of Changshishan tectonic mélange belt,it is considered that the ductile shear deformation in the Changshishan tectonic mélange belt is characterized by the superposition of two stages of ductile shear,the early stage is characterized by right-slip thrust,and the second stage is characterized by left-lateral slip.

关 键 词：东昆仑 长石山 混杂岩 韧性剪切 

分 类 号：P588[天文地球—岩石学]