吉林省中部双阳石灰厂一带韧性剪切带特征  

Characteristics of ductile shear zone in Shuangyang limestone factory in Central Jilin Province

作　　者：孔凡乾 李栋[1] 朱书宏[1] 袁鹏宇 王焱 徐峰 李东[1] KONG Fan-qian;LI Dong;ZHU Shu-hong;YUAN Peng-yu;WANG Yan;XU Feng;LI Dong(Regional Geological and Mineral Resources Survey of Jilin Province,Changchun 130022,Jilin,China)

机构地区：[1]吉林省区域地质矿产调查所,吉林长春130022

出　　处：《吉林地质》2020年第3期33-38,49,共7页Jilin Geology

基　　金：吉林1∶5万大三家子(K51E004023)幅区域地质调查(DD20190042-05),所属二级项目辽东-吉中地区区域地质调查.

摘　　要：吉中地区双阳石灰厂石炭系发育一条规模较大的韧性剪切带,倾向北西,倾角20°~40°。带内发育有糜棱岩化灰岩、钙质初糜棱岩和钙质糜棱岩,具有强弱相间分带的特征。根据不同类型面理、线理分析,确定其为挤压-逆冲-右行剪切型,由北向南逆冲,与磐石-吉昌逆冲推覆构造带相对,对冲在磐石-大酱缸晚三叠世原盆地之上,形成时代在晚三叠世-早侏罗世之间。There is a large-scale ductile shear zone developed in the Carboniferous in Shuangyang limestone factory in Central Jilin Province,inclined to the northwest with an inclination angle of 20°~40°.There are mylonitized limestone,calcareous primary mylonite and calcareous mylonite in the belt,which is characterized by strong and weak zoning.According to the analysis of different types of foliation and lineation,it is determined to be of the extrusion-thrusting-dextral shear type,thrusting from north to south,opposite to the Panshi-Jichang thrust nappe tectonic belt,and is opposed to the Panshi-Dajianggang original basin in the Late Triassic.The formation age of the ductile shear zone was between the Late Triassic and the Early Jurassic.

关 键 词：韧性剪切带 逆冲推覆 晚三叠世 磐石-大酱缸盆地 

分 类 号：P536[天文地球—古生物学与地层学]