元谋变质核杂岩南部韧性剪切带特征及石墨矿化  

CHARACTERISTICS OF DUCTILE SHEAR ZONE AND GRAPHITE MINERALIZATION IN THE SOUTH OF YUANMOU METAMORPHIC CORE COMPLEX

作　　者：包大林 杜小波 廖志凯 杨宇 BAO Da-lin;DU Xiao-bo;LIAO Zhi-kai;YANG Yu(Team 209,Yunnan Nuclear Industry,Kunming 650032;Yunnan Three Rare Mineral Resources Exploration and Evaluation Engineering Research Center,Kunming,650032)

机构地区：[1]云南省核工业二〇九地质大队,云南昆明650032 [2]云南省三稀矿产资源勘查评价工程研究中心,云南昆明650032

出　　处：《云南地质》2024年第2期230-234,共5页Yunnan Geology

基　　金：2022年度云南省地质勘查基金项目,项目编号:D202203。

摘　　要：通过元谋变质核杂岩南部地质调查及钻探工作,识别出4条韧性剪切带,宏观特征有糜棱岩及糜棱岩化岩石、拉伸线理、S-C组构、尖棱褶皱等,微观特征有石英动态重结晶、旋转碎斑、不对称压力影、云母鱼及微观尖棱褶皱等。已施工钻孔数据表明韧性剪切带范围为晶质石墨矿体良好容矿部位。Four ductile shear zones have been identified through the geological survey and drilling work in the southern part of the Yuanmou metamorphic core complex.The macroscopic features of them include mylonite and mylonitized rocks,stretching lineation,S-C fabric,sharp-edged folds,etc,whereasthe microscopic features include quartz dynamic recrystallization,rotational porphyroclasts,asymmetric pressure shadows,mica fish and microscopic sharp-edged folds.The drilling data show that the ductile shear zone is a good ore-bearing space of the crystalline graphite ore body.

关 键 词：变质核杂岩 韧性剪切带特征 石墨矿化 云南元谋. 

分 类 号：P542.3[天文地球—构造地质学] P619.252[天文地球—地质学]