江西茅排金矿床含金韧性剪切带构造特征  

TECTONIC CHARACTERISTICS OF THE DUCTILE SHEAR ZONE IN MAOPAI GOLD DEPOSIT AREA, JIANGXI PROVINCE, CHINA

作　　者：赖绍聪[1] 隆平[1] 

机构地区：[1]西北大学,西安710069

出　　处：《西北地质》1997年第3期53-58,共6页Northwestern Geology

摘　　要：茅排韧性剪切带是茅排金矿床主要控矿构造，属左行韧性平移剪切带，形成于加里东末期。带内剪切不协调格皱、粘滞型石香肠、塑性流变组构、拉伸线理以及波状消光、拔丝构造等宏观及微观韧性变形组构十分发育。该剪切带控制了茅排金矿床的空间定位，金矿化局限于剪切带内，剪切热能是地层中金活化的重要动力源，剪切带为含金热液的运移和金的沉淀提供有利通道和空间，并为晚期脆性构造叠加形成富矿体创造了前提。Maopai gold deposit belongs to matemorphic magmatic hydrothermaLtype. Theore structure is a rare sulfides--quartz--native gold. The geological scene is brittle--ductile shearzone. So it can be called the gold--bearing shear zone's gold deposit. The Maopai ductile shearzone develops some strong plastic deformation zone, which is strong strain district changed progressively. its boundaries are revealed out through shear--schistosity, orient -- distributed pseudopsephite, strong plastic deformation and mylonitized zone. Such strong strain zone is a beneficial place for gold--bearing hydrothermal moving and enriching, as well as an essential prerequisitefor gold mineralization.

关 键 词：韧性剪切带 金矿床 剪切带 构造特征 

分 类 号：P618.510.2[天文地球—矿床学] P542.2[天文地球—地质学]