Mechanism of inversion metallogeny of quartz vein type gold deposits in the Xiaoqinling region  

作　　者：Liangwei Xue Quanzeng Shi Xiangdong Yu Yadong Zheng Jinjiang Zhang 

机构地区：[1]Geol Inst Henan Province, Zhengzhou 450053, Peoples R China [2]Peking Univ, Dept Geol, Beijing 100871, Peoples R China

出　　处：《Chinese Science Bulletin》1998年第10期848-850,共3页

基　　金：theNationalNaturalScienceFoundationofChina (GrantNo .49472 142 )andtheGoldManagementBureauofChina (91 93 10 )

摘　　要：There are a lot of important gold_bearing quartz veins in the Xiaoqinling metamorphic core complex. The quartz veins are strictly controlled by shear zones. Stress analysis indicates that the metallizing process of the Xiaoqinling gold deposits of quartz vein type can be divided into two stages. At the first stage, the shear zones were formed in an extensional environment, and the temperature was higher and the buried depth was greater; at the second stage, the brittle thrusts were superimposed in ductile shear zones after the tectonic stress field turned from the extension to compression. The ore_bearing fluids were concentrated in these weak positions, and the gold deposits of quartz vein type were developed.There are a lot of important gold-bearing quartz veins in the Xiaoqinling metamorphic core complex. The quartz veins are strictly controlled by shear zones. Stress analysis indicates that the metallizing process of the Xiaoqinling gold deposits of quartz vein type can be divided into two stages. At the first stage, the shear zones were formed in an extensional environment, and the temperature was higher and thr buried depth was greater; at the second stage, the brittle thrusts were superimposed in ductile shear zones after the tectonic stress field turnrd form the extension to compression. The ore-bearing fluids were concentrated in these weak positions, and the gold deposits of quartz vein type were developed.

关 键 词：structural INVERSION shear zone quartz VEIN METAMORPHIC core complex XIAOQINLING gold deposits. 

分 类 号：P618.5[天文地球—矿床学]