Mechanism of inversion metallogeny of quartz vein type gold deposits in the Xiaoqinling region |
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Authors: | Liangwei Xue Quanzeng Shi Xiangdong Yu Yadong Zheng Jinjiang Zhang |
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Institution: | XUE Liangwei 1, SHI Quanzeng 1, YU Xiangdong 1, ZHENG Yadong 2 and ZHANG Jinjiang 2 1. Geological Institute of Henan Province, Zhengzhou 450053, China; 2. Department of Geology , Peking University, Beijing 100871, China |
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Abstract: | 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. |
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Keywords: | structural inversion shear zone quartz vein metamorphic core complex Xiaoqinling gold deposits |
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