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作 者:石明科 黄波 杨涛 徐伟钧[3] 李大吉 黎朋 杨顺文 SHI Ming-ke;HUANG Bo;YANG Yao;XU Wei-jun;LI Da-ji;LI Peng;YANG Shunwen(School of resources and environmental engineering,Guizhou Institute of technology,Guiyang 550003,China;Geophysical and Geochemical Survey,Guizhou Bureau of Nonferrous Metals and Uranium Geology,Duyun,Guizhou 558000;Zhejiang Institute of Hydrogeology and Engineering Geology,Ningbo Zhejiang 315012)
机构地区:[1]贵州理工学院资源与环境工程学院,贵阳550003 [2]贵州有色金属和核工业地质勘查局物化探总队,贵州都匀558000 [3]浙江省水文地质工程地质大队,浙江宁波315012
出 处:《四川地质学报》2019年第4期536-541,共6页Acta Geologica Sichuan
基 金:贵州省科技厅科技支撑计划社发公关领域项目(黔科合[2016]2846);全国海陆成矿图件编制更新(DD20160344)资助
摘 要:贵州省由上扬子陆块西南缘与江南复合造山带的大陆地壳,经历了四期的构造旋回;其中武陵构造旋回期产生了普安-贵阳-梵净山断裂,是上扬子陆块与江南复合造山带的分界线;雪峰-加里东构造旋回和海西-印支-燕山构造旋回是贵州省重要的成矿期;喜山期及新构造旋回期,形成黔西南重要的红土型金矿。在黔西南-黔西地区呈北西走向的紫云-垭都深断裂,具多期构造特点,切穿了上地幔软流圈并引发了"加厚旋涌"效应,导致强烈岩浆活动和大规模成矿物质上涌,在有利成矿环境中与碎屑岩-碳酸盐岩建造中完成各种成矿作用,使黔西南-黔西地区成为贵州重要矿产资源集中区。The continental crust of Guizhou Province composed of the southwest margin of the upper Yangtze block and a part of the Jiangnan orogenic belt has experienced four tectonic cycles. The Puan-Guiyang-Fanjing fault as the boundary between the upper Yangtze block and the Jiangnan orogenic belt was developed in the Wuling tectonic cycle. The Xuefeng-Caledonian tectonic cycle and the HercynianIndo-Sinian-Yanshanian tectonic cycle are important mineralization periods in Guizhou Province. The lateritic gold deposits in southwest Guizhou Province were formed in the Himalayan or "neotectonic cycle" stage. The NW-trending Ziyun-Yadu fault characterized by multiphase tectonic activity cut through the upper mantle asthenosphere which resulted in strong magmatic activity and large scale upwelling of ore material thanks to which mineralization occurred in the clastic rocks and carbonate rocks in southwest and west Guizhou as an important mineral resources area.
关 键 词:贵州省大地构造 “加厚旋涌” 紫云-垭都深断裂 矿床分布特征
分 类 号:P548[天文地球—构造地质学]
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