夏塞银铅锌矿床控矿断裂构造及矿体定位机制
发布时间：2018-07-25 11:27
【摘要】：义敦岛弧中段夏塞地区发育多个由断裂破碎带控制的大、中型岩浆热液脉状多金属矿床,这些矿床具有极其相似的地质背景,形成于相同的断裂构造体系。本文选取夏塞银铅锌矿床进行控矿断裂特征调查、断裂构造序次和成矿应力场分析及矿体定位机制研究,以期为该地区热液矿床的下一步找矿工作提供理论依据。对该矿床成矿地质背景及控矿断裂构造的综合研究表明:(1)矿区NNW向控矿断裂具有多期活动且成矿阶段断裂性质为左行正断层;(2)矿体定位于德格-乡城断裂和德莱-定曲断裂(Ⅰ)的次级断裂(Ⅱ)所派生的NNW向更次级的结构面(Ⅲ)中;(3)矿区NNW向断裂控制着矿化局部富集空间、矿脉展布型式及矿体的产出。
[Abstract]:There are many large and medium-size magmatic hydrothermal vein polymetallic deposits controlled by fracture zone in Xassai area in the middle segment of Yidun Island Arc. These deposits have very similar geological background and formed in the same fault structure system. In this paper, the ore-controlling fault characteristics of Xiasai silver-lead-zinc deposit are investigated, the sequence of fault structure and metallogenic stress field are analyzed, and the mechanism of orebody location is studied in order to provide theoretical basis for the next prospecting of hydrothermal deposit in this area. A comprehensive study of the metallogenic geological setting and ore-controlling fault structure of the deposit shows that: (1) the NNW ore-controlling fault in the ore area has multi-stage activity and the fault property of the metallogenic stage is left-lateral normal fault, (2) the orebody is located in the Degue-Xiangcheng fault and the Dela fault. (3) the NNW trending faults of the mining area control the local enrichment space of mineralization, and the secondary faults (鈪，
本文编号：2143679
[Abstract]:There are many large and medium-size magmatic hydrothermal vein polymetallic deposits controlled by fracture zone in Xassai area in the middle segment of Yidun Island Arc. These deposits have very similar geological background and formed in the same fault structure system. In this paper, the ore-controlling fault characteristics of Xiasai silver-lead-zinc deposit are investigated, the sequence of fault structure and metallogenic stress field are analyzed, and the mechanism of orebody location is studied in order to provide theoretical basis for the next prospecting of hydrothermal deposit in this area. A comprehensive study of the metallogenic geological setting and ore-controlling fault structure of the deposit shows that: (1) the NNW ore-controlling fault in the ore area has multi-stage activity and the fault property of the metallogenic stage is left-lateral normal fault, (2) the orebody is located in the Degue-Xiangcheng fault and the Dela fault. (3) the NNW trending faults of the mining area control the local enrichment space of mineralization, and the secondary faults (鈪，
本文编号：2143679
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