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南秦岭小寨沟银矿地质特征及其构造约束

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文章导航 > 西北地质 > 2021 > 54(3): 108-120

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陶威, 郭岭, 李阳, 魏丽, 陈涛, 季春, 刘团峰, 王小刚. 2021. 南秦岭小寨沟银矿地质特征及其构造约束. 西北地质, 54(3): 108-120. doi: 10.19751/j.cnki.61-1149/p.2021.03.008
引用本文: 陶威, 郭岭, 李阳, 魏丽, 陈涛, 季春, 刘团峰, 王小刚. 2021. 南秦岭小寨沟银矿地质特征及其构造约束. 西北地质, 54(3): 108-120. doi: 10.19751/j.cnki.61-1149/p.2021.03.008
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TAO Wei, GUO Ling, LI Yang, WEI Li, CHEN Tao, JI Chun, LIU Tuanfeng, WANG Xiaogang. 2021. The Geological Characteristics and Structural Constraints of Xiaozhaigou Silver Deposit in South Qinling. Northwestern Geology, 54(3): 108-120. doi: 10.19751/j.cnki.61-1149/p.2021.03.008
Citation: TAO Wei, GUO Ling, LI Yang, WEI Li, CHEN Tao, JI Chun, LIU Tuanfeng, WANG Xiaogang. 2021. The Geological Characteristics and Structural Constraints of Xiaozhaigou Silver Deposit in South Qinling. Northwestern Geology, 54(3): 108-120. doi: 10.19751/j.cnki.61-1149/p.2021.03.008
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南秦岭小寨沟银矿地质特征及其构造约束

  • 1. 大陆动力学国家重点实验室, 西北大学地质学系, 陕西 西安 710069;

  • 2. 陕西地矿区研院有限公司, 陕西 咸阳 712000;

  • 3 陕西省地质调查规划研究中心(陕西省地质勘查基金中心), 陕西 西安 710068

  • 基金项目:

    国家自然科学基金“海洋古沉积环境特征序列演化的黑色页岩记录”（41302076），“秦岭晚中生代花岗岩的构造研究及其对陆内造山过程的约束”（41802212），陕西省地勘“陕西省镇安县龙潭子-西边沟一带金多金属矿普查”（61201203116）联合资助。

详细信息
    作者简介: 陶威(1987-),男,工程师,博士研究生,从事区域地质、矿产调查。E-mail:hputw07@163.com。
    通讯作者: 郭岭(1983-),男,副教授,博士,从事矿产普查与勘探方面的教学及研究工作。E-mail:guoling@nwu.edu.cn。

  • 中图分类号: P618.52

The Geological Characteristics and Structural Constraints of Xiaozhaigou Silver Deposit in South Qinling

  • 1. State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an 710069, Shaanxi, China;

  • 2. Regional Geological Survey Academe of Shaanxi Geology and Mining Group Co., Ltd. Xianyang 712000, Shaanxi, China;

  • 3. Shaanxi Center of Geological Survey and Planning Research(Shaanxi Geological Exploration Fund Center), Xi'an 710068, Shaanxi, China

More Information

    摘要
  • 秦岭造山带是一个多旋回复合大陆碰撞造山带，综合研究表明造山带中断裂及褶皱构造对矿体具有较好的控制作用。笔者选择秦岭造山带小寨沟银矿区为研究对象，通过银矿体宏观特征、地球化学综合异样分布特征及区域构造解析等多学科手段，对小寨沟银矿控矿构造提出了新的认识。综合研究结果显示，南秦岭旬阳坝-石瓮子滑脱推覆体晚期具有右行走滑的运动学特征，而且该推覆体的右行走滑运动学附属的北西—南东向张性断裂对银矿体、银矿化蚀变带及地球化学综合异常具有明显的控制作用。同时，在邻区相似构造体制下，沿北西—南东向断裂均发现有矿点或蚀变带发育。因此，建议在后续工作中进一步对区内构造进行详细剖析，对于该区扩大找矿成果具有指导意义。
    Qinling orogen is a multi-cycle composite continental collision orogenic belt. Comprehensive study shows that faulting and folding in the orogen have a good control on the ore body.This paper selects Xiaozhaigou silver deposit in Qinling orogen as the research object.The authors put forward some new understanding to the ore-controlling structure through multi-approaches including the macro-characteristic of silver ore body, the distribution characteristic of geochemical comprehensive anomaly, and the regional structural analysis.The regional tectonic analysis shows that the Xunyangba-Shiwengzi detachment nappe had dextral strike-slip mechanism.The NW-SE extensional faults controlled the silver ore bodies,the silver mineralization alteration zone and the geochemical comprehensive anomaly.In the adjacent area of similar structural system, some ores or alteration zones were developed along the NW-SE faults.It is suggested that further structural analysis should be conducted in this area, which has certain guiding significance to the prospecting achievement.
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收稿日期:  2020-07-05
修回日期:  2021-02-27

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