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黔西北矿集区亮岩铅锌矿区成矿构造解析
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  • 英文篇名:ORE-FORMING STRUCTURE ANALYSIS OF THE LIANGYAN LEAD-ZINC MINING AREA IN NORTHWESTERN GUIZHOU DEPOSIT CONCENTRATION DISTRICT, CHINA
  • 作者:王明志 ; 韩润生 ; 周威 ; 宋丹辉 ; 罗达 ; 周剑飞 ; 吴睿林
  • 英文作者:WANG Mingzhi;HAN Runsheng;ZHOU Wei;SONG Danhui;LUO Da;ZHOU Jianfei;WU Ruilin;Kunming University of Science and Technology,Faculty of Land Resource Engineering;Southwest Institute of Geological Survey,Geological Survey Center for Non-ferrous Mineral Resources;Guiyang Mining Investment & Development Corporation.Ltd.;
  • 关键词:成矿构造 ; 北东构造带构造体系 ; 黔西北矿集区 ; 亮岩铅锌矿 ; HTZ铅锌矿
  • 英文关键词:ore-forming structure;;tectonic system of the NE tectonic belt;;northwestern Guizhou ore-concentrated area;;LiangYan lead-zinc deposit;;HZT deposit
  • 中文刊名:DZLX
  • 英文刊名:Journal of Geomechanics
  • 机构:昆明理工大学国土资源工程学院;有色地质调查中心西南地质调查所;贵阳矿业开发投资股份有限公司;
  • 出版日期:2019-04-15
  • 出版单位:地质力学学报
  • 年:2019
  • 期:v.25
  • 基金:国家自然科学基金项目(41572060);; 云岭学者资助项目(2014);; 省、校创新团队资助项目(2012)
  • 语种:中文;
  • 页:DZLX201902059
  • 页数:11
  • CN:02
  • ISSN:11-3672/P
  • 分类号:41-51
摘要
亮岩铅锌矿是川滇黔接壤区黔西北铅锌矿集区的典型矿床之一。基于矿田地质力学理论与方法,通过对该矿床三个中段出露的垭都—蟒硐断裂带结构进行精细解析,综合矿床地质特征和区域构造分析,认为该区至少历经了三期构造成生发展过程,相应的主压应力方向依次变化为北西向→北东向→东西向,其中在成矿期主要受北西—南东向挤压作用,为北东构造带。因该断裂带走向变化,在其不同部位的力学性质相应发生改变,导致矿体赋存特征存在明显差异。结合黔西北矿集区内其它典型矿床控矿构造的对比研究,发现这些矿床具有相似的构造控矿规律,而且与滇东北矿集区会泽型(HZT)铅锌矿均受到统一的构造应力场控制。不同于垭都—蟒硐成矿带在成矿期受北西构造带构造体系控制的传统观点,该新认识认为燕山期北东—西南向挤压作用所形成的北西构造带构造体系为成矿后构造(破矿构造)。这些认识为该区乃至黔西北矿集区深部找矿预测提供了重要启示。
        The Liangyan Pb-Zn deposit is one of the typical deposits in the northwest Guizhou Pb-Zn polymetallic ore-concentrated area in the Sichuan-Yunnan-Guizhou Triangle area(SYGT). Based on detailed analysis of the ore-controlling structures of the three levels at DaJie ore section by Geological Mechanics Theory and Method of Ore-field, combining comprehensive analysis of regional structure, this paper focuses on the prospecting direction in the deeper part of this area. The analysis shows that at least three tectonic stages developed in this area, and the corresponding principal compressive stress changes successively from NW to NE, then to EW. Ore bodies controlled by different mechanisms occurred in different parts of the fault. It is concluded that the deposit was controlled by NW-SE-trending compressive stress processes in the ore-forming period, which is coincident to the tectonic stress field of the northeast Yunnan HZT deposit concentration district. This new understanding is different from the previous opinion that the Yadu-Mongdong metallogenic belt in the metallogenic period was controlled by NE-SW-trending compressive stress processes. The NW-SE-W compression is basically a tectonic event after the mineralization.
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