[an error occurred while processing this directive] 世界地质 2020, 39(2) 322-331 DOI:   10.3969/j.issn.1004-5589.2020.02.007  ISSN: 1004-5589 CN: 22-1111/P

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本文关键词相关文章
豫西
老里湾银铅锌矿床
地质特征
爆破角砾岩
本文作者相关文章
丁培超
沈瑞峰
王振强
高凯
刘燕青
胡亚净
PubMed
Article by Ding P
Article by Shen R
Article by Wang Z
Article by Gao K
Article by Liu Y
Article by Hu Y
爆破角砾岩型矿化在豫西老里湾银铅锌矿区的发现及其找矿意义
丁培超1,2, 沈瑞峰1,2, 王振强1,2, 高凯1, 刘燕青1, 胡亚净1
1. 河南省地质矿产勘查开发局第一地质矿产调查院, 河南洛阳 471023;
2. 河南省金银多金属成矿系列与深部预测重点实验室, 河南 洛阳 471023
摘要: 老里湾银铅锌矿床为华北克拉通南缘崤山地区发现的首个大型银铅锌矿床,对在该矿区内新发现的爆破角砾岩型矿化类型的野外调查和室内综合研究显示,爆破角砾岩的形成与老里湾岩体的侵入关系密切,其为岩浆期后热液活动的产物,形成时期略滞后于矿区主成矿期。锆石U-Pb同位素年龄测定显示其形成年龄大致为137~133 Ma,推断与华北陆块南缘早白垩世岩石圈减薄环境下构造-岩浆-流体活动有关。爆破角砾岩型矿化类型的发现,完善了老里湾矿床“岩体顶部斑岩型矿化、外围构造带中脉状矿化及爆破角砾岩体中的爆破角砾岩型矿化”的矿化样式。
关键词 豫西   老里湾银铅锌矿床   地质特征   爆破角砾岩  
Discovery and prospecting significance of explosive breccia type mineralization in Laoliwan Ag-Pb-Zn mining area, western Henan Province
DING Pei-chao1,2, SHEN Rui-feng1,2, WANG Zhen-qiang1,2, GAO Kai1, LIU Yan-qing1, HU Ya-jing1
1. No.1 Institute of Geological and Mineral Resources Survey, Henan Bureau of Geo-exploration&Mineral Development, Luoyang 471023, Henan, China;
2. Key Laboratory of Metallogenic Series and Deep Prediction of Gold and Silver Polymetallic Deposits of Henan, Luoyang 471023, Henan, China
Abstract: Laoliwan Ag-Pb-Zn deposit is the first large deposit discovered in Xiaoshan area in the southern margin of North China Craton. Field investigation and comprehensive research on the newly discovered explosive breccia type mineralization indicate that explosive breccia has close relationship with Laoliwan intrusive rocks, it is the product of post-magmatic hydrothermal and its formation age slightly lags behind main ore-forming periods in the mining area. U-Pb isotopic age determination of zircon indicates that it is formed in about 137~133 Ma. It is inferred that the formation of explosive breccia is associated with Early Cretaceous tectono-magma-fluid activity under the tectonic environment of lithospheric thinning along the southern margin of North China block. The discovery of explosive breccia type mineralization completes the mineralization pattern that consists of porphyry mineralization type at the top of rock mass, vein mineralization type in peripheral structural belt and explosive breccia type mineralization in explosive breccia mass.
Keywords: western Henan Province   Laoliwan Ag-Pb-Zn deposit   geological characteristics   explosive breccia  
收稿日期 2019-10-22 修回日期 2020-03-17 网络版发布日期  
DOI: 10.3969/j.issn.1004-5589.2020.02.007
基金项目:

中国地质调查局地质调查项目(DD2016005205)

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