赵佳进,许明珠,刘建平,唐宇蔷,孔华,张强,杨哲.湘西花垣铅锌矿田的成矿构造[J].地质找矿论丛,2016,31(3):346-354 |
湘西花垣铅锌矿田的成矿构造 |
The ore-forming structural of Huayuan lead-zinc ore field in western Hunan province |
投稿时间:2015-05-14 |
DOI:10.6053/j.issn.1001-1412.2016.03.005 |
中文关键词: 花垣铅锌矿田 液压角砾岩 三大断裂 构造应力场 湘西地区 |
英文关键词:Huayuan lead-zinc ore field hydrofractural breccia three big faults tectonic stress field western Hunan province |
基金项目:中国地质调查局“整装勘查关键基础地质研究”项目(编号:12120114052201)资助。 |
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中文摘要: |
在对湘西花垣铅锌矿田的成矿地质背景、矿床地质特征和矿石结构构造研究的基础上,重点分析了花垣矿田成矿构造特征,包括成矿前构造、成矿期构造和成矿后构造。通过矿田地质调查,认为铅锌成矿作用与液压角砾岩关系密切,而液压角砾岩为成矿期构造;根据成矿后断裂的主要特征,结合擦痕产状,反演出花垣矿田成矿后共受到3期构造应力作用;根据成矿期构造的空间分布规律(成矿期构造受花垣-张家界断裂左行走滑形成的张性空间控制)和原始礁灰岩台地的分布规律,预测了远景勘查区域。 |
英文摘要: |
This paper briefly introduces the geological background, geological characteristics and ore textures and structures of the Huayuan lead-zinc deposit in western Hunan Province and focuses on the analysis of characteristics of the ore-forming structure which involves the pre-mineralization structure, mineralization structure and post-mineralization structure. Investigation of the ore field shows that the mineralization is closely related to hydrofractural breccia and the breccia fracture is the syn-mineralization structure. According to the characteristics of the post-mineralization fracture and the occurrence of striation the Huayuan Pb-Zn ore field are exposed to three stresses after mineralization. Prospects for further exploration are predicted according to spatial distribution pattern of the syn-mineralization fracture (i.e. the syn-mineralization fracture is controlled by tensional space resulted from left hand strike slip of Huayuan-Zhangjiajie fault)and reef limestone. |
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