| 甘肃成县庙沟铅锌矿成矿环境及控矿构造分析 |
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| 引用本文： | 王自力,陈超,金文强,吴凤萍,李英杰,沈利霞,张福祥,胡建勇,范剑,郭忠,王纪昆,刘铭涛,刘志军.甘肃成县庙沟铅锌矿成矿环境及控矿构造分析[J].地质与勘探,2019,55(1):30-40. |
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| 作者姓名： | 王自力 陈超 金文强 吴凤萍 李英杰 沈利霞 张福祥 胡建勇 范剑 郭忠 王纪昆 刘铭涛 刘志军 |
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| 作者单位： | 天津华北地质勘查局,天津,300170;河北地质大学,河北石家庄,050031;山东省地质矿产勘查开发局第三地质大队,山东烟台,264003 |
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| 基金项目： | 国家自然科学基金项目（编号：41502211）、河北省自然基金项目 (编号：D2015403013)、河北省教育厅项目（编号：ZC2016060）、河北地质大学博士基金项目（编号：BQ201320）联合资助 |
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| 摘 要： | 甘肃成县庙沟铅锌矿床位于秦岭造山带西部,西(和)-成(县)铅锌矿田东段,矿床类型属喷流沉积型。岩石、矿石微量元素特征表明矿区形成时为贫氧环境;稀土元素Eu异常特征反映矿区古成矿流体温度较低,与厂坝-李家沟铅锌矿床形成条件相似; Ce异常特征亦反映矿区形成于贫氧的还原环境。通过探矿工程揭露,认为银洞湾矿段受其北东侧断层(F)与南西侧陡倾矿体共同控制,构造挤压是矿区形成高品位矿石的主要原因。结合区域上的研究成果,建立了矿区成矿模式,指出矿区应注意寻找块状、网脉状矿体,赋存于标高1700～1500m空间内的矿体,以及被断层(F)断失的矿体。
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| 关 键 词： | 成矿环境 控矿构造 成矿模式 西成矿田 庙沟铅锌矿 成县 甘肃 |
| 收稿时间： | 2016/11/3 0:00:00 |
| 修稿时间： | 2017/7/6 0:00:00 |
Ore-forming environment and ore-controlling structures of the Miaogou lead-zinc deposit in Chenxian, Gansu Province |
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| Wang Zili.Ore-forming environment and ore-controlling structures of the Miaogou lead-zinc deposit in Chenxian, Gansu Province[J].Geology and Prospecting,2019,55(1):30-40. |
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| Authors: | Wang Zili |
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| Institution: | Tianjin North China Geological Exploration Bureau, Tianjin; Heibei GEO University, Shijiazhuang, Hebei; Geological Team No.3,Shandong Bureau of Geology, Mineral Resources and Development, Yantai, Shandong |
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| Abstract: | The Miaogou lead-zinc deposit is located in the eastern of Xihe-Chengxian lead-zinc ore cluster which belongs to the western of Qinling Orogenic Belt, whose deposit type is Sedimentary Exhalative Deposit. The analytical results of trace elements indicate that forming environment of rocks and orebodies were under oxygen-poor condition; the characteristics of Eu anomaly reflect the lower temperature of paleo-mineralized fluids in Miaogou area, which is similar to the formation conditions of the Changba-Lijiagou lead-zinc deposit; the anomalous characteristics of Ce also reflect the the environment of formation were reduction. According to the exploration engineering (tunnels and drillings), it is considered that Yindongwan ore section is jointly controlled by the northeast side fault (F) and steep-dip orebody on the southwest side, structural compression of intrusive is the main reason for forming high grade ore. Finally, based on regional research achievements, the metallogenic model of the Miaogou area is established. It is pointed out that we should be pay attention to finding the massive and stockwork orebodies, and the orebodies were hosted in the space of the elevation of 1700-1500m, and the orebodies were lost by the fault (F). |
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| Keywords: | forming environment ore-controlling structures metallogenic model Xihe-Chengxian ore cluster Gansu Province |
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