| 北山成矿带月牙山-老硐沟地区铜多金属矿床成矿预测 |
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| 引用本文： | 段海龙,陈耀,张青,张成,曹磊,刘玉国,田柯南.北山成矿带月牙山-老硐沟地区铜多金属矿床成矿预测[J].地质科技通报,2021,40(5):188-197. |
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| 作者姓名： | 段海龙 陈耀 张青 张成 曹磊 刘玉国 田柯南 |
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| 基金项目： | 内蒙古自然资源厅勘查处综合预算项目"内蒙古北山成矿带金铜矿成矿关键问题研究及找矿预测" |
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| 摘 要： | 月牙山-老硐沟地区位于北山成矿带东南部，区内前期找矿工作主要围绕金、钨等矿种展开，而对铜相关矿床的地质特征和成矿预测则少有涉及。以野外地质调查为基础，结合室内多元找矿信息提取和综合分析，对该区典型铜多金属矿床的地质特征、找矿模型、综合找矿信息等进行了系统研究并开展了成矿预测。研究结果表明:区内的铜多与铁、铅、锌等伴生，矿床受碳酸盐岩、海西-印支期中酸性岩体及北西-北西西向断裂共同控制，为典型的矽卡岩型铜多金属矿床；北西-北西西向断裂、高磁异常体、铜铅锌地球化学异常叠加部位为此类矿床的有利找矿地段。据此，本次工作共圈定了4个预测区（A1、A2、B1、C1），野外查证在其中A1和A2预测区内见较好矿化，为区内下一步的找矿勘查工作指明了方向。
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| 关 键 词： | 内蒙古 北山造山带 铜多金属矿床 矽卡岩 成矿预测 |
| 收稿时间： | 2020-11-30 |
Metallogenic prediction of copper polymetallic deposit in the Yueyashan-Laodonggou area,Beishan Ore Belt |
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| Abstract: | The Yueyashan-Laodonggou area in the Inner Mongolia is located in the southeast of Beishan Ore Belt.Previous prospecting work in the area focuses on gold, tungsten and other minerals, wheras it rarely involved copper-related deposits.Based on the field geological survey, in combination with extraction and comprehensive analysis of indoor multivariate prospecting information, we systematically studied the geological characteristics, prospecting model and comprehensive prospecting information of typical copper polymetallic deposits in this area, and thus finally carried out metallogenic prediction.The copper in the area mostly occurs with iron, lead and zinc, and the deposits are controlled by carbonate, Paleozoic intermediate-felsicplutons and NW-NWW faults, thus can be classified as skarn-type copper polymetallic deposits.The places with NW-NWW faults, high magnetic anomalies and Cu-Pb-Zn geochemical anomalies are favorable prospecting area for such deposits.Hereby, four prediction areas (A1, A2, B1, C1) have been delineated, and high-quality mineralization and alteration are observed in two of them(A1, A2) by field verification, which points out the direction for the next-stage work in this area. |
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