安徽东至兆吉口铅锌多金属矿床地质特征及找矿方向

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英文篇名：Geological Characteristics and Prospecting Orientation of Zhaojikou Lead- zinc Polymetallic Ore Deposits in Dongzhi County of Anhui Province 作者：段开兵 ; 庄天明 ; 段吉琳 英文作者：DUAN Kai-bing1 ; ZHUANG Tian-ming2 ; DUAN Ji-lin3 (1.Institute of Geophysical and Geochemical Prospecting Technology of Anhui Province ; Hefei ; AH 230022 ; China ; 2. School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China ; 3. East China Institute of Technology ; Nanchang ; JX 330013 ; China) 关键词：铅锌多金属 ; 矿床地质 ; 找矿方向 ; 兆吉口 英文关键词：Lead-Zinc polymetallic deposit ; deposit geology ; prospecting orientation ; Zhaojikou 刊名：东华理工大学学报(自然科学版) 英文刊名：Journal of East China Institute of Technology(Natural Science) 出版日期：2013-06-30 出版单位：东华理工大学学报(自然科学版) 机构：安徽省地球物理地球化学勘查技术院;中国地质大学地球科学与资源学院;东华理工大学; 年：2013 期：02 CN：36-1300/N ISSN：1674-3504 页：47-55 页数：9 分类号：P618.4 语种：中文; 文件大小：824K

摘要

安徽东至兆吉口铅锌多金属矿床与长江中下游成矿带安庆-贵池矿集区南侧毗邻,区域成矿地质条件优越。通过对区域地质背景、矿区地质特征、矿区物化探成果和矿体地质特征进行分析研究,得出兆吉口铅锌矿主要产于兆吉口倒转背斜核部蓟县系环沙组下段细碎屑变质岩中的断裂或裂隙中,综合分析认为兆吉口矿床可能为浅变质岩断裂带中的中低温充填交代脉型铅锌矿床类型。激电测深、磁法和地球化学方法在该矿床具有良好的找矿效果,磁性特征显示兆吉口矿床下部存在隐伏岩体,化探特征显示异常区位于东至断裂与岩体接壤区。综合矿区地质特征和物化探特征,指出该区下一步找矿方向。
        Zhaojikou (Anhui Dongzhi) lead zinc polymetallic deposit is adjacent to southern part of Anqing-Guichi mining area which is in the middle and lower Yangtze Valley metallogenic belt. There are superior regional geological conditions. Based on the study of regional geological background, mining area geological features, orefield geophysical geochemical exploration and orebody geological characteristics, briefly reaches a conclusion that zhaojikou lead-zinc mine is converged in fractures or fissures of central Zhaojikou overturned anticline exactly in lower part of Jixian system ring sand group which is the fine clastic metamorphic rock. Comprehensive analysis shows that Zhaojikou deposit maybe the mid-low temperature filling metasomatic vein-tyre Pb-Zn deposit in the fracture zone of shallow metamorphic rocks. IP sounding, magnetic and geochemical methods deliver good prospecting results. Magnetic characteristics shows there are hidden rock bodies in the lower part of Zhaojikou deposit. Geochemical characteristics shows abnormal area is located between the Dongzhi fracture and the dyke. Based on orefield geological features and geophysical geochemical characteristics, we can reach a new prospecting direction in this area.

引文

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