招平金矿带半壁店矿区地球物理勘查模型及成矿预测

金属矿山 ›› 2016, Vol. 45 ›› Issue (09): 137-143.

招平金矿带半壁店矿区地球物理勘查模型及成矿预测

孟银生^1,2,3，张瑞忠^1,2

1.地质过程与矿产资源国家重点实验室，北京 100083；2.中国地质大学（北京）地球科学与资源学院，北京 100083；3.中国地质科学院地球物理地球化学勘查研究所，河北廊坊 065000

出版日期:2016-09-15 发布日期:2016-10-18
基金资助:
基金项目国家自然科学基金项目（编号：41504063），高等学校学科创新引智计划项目（编号：B07011），中国地质调查局地质调查基金项目（编号：1212011120202，121201108000150003-02）。

Multiple Geophysical Prospecting Model and Metallogenic Prediction of Banbidain Mining Area in Zhaoping Gold Belt

Meng Yinsheng^1,2,3，Zhang Ruizhong^1,2

1.State Key Laboratory of Geological Processes and Mineral Resources,Beijing 100083,China；2.School of Earth Science and Resources,China University of Geosciences （Beijing），Beijing 100083,China；3.Institute of Geophysical & Geochemical Exploration,Chinese Academy of Geological Sciences，Langfang 065000，China

Online:2016-09-15 Published:2016-10-18

摘要/Abstract

摘要： 招平金矿带是我国胶东金矿集区的重要金成矿带。在该金矿带长百余千米的断裂带内及其旁侧已探明金资源储量达千余吨，金矿带中南段覆盖区深部是下一步找矿的核心区域，但覆盖层下的矿化信息难以获取，实现找矿突破难度较大。为此，分析了招平金矿带内不同级别的控矿因素，分别从控矿断裂构造、赋矿蚀变花岗岩、矿化体等3个方面分析了控矿因素的物性特征，厘清了控矿因素的综合地球物理异常表征，明确了矿化体、控矿因素与地球物理异常之间的对应关系，构建了覆盖区深部矿体综合地球物理勘查模型。通过多元地质特征和多层次地球物理技术方法组合分析，定位预测了一处深部成矿靶区，并进行了钻探验证。研究表明：根据区内已知金矿体的物性特征和综合地球物理找矿标志构建的覆盖区深部蚀变岩型金矿综合地球物理勘查模型，有助于解决该金矿带覆盖区深部找矿难题，可有效提高覆盖区深部找矿效率。

关键词: 深部找矿, 覆盖区, 控矿因素, 物性特征, 综合地球物理勘查模型, 成矿预测

Abstract: The Zhaoping gold belt is an important gold metallogenic belt in Jiaodong gold district in China.The gold belt has proven gold reserves more than 1 000 t along and near the fault zone with length of hundred kilometers in Zhaoping gold belt.The deep area under the coverage in the middle-south section of the gold belt is the core area for further prospecting.However，the mineralization information under the cover layer is difficult to obtain，so it is necessary to improve the efficiency of regional prospecting for the deep ore-bodies to achieve the prospecting breakthrough.The different-level ore-controlling factors in the gold belt are analyzed,the physical properties of the ore-controlling factors are conducted comparison analysis from the aspects of ore-controlling fault structure,ore-bearing altered granite and mineralized bodies.The comprehensive geophysical anomalies of the ore-controlling factors are clarified,the corresponding relationship between the ore-bodies,ore-controlling factors and geophysical anomalies are defined.The integration geophysical exploration model of the deep ore-bodies under coverage area in Zhaoping gold belt is established.Based on the above analysis results,a deep metallogenic target area is positioned and predicted,besides that,the drilling verification is also conducted.The study results show that the integrated geophysical prospecting model of the deep area of the altered rock type gold deposit is good for solving the deep prospecting problems under the coverage area of the gold belt,besides that,it also contribute to improving the deep prospecting efficiency under the coverage area of the gold belt.

Key words: Deep prospecting, Coverage area, Ore-controlling factor, Geophysical characteristics, Integrated geophysical prospecting model, Metallogenic prediction

孟银生, 张瑞忠. 招平金矿带半壁店矿区地球物理勘查模型及成矿预测[J]. 金属矿山, 2016, 45(09): 137-143.

MENG Yin-Sheng, ZHANG Rui-Zhong. Multiple Geophysical Prospecting Model and Metallogenic Prediction of Banbidain Mining Area in Zhaoping Gold Belt[J]. Metal Mine, 2016, 45(09): 137-143.

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