| 要悦稳,董根旺,杨柳,田达志,习肖伟,王牧,刘媛媛.地磁参数在航磁岩性填图中的应用——以青阳—芜湖地区为例[J].地质找矿论丛,2021,36(1):83-89 |
| 地磁参数在航磁岩性填图中的应用——以青阳—芜湖地区为例 |
| Application of ground magnetic parameters to aeromagnetic lithologic mapping—A case study of Qingyang-Wuhu area in Anhui province |
| 投稿时间：2020-09-22 修订日期：2021-01-12 |
| DOI：10.6053/j.issn.1001-1412.2021.01.010 |
| 中文关键词: 航磁 岩性填图 磁化率 磁性特征 安徽省 |
| 英文关键词:aeromagnetic lithologic mapping magnetic susceptibility magnetic characteristics Anhui province |
| 基金项目:中国地质调查局地质调查工作项目“安徽青阳-芜湖地区1：5万航空物探调查”（编号：DD2016006645）资助。 |
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| 中文摘要: |
| 安徽青阳—芜湖地区是长江中下游成矿带重要地区之一。为进一步寻找新的矿产地，2017年在该区进行了1：5万航空磁法测量。在岩性填图工作中，开展了系统的岩（矿）石的磁化率调查，经分类统计实测资料，总结区内地层、侵入岩等各类岩（矿）石的磁性特征。结果表明：沉积岩一般呈弱磁性或无磁性；火山岩不发育，仅在白垩系、奥陶系个别地层有凝灰岩出露，有一定磁性；侵入岩不同岩性间磁化率具有一定的差异，可引起强度不同的正异常。不同岩性间磁化率差异为航磁岩性填图提供了依据。将实测磁化率应用于航磁岩性填图，圈定了姚村、麻姑山（推测隐伏）、桥头埠（推测隐伏）等岩体。该研究结果为该地区进一步找矿提供了参考信息。 |
| 英文摘要: |
| The Qingyang-Wuhu area of Anhui province is located at the Middle-Lower Yangtze metallogenic belt. In order to search for new mineral deposits, we conducted aeromagnetic survey at scale 1: 50,000 in this area in 2017. To aid the lithologic mapping we carried out regional rock magnetic susceptibility investigation. Based on statistics of all kinds of measured data, magnetic susceptibility features of strata and intrusive rocks in the area are summarized. The result suggests that the sedimentary rocks are generally weakly-magnetic or non-magnetic; the volcanic rocks, certain magnetic, occurring as tuff outcrops only in Cretaceous and Ordovician strata; lithologies of intrusive rocks different in magnetic susceptibility causing positive anomalies with different intensities. According to the mapping are line out the Yaocun, Magushan and Qiaotoubou hidden intrusive bodies. This study will provide reference for further prospecting in the area. |
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