云南所作底-大山脚地区物化探异常特征及多金属找矿预测  

Geochemical and Geophysical Anomaly Characteristics and Polymetallic Exploration Prediction in the Suozuodi-Dashanjiao Area,Yunnan

作　　者：信太岭 覃柏松 杨超 XIN Tailing;QIN Baisong;YANG Chao(Shandong Zhengyuan Geological Resources Exploration Co.,Ltd.,Jinan,Shandong 251600,China;Shandong Zhengyuan Geological Exploration Institute of China Metallurgical Geological Administration,Jinan,Shandong 251600,China)

机构地区：[1]山东正元地质资源勘查有限责任公司,山东济南251600 [2]中国冶金地质总局山东正元地质勘查院,山东济南251600

出　　处：《中国锰业》2024年第6期89-94,共6页China Manganese Industry

基　　金：中国地质调查局地质调查基金项目(编号:12120113050800)。

摘　　要：云南所作底-大山脚地区位于滇东南逆冲-推覆构造带内,具有丰富的多金属矿床。为预测该地区的多金属找矿靶区,采取地质条件分析、物探异常特征研究以及化探异常分析等手段对该地区进行综合研究分析。结果显示,所作底-大山脚地区存在明显的物化探异常,特别是JDIP1和JDIP2激电异常,以及以Sn-Pb-W-Bi-Au-As-Sb-Zn-Ag-Be-Cu元素组合的化探异常,与区域构造展布一致,对矿化分布具有很好的指示作用。结论指出,矿化集中分布于花岗岩体周围,花岗岩岩浆既是矿物质来源,也是矿床形成的动力来源。所作底锡铜多金属找矿预测区和新田银铅锌多金属找矿预测区具有较好的找矿前景。The Suozuodi-Dashanjiao area in Yunnan is located within the Southeast Yunnan reverse-thrust tectonic belt and has great potential for polymetallic deposits.To predict the polymetallic exploration target areas in this region,a comprehensive research and analysis were conducted using methods such as geological condition analysis,study of geophysical anomaly characteristics,and geochemical anomaly analysis.The results show that the Suozuodi-Dashanjiao area exhibits significant geophysical and geochemical anomalies,especially the JDIP1 and JDIP2 induced polarization anomalies,as well as the geochemical anomalies characterized by the combination of Sn-Pb-W-Bi-Au-As-Sb-Zn-Ag-Be-Cu elements.These anomalies are consistent with the regional structural distribution and effectively indicate the distribution of mineralization.The conclusion indicates that the mineralization is concentrated around the granite body,and the granite magma is both the source of minerals and the driving force for the formation of the deposit.The Suozuodi tin-copper polymetallic exploration prediction area and the Xin Tian silver-lead-zinc polymetallic exploration prediction area have great exploration prospects.

关 键 词：多金属找矿 地质条件 激电异常 化探异常 找矿预测 

分 类 号：P631[天文地球—地质矿产勘探] P632[天文地球—地质学]