| 文继祖.湘中芭蕉冲金矿土壤地球化学特征及找矿前景分析[J].地质与勘探,2022,58(3):619-628 |
| 湘中芭蕉冲金矿土壤地球化学特征及找矿前景分析 |
| Soil geochemistry characteristics and prospecting potential of the Bajiaochong gold deposit in central Hunan Province |
| 投稿时间：2020-08-11 修订日期：2021-06-15 |
| DOI：10.12134/j.dzykt.2022.03.013 |
| 中文关键词: 土壤地球化学测量 衬值 芭蕉冲金矿 低山丘陵区 湘中 |
| 英文关键词: soil geochemistry,lining value,Gold Mine,Hunan,low mountain and hilly area |
| 基金项目:湖南省核工业地质局科研开发项目(KY2016-304-02)和湖南省核工业地质局青年地质科技人员项目(湘核发2015-85)联合资助 |
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| 中文摘要: |
| 湘中芭蕉冲金矿区为低山丘陵地球化学景观区，位于羌塘-扬子-华南板块东北缘，区内已查明4个工业矿体，矿体受断裂构造控制。本文以该矿为基础进行湖南省中低山丘陵景观区土壤地球化学找矿研究，以供同行参考。在该区完成土壤地球化学测量30 km，采集土壤样品1435件，样品采集深度在30～40 cm，部分采集深度为40～50 cm，成分均为土壤B层。利用多元统计学方法，对Au、Ag、Pb、Zn、As、Sb、Hg七种元素进行R聚类分析、因子分析及地球化学参数统计，确定Au、Ag为主成矿元素，Pb、As为找矿指示元素，运用衬值异常推理了隐伏构造位置，圈定单元素异常39处，综合异常区6处。通过地质工程查证，证明了衬值异常推测的含金构造的存在，发现芭蕉冲F2含金构造和工业矿体，实现该区域的找矿突破。 |
| 英文摘要: |
| Bajiaochong gold deposit area in central Hunan is a low mountain and hilly geochemical landscape area,which is located in the northeast edge of Qiangtang Yangtze South China plate.Four industrial ore bodies have been identified in the area,and the ore bodies are controlled by fault structures.Based on this mine, this paper studies the soil geochemical prospecting in the landscape area of middle and low mountains and hills in Hunan Province for reference.The soil geochemical survey was completed for 30 km in this area,and 1435 soil samples were collected.The sample collection depth was 30~40 cm,and some were 40~50 cm.The composition was soil layer B.Using multivariate statistical method, the R-cluster analysis,factor analysis and geochemical parameter statistics of seven elements of Au,Ag,Pb,Zn,As,Sb and Hg are carried out.It is determined that Au and Ag are the main metallogenic elements,Pb and As are the prospecting indicator elements.The hidden structure position is inferred by using the contrast anomaly,39 single element anomalies and 6 comprehensive anomaly areas are delineated.Through geological engineering verification,it is proved that the gold bearing structure speculated by the abnormal contrast value exists,and Bajiaochong F2 gold bearing structure and industrial ore body are found,so as to achieve a breakthrough in prospecting in this area. |
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