摘要
为了解广西平桂地区锡矿土壤离子电导率异常特征,研究不同种类离子的含量变化关系对电导率的贡献大小,为解释锡矿土壤离子电导率异常的形成机制提供理论依据。对广西平桂地区锡矿的土壤离子电导率异常进行研究,结果表明:①在已知锡矿体上测出了清晰的土壤离子电导率异常,异常形态呈典型双峰形态"兔耳"状或"单峰"状,异常垂直指示锡矿体的赋存位置;②弄清了锡矿体组成土壤离子电导率异常的离子成分特征,其成分主要是SO42-、Ca2+、HCO3-、Cl-、Fe3+、Mg2+、Na+、K+、Mn2+、F-等一套水可溶性离子,经过相关分析得出锡矿土壤离子电导率异常与各种水可溶性离子的相关系数SO42->Ca2+>HCO3->Cl->Fe3+>Mg2+>Na+>K+>Mn2+>F-;③在未知区的找矿预测中找到2个具有成矿远景的土壤离子电导率异常,经深部工程验证找到了隐伏锡矿体。
Although the conventional geochemical methods are thought better effect methods which are used to prospect and explore in the all kinds of coverage area, it is not clear what their most effective role is in prospecting in the Karst residual slope laminated coverage area Pinggui area in Guangxi province. This research is mainly concerned with a study of anomaly characteristics of soil ionic conductivity on tin deposits in Pinggui area in Guangxi Province. The investigation to test the validity of prospecting in the approach was carried out above the known ore bodies revealed that the clear soil ionic conductivity anomalies are detected over ore bodies, and which appeared two typical summits resembling shapes which are look like a ＂rabbit ear＂ or ＂hard iron teeth＂. Further research needs to be conducted to determine by experiment that the main water soluble ions which make up the anomaly of soil ionic conductivity of tin deposits are including SO42 , Ca2＋, HCO3-, CI-, Fe3~, Mgz＋, Na＋, K~, Mn2＋ and F- , and their relation degree between the tin anomaly are as follow： SO42-〉CaZ＋〉HCO3〉CI 〉Fea＋〉Mg2＋〉Na＋〉K＋〉Mn2＋〉F-.This fruitful work provided theory basis to explain soil ionic conductivity anomaly. On the basis of it, we finally carried out prospecting prediction by this method in the area and found two predictive targets where five ore bodies were found by the engineering drill.
出处
《地质通报》
CAS
CSCD
北大核心
2013年第5期784-789,共6页
Geological Bulletin of China
基金
中国地质调查局项目<独立供电偶极子地电化学技术规范化研究>(编号:1212011120207)
广西教育厅科研项目<地电化学法寻找隐伏金矿研究>(编号:200911ZL53)
关键词
土壤离子电导率
异常特征
离子成分
找矿预测
广西平桂锡矿
soil ionic conductivity
anomaly characteristics
ionic components
prospecting prediction
Pinggui tin deposits inGuangxi province
