【摘要】 通过在云南个旧石门坎—保和开展1∶10 000地质简测和1∶10 000土壤地球化学测量工作,总结了石门坎—保和地区出露的地层、岩性、构造、围岩蚀变等地质特征。在此基础上,进行土壤地球化学找矿研究。得出以下认识:1微量元素参数统计表明,Sn和Pb元素含量的浓度克拉克值和变异系数均较大,易形成次生晕地球化学异常;2元素组合分析、元素分布型式和元素分形特征显示,Pb-Zn、Au-Cu、Sn元素代表主要成矿元素的次生富集组合,可作为本区较好的找矿指示元素;3综合地质和地球化学数据资料,在研究区内圈定了3个土壤地球化学异常块段,并对各个异常进行解释评价,从而圈定找矿靶区,提出下一步工作建议。更多还原

【Abstract】 By promoting simple geolgical survey and geochemical measurement of soil profile in a scale of 1∶10 000 in Shimenkan-Baohe,Gejiu,Yunnan,the stratum,lithology,structure and wall-rock alteration were summarized.On above basis,a research for soil geochemistry was proceeded,and the following understanding was gotten: 1 the statistical analysis of trace element parameters shows that the clark of concentration and coefficient of variation of Sn and Pb element content is relatively higher,and easily downward enrich to form substantial geochemical anomaly; 2 combinatorial analysis of elements,element distribution patterns and element fractal characteristics show that the Pb-Zn,Au-Cu,Sn represent secondary enrichment combination of the main ore-forming elements,they can be used as the main prospecting indicator elements; 3 analysing intergrating geological and geochemical data information,three geochemical anomaly segments in the study area were discovered,then interpreted and evaluated each soil geochemical anomaly were interpreted and evaluated,finally the prospecting target areas were detimitated and some new suggestions were put forward for work.更多还原