摘要:
通过对曾家溪矿区外围开展1:10 000地质填图和1:10 000土壤地球化学测量,系统总结了矿区的地层、岩性、构造及围岩蚀变等特征,在此基础上,进行了土壤地球化学找矿研究,得出以下几点认识:元素的含量特征及分布型式显示,矿区土壤中W、As、Sb浓度克拉克值和变异系数均较大,元素为对数多峰分布型式,表明这些元素卷入了成矿作用;聚类分析表明,矿区主成矿元素组合为W、Sb、Au、As,其综合异常可作为找矿的直接标志;综合分析地质和地球化学资料,在矿区圈定了4个土壤地球化学异常区,其中Ⅰ号、Ⅲ-1号、Ⅳ号异常带具较好的找矿前景,为下一步找矿工作的重点靶区.
Abstract:
The soil geochemical characteristics of the Zengjiaxi copper-sliver mining area in Hunan have been systematically summa-rized through the geological mapping and soil geochemical survey on the scale of 1:10 000 in this paper. The concentration clarke values and variation coefficients of W,As,Sb in soil are both high,which indicates that these elements were involved in mineralization. The as-sociation of main metallogenic elements consists of W, Sb, As and Au which can be used as the indicator elements for prospecting. Four soil geochemical anomaly belts were delineated based on the geological and heochemical analysis,and among themⅠ,Ⅲ-1 and Ⅳanomaly belts have the better prospecting potential.
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