冀北上黄旗地区水系沉积物地球化学背景特征与找矿远景

在1∶50 000水系沉积物测量的基础上,从元素地球化学参数特征、不同地质单元中元素分布特征、元素地球化学场分布等方面对上黄旗地区地球化学背景特征进行了探讨,指出区内Ag、Pb、Zn、Au、Mo后期叠加富集特征明显,是本区今后勘查找矿工作的主攻矿种;古元古代变质地层和变质侵入岩中Pb、Zn、Ag等元素富集且含量变异系数大,是铅、锌、银多金属矿的潜在矿源层;圈定了闯王沟门铅、锌、银、钼等多金属矿找矿远景区6处。

Geochemical background and characteristics of stream sediments in Shanghuangqi area of Northern Hebei and its prospecting potential

Based on the results of stream sediment survey conducted at 1 ∶50 000 scale in Shanghuangqi area of Northern Hebei,this paper analyzed the geochemical background and characteristics of Shanghuangqi area from the aspects of parameter characteristics of element geochemistry,distribution characteristics of ele-ments in different geologic units and distribution of element geochemical field.Elements like Ag,Pb,Zn, Au and Mo are superimposed and enriched significantly in the late stage and they consist of the main targeted mine types of the future prospecting works in this area.Paleoproterozoic metamorphic strata and metamor-phic intrusive rocks with elements like Pb,Zn and Ag which are significantly enriched and have high coeffi-cient of content variation were potential source beds of Pb-Zn-Ag polymetallic deposits.At last the author blocked out 6 prospective areas for prospecting of Pb-Zn-Ag-Mo polymetallic deposits which includes Chuang-wanggoumen deposit.