铁岭汎河凹陷地区东部水系沉积物测量地球化学特征及找矿远景预测

摘要

Taking a certain map in the eastern part of the Fan river depression area as an example, through the 1:50 000 stream sediment survey, the distribution characteristics of ore-forming elements in the study area were studied. It was of great potential to ifnd Au and Pb ore deposits and mineralized bodies. By studying the elemental anomalies combine with ore-forming geological conditions and the known mines information, two types of mineralization were found in this area, one was gold mine which related to the silicate rock of quartz vein type and ductile shear zone in Archean old strata;the other one was Pb mine which related to dolomite limestone in Guanmenshan Formation of Changcheng System in Mesoproterozoic erathem. Thus, the region was divided into Muxiangou gold metallogenic prospective area, Xiawangjiagou gold metallogenic prospective area and Qinjiapuzi Pb polymetallic metallogenic prospective area.%以汎河凹陷区东部某图幅为例，通过1：50000水系沉积物测量，对该地区成矿元素的分布特征进行研究，认为研究区寻找Au、Pb矿产潜力较大。通过元素异常特征，结合成矿地质条件及已知矿点信息，认为该区的成矿类型主要有两类，即与太古界老地层石英脉型及韧性剪切带内硅酸盐岩有关的金矿和与中元古界长城系关门山组白云质灰岩有关的铅矿，进而划分出木锨沟、下汪家沟金矿和秦家堡子铅多金属成矿远景区。