滇东南大黑山一带矿产地球化学普查信息提取

Information Extraction of Mineral Geochemistry Survey in the Daheishan Area of Southeastern Yunnan Province

通过滇东南大黑山一带1∶5万水系沉积物测量,以矿产地质调查为目的的地球化学普查获得海量地球化学数据信息,结合区域成矿地质背景和成矿特征有效提取与Mn、Sb、Pb、Zn等成矿元素有关的地质与矿产地球化学信息,总结成矿元素及其相关元素在时空上的分布规律,研究穹窿背斜核部及其两翼、北东向和北西向断裂带附近的碳酸盐岩与火山岩建造、含锰岩系法郎组中元素地球化学特征,建立主要成矿元素的地球化学找矿模型,在圈定异常、异常查证、优选找矿靶区的基础上,进一步作出远景评价。

A measurement of 1∶50,000 to stream sedimentsw in the Daheishan area of southeastern Yunnan resulted in massive geochemical data,permitting to extract the geological and mineral geochemical information on metallogenic elements such as Mn,Sb,Pb and Zn.Combined with the geological background and metallogenic characteristics of the region,this work summarized the distribution of metallogenic elements and their related elements in time and space,and studied the geochemical characteristics of elements in carbonate and volcanic rock construction and the manganese rocks in Falang Formation of vault anticline core and its two flanks and near the northeast and northwest trending fault zones.Then a geochemical prospecting model of the main metallogenic elements was established,and the prospect evaluation was further made on the basis of anomaly delineation,anomaly verification and optimized prospecting targets.