青海省哈日扎地区1∶2.5万地球化学测量有效性分析  

Validity analysis of geochemical survey of 1∶25 thousand in Harzha area,Qinghai

作　　者：李永虎 徐云甫[1,2] 谢祥镭 白宗海[1,2] 谭运鸿 LI Yonghu;XU Yunfu;XIE Xiangld;BAI Zonghong;TAN Yunhong(Key Laboratory of Geological Processes and Mineral Resources in Northern Qinghai Tibet Plateau,Xining 810012,Qinghai,China;Qinghai Geological Survey Institute,Xining 810012,Qinghai,China)

机构地区：[1]青海省青藏高原北部地质过程与矿产资源重点实验室,青海西宁810012 [2]青海省地质调查院,青海西宁810012

出　　处：《矿产与地质》2018年第1期138-142,共5页Mineral Resources and Geology

基　　金：中国地质调查局"东昆仑铜镍多金属资源基地调查二级项目"(DD20160013)与"青海省都兰县察汗乌苏河地区1:5万地质矿产综合调查"(121201011000150005-17)共同资助

摘　　要：地球化学成矿元素的确定是建立典型矿床地球化学找矿模型的主要内容。哈日扎铜多金属矿是在东昆仑成矿带发现的中型矿产之一,并建立了以矿化带为单元的成矿元素组合特征。但是因近年来全区内未开展大比例尺化探工作,对全区成矿元素组合特征未做系统的分析。基于区内2016年开展的1∶2.5万地球化学测量工作,采用浓幅分位法确定成矿元素的方法,对比分析1∶2.5万地球化学测量和1∶5万水系沉积物测量在哈日扎地区的优劣,进而说明1∶2.5万地球化学测量在该区的有效性。Determination of geochemical ore forming elements is the main content of establishing geochemical prospecting models for typical deposits. The Harzha copper polymetallic deposit is one of the medium-size minerals discovered in the eastern Kunlun metallogenic belt, and a metallogenic element assemblage charac-teristic with mineralization belt as unit is established. However, in recent years, large-scale geochemical exploration has not been carried out in the whole area, and no systematic analysis has been made on the charac-teristics of ore forming elements in the whole area. Based on the 1 ： 25 thousand geochemistry survey carried out in 2016 in the region, the method of determining the metallogenic element by the concentrated separation method is adopted, and the advantages and disadvantages of the 1 ： 25 thousand geochemical survey and the 1 ： 50 thousand water system sediment measurement in Harzha area are compared and analyzed, and the effectiveness of the geochemical measurements of 1 ： 25 thousand in this area is illustrated.

关 键 词：哈日扎铜矿 1:2.5万地球化学测量 1:5万水系沉积物测量 浓幅分位法 成矿元素 

分 类 号：P632[天文地球—地质矿产勘探] P618.41[天文地球—地质学]