青海黑河断陷盆地中浅覆盖区寻找隐伏矿地气普查方法技术研究  

GEOGAS RECONNAISSANCE TECHNIQUE IN THE SEARCH FOR CONCEALED DEPOSITS IN MIDDLE-SHALLOW COVER AREA, HEIHE DOWNFAULTED BASIN, QINGHAI

作　　者：高延光[1] 杨忠芳[1] 汪明启[1] 刘丽华[1] 刘艳青[1] 唐金荣[1] 郭莉[1] 

机构地区：[1]中国地质大学地球科学与资源学院

出　　处：《地质与勘探》2005年第4期73-77,共5页Geology and Exploration

基　　金：中国地质调查局项目(编号:20002010003036)资助。

摘　　要：青海省黑河盆地是北祁连地区一个典型的断陷盆地,具有良好的成矿条件,然而却被白垩纪以来各种运积物覆盖,为探讨该景观条件下寻找隐伏矿地气普查方法的效果,文章采用4个/km2的网格化地气普查方法,圈出明显的异常带,并通过配套的土壤面积测量研究表明,地气测量金属异常元素来源与覆盖层土壤无关,可能反映了深部的矿化或构造。Heihe basin in the Qinghai province is located in the northern Qilian, which is a typical fault basin with excellent metallogenic factors. The basin is covered by different transported overburden since Cretaceous. In order to inquire into effects of geo-gas reconnaissance technique for concealed deposits in this kind of landscape, 4 points/Km2 griding method of geo-gas reconnaissance is adopt to circle distinct anomalous belts. Supported by matching area soil survey, it is indicated that the source of anomalous elements of geo-gas reconnaissance has no relations with overburden soil, and refleet deep-seated mineralization or structures.

关 键 词：北祁连 断陷盆地 地气 隐伏矿 黑河盆地 

分 类 号：P632[天文地球—地质矿产勘探]