隐伏金属矿床及背景区地气组分特征

he features of trace elements and REE in geogas show that the compositions of geogas in background depend on neighboring geological bodies including soil and wallrocks and are consistent with the Clarke and the anomalous compositions of geogas above mineralized zones are rich in chalcophile elements in several to hundreds of orders .The distribution of big radius lithophile and high energy elements indicate that the curve of geogas in background is controlled by geological media and slightly different from that in anomaly area.It can be concluded that the elements in geogas mainly come from the adjacent geological bodies,only partially from underlying mineralizations in anomalous area and geogas survey can be used as a tool for mineral exploration in overburden.