A Study of Application of Geogas Survey in Yexian-Dengxian-Nanzhang Geoscience Profile
地气测量在叶县—邓县—南漳地学剖面研究中的应用

The geoscience profile crosses the southerm margin of North China platform, Qinling orogenic belt and the notherm margin of Yangtze platform.Systematical sampling of soil-gas, soil and aerosol was conducted along the profile and determination of micro-elements Cr, Co, Ni, Cu, Ph, Zn and gaseous Hg,Rn, CH4,and CO, are performed. Based on the spatial distribution of some microelements and gas composition as well as geological and seismic data, relationship between anomalies and rock types,geological stuctures and mineralization targets are discussed. The results reveal that Kuanping Group and Erlangping Group are the favorable formations for searching polymetals deposits. LongwangJi- Longmenji arca is a promising area for oil-gas.Fault zone F(14) near the Liaohe River would be a significant target for gold dePOSits. The experiment results show that geogas survey is of good potential significance in prospecting for deep geological structures.