Surface radioactive anomalies at Srisailam sub basin,Cuddapah basin,India  

作　　者：Vishnu Bhoopathi S.Niranjan Kumar R.S.N.Sastry B.Srinivas 

机构地区：[1]Department of Applied Geochemistry,Osmania University [2]Atomic Mineral Directorate for Exploration and Research

出　　处：《Chinese Journal Of Geochemistry》2015年第2期265-271,共7页中国地球化学学报

基　　金：BRNS projects coordinator for given opportunity to utilize the data for Ph.D.,and cooperated for publishing of the article

摘　　要：Surface radioactive survey has been carried with portable gamma ray spectrometer(PGRS) about the 45 km2 around the Srisailam sub basin,the surface radioactive anomalies were found at Chennakesavula gutta in the Srisailam sub basin of Cuddapah basin in the age of meso-neo proterozoic,India.The integrated geochemical and radiometric surveys were conducted as part of research work in the Srisailam basin,it has resulted the locating of surface radioactive anomalies near the Chennakesavula gutta.Secondary uranium minerals are observed along with the fracture planes in the Archean basement granite in the proximity of unconformity contact of Srisailam quartzite.The granite underlies the Srisailam formation and forms the source for possible unconformity related uranium mineralisation in the Srisailam sub-basin evidence by the significant radioactive anomalies.The radioactivity recorded by PGRS reflected uraniferous nature of the radioactivity(Average total counts =195 ppm;U = 202 ppm;Th =22ppm;%K = 4.1,n = 15).Surface radioactive survey has been carried with portable gamma ray spectrometer（PGRS） about the 45 km2 around the Srisailam sub basin,the surface radioactive anomalies were found at Chennakesavula gutta in the Srisailam sub basin of Cuddapah basin in the age of meso-neo proterozoic,India.The integrated geochemical and radiometric surveys were conducted as part of research work in the Srisailam basin,it has resulted the locating of surface radioactive anomalies near the Chennakesavula gutta.Secondary uranium minerals are observed along with the fracture planes in the Archean basement granite in the proximity of unconformity contact of Srisailam quartzite.The granite underlies the Srisailam formation and forms the source for possible unconformity related uranium mineralisation in the Srisailam sub-basin evidence by the significant radioactive anomalies.The radioactivity recorded by PGRS reflected uraniferous nature of the radioactivity（Average total counts =195 ppm;U = 202 ppm;Th =22ppm;%K = 4.1,n = 15）.

关 键 词：放射性异常 表面 印度 分盆 γ射线谱仪 放射性调查 m盆地 地球化学 

分 类 号：P619.14[天文地球—矿床学]