Eksporasi geokimia tidak lanjut daerah sungai angkat merupakan realisasi kerja seksi gekimia eksplorasi , proyek eksplorasi bahan galian logam,dalam PELITA V ,prioda 1993-1994
biblographic reference: holder M T.1989. GRDC 1:250,000 scale geological and report series . proposals for content and format for southern sumatera report. southern sumatra geological and mineral exploration project reprt series,no.1 . directorate of mineral resources/geological research and developement centre,bandung,indonesia.