PENYELIDIKAN GEOKIMIA PANAS BUMI LAU SIDEBUK-DEBUK KABUPATEN KARO SUMATERA UTARA

Abstract

This study aims to look at the potential of geothermal energy in Lau-debuk Sidebuk with geochemical investigations. This investigation also measurements in addition to direct measurements performed in chemical laboratories. Measurement and sampling conducted at four points with different height positions measured by the Global Posistion System (GPS). The fourth position of the sample point is at about N coordinates: 30 13 '624 "and E: 980 30' 590" with a height of 1372 m above sea level. The average surface temperature is 479,370 C and the acidic pH of about 6.45 with 1888 micro electrical conductivity / cm. Results of chemical analysis, chart analysis and temperature measurement with Trilinier Geothermometer obtained approximately 479.3700 C reservoir temperature and classified sulfate type water. With gradient decreased 300 C per km then the depths of the reservoir is estimated to 141 km from the surface. Above results illustrate that the hot springsdebuk Sidebuk Lau has great potential as an alternative energy source, but it is necessary to study the geoelectric and geologic.