Tidak ada Data DosenTidak ada Data DosenDRAJAT RACHMAT SANTOSO2024-05-222024-05-222007https://repository.unpad.ac.id/handle/kandaga/140710070098ABSTRACT Lembahtrilaya Geothermal field is located about 180km at north of bengkulu city. Lembahtrilaya Geothermal field is on exploration stage and have one exploration well there is LT well. This research is for knowing geothermal model system of Lembahtrilaya geothermal field by using LT well data, geochemical surface data and geophysich data. At LT well there are four kind of litology there is altered volcanic breccia, altered andecite basaltic breccias, altered andecite breccias and altered andecite. Alteration zone at LT well divided into two, there is argilic alteration zone and propylitic alteration zone. Geochemical data which proceed is produce chlorida hot water that can use as geothermometer. Reservoir temperature based on alteration mineral, well thermometer and water geochemical data produce temperature between 200o C – 220o C. Upflow zone is located around Hululais Hill and outflow to north – northeast research area. Hot source at research area is estimate comes from rest activity of BT Hululais volcanism.Lembahtrilaya Geothermal field is located about 180km at north of bengkulu cityTidak ada keywordTidak ada keyword