Preliminary assessment of low to moderate geothermal system over Mt. Pancar area (Bogor) based on remote sensing and geochemical studies

Yunus, Mohammad Syamsu Rosid, A. Armando, T. W. Putranto, F. M. Ruslita

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Preliminary assessment of MT Pancar was carried out using remote sensing and geochemical studies. Remote sensing can be applied as the first guidance in the exploration stage of developing geothermal prospect area. It is usually used to provide an overview of geothermal system before conducting geological survey. In this research, remote sensing using DEM ASTER was performed to give information about lithology and structure of Mt. Pancar geothermal prospect area. Delineation of several lithological unit is based on texture and pattern of the remote sensing image. After field checking, four lithological units have been confirmed covering Mt Pancar area, such as Pancar andesite, Anak Pancar andesite, Kencana-Limo volcanic breccia and Jatiluhur shale. Furthermore, indication of geological structures in NE-SW and NW-SE trend caused by sinistral movement of Baribis thrust is also successfully imaged by remote sensing analysis. The structures probably control the existence of Kawah Merah and Kawah Hitam hotsprings in the Mt Pancar area. Moreover, geochemical studies were also carried out by taking water samples and measuring the temperature and pH. The results show that the temperature of Kawah Merah, Kawah Hitam and Kawah Putih hotsprings are 68.4°C, 58.1°C and 47°C, respectively. All of the hotsprings are classified as neutral hotsprings with pH range of 6.4 to 7.7. It indicates that the whole hotsprings are an outflow zone of Mt. Pancar geothermal system. In addition, based on morphological feature, the heat source is inferred beneath the center of Mt. Pancar. Based on Na/K geothermometry, the subsurface temperature in Mt Pancar geothermal prospect area is estimated in the range of 180 to 190°C. Therefore, Mt Pancar geothermal area can be classified as a low to moderate geothermal system.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017
EditorsRatna Yuniati, Terry Mart, Ivandini T. Anggraningrum, Djoko Triyono, Kiki A. Sugeng
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735417410
DOIs
Publication statusPublished - 22 Oct 2018
Event3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017 - Bali, Indonesia
Duration: 26 Jul 201727 Jul 2017

Publication series

NameAIP Conference Proceedings
Volume2023
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017
Country/TerritoryIndonesia
CityBali
Period26/07/1727/07/17

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