Identification of Subsurface Rock Structure of Non-Volcanic Geothermal Systems Based on Gravity Anomalies (Terak Village, Central Bangka Regency)

  • Reza Firdaus Department of Physics, Faculty of Engineering, University of Bangka Belitung, Bangka 33172, Indonesia
  • Siska Oktaviyani Department of Physics, Faculty of Engineering, University of Bangka Belitung, Bangka 33172, Indonesia
  • Putri Hardianti Department of Physics, Faculty of Engineering, University of Bangka Belitung, Bangka 33172, Indonesia
  • Tri Kusmita Department of Physics, Faculty of Engineering, University of Bangka Belitung, Bangka 33172, Indonesia
  • Anisa Indriawati Department of Physics, Faculty of Engineering, University of Bangka Belitung, Bangka 33172, Indonesia
DOI: https://doi.org/10.30871/jagi.v5i2.3640

Abstract

Abstract


 


Geothermal manifestations on Bangka Island are found in the villages of Terak, Pemali, Sungailiat/Pelawan, Dendang, Permis, and Nyelanding. The manifestation of hot water in Terak Village, Central Bangka Regency is in the form of 3 hot springs with a surface temperature of 55ᵒC this research is to be carried focus on the structure of the subsurface rock layers using the geophysical method, namely the gravity method. The data used are topography and Free Air Anomaly. The data processing is in the form of Bouguer Correction and Terrain Correction to obtain the Complete Bouguer Anomaly (CBA) value. Then the CBA value is separated from regional anomalies and residual anomalies using the upward continuation method, as well as 2D modeling interpretation (forward modeling). From the research results, it is known that the subsurface rock structure of the non-volcanic geothermal system in Terak Village in the form of sandstone (2.28 – 2.49 gr/cm3) at a depth of 0 – 1.44 km is estimated as caprock, granite (2.77 – 2.78 gr/cm3) at a depth of 0 – 1.8 km is estimated as reservoir rock, and diorite rock (2.87 – 2.99 gr/ cm3) at a depth of 0 – 2 km is estimated as basement rock.


 


 

References

Anderson, D., & Lund, J. (1979). Direct Utilization of Geothermal Energy: A Technical Handbook. United States: https://doi.org/10.2172/6707209.
Anggraini, M., Siregar, R. N., & Singarimbun, A. (2019). Identification of Radioactive Elements of Nyelanding Granite (South Bangka) Using X-Ray Fluorescence Method. Journal of Science and Applicative Technology, 1-7.
ESDM. (2015). Non-Volcanic Geothermal System in Sulawesi. Bandung: Center for Geological Resources, Geological Agency, Ministry of Energy and Mineral Resources.
ESDM. (2017). Indonesia's Geothermal Potential Volume 1. Jakarta: Directorate of Geothermal, Directorate General of New, Renewable Energy and Energy Conservation, Ministry of Energy and Mineral Resources.
Karunianto, A. J., Haryanto, D., Hikmatullah, F., & Laesanpura, A. (2017). Determination of Regional and Residual Gravity Anomaly Using Gaussian Filter Mamuju Region, West Sulawesi. Exploration, 89-98.
Margono, U., Supandjono, R., & E, P. (1995). Geological Map Sheet South Bangka, Sumatra. Bandung: Center for Geological Research and Development.
Pitulima, J., & Siregar, R. N. (2016). Identification of The Geological Structure of Non-Volcanic Hot Water Sources Nyelanding Bangka Selatan Village Using The Wenner Configuration Geolistric Method. Banjarmasin: Proceedings Of SNRT (National Seminar on Applied Research).
Purwoto, E., Rezk, Y., & Simarmata, R. S. (2015). Survey of Heat Flow in Permis Geothermal Area, South Bangka Regency, Bangka Belitung Province. Geological Resource Center.
Putri, D. A., & Harianja, A. K. (2021). Identification of Radiogenic Geothermal Prospects Using Landsat-8 And Gravity In Permis Area. JGE (Journal of Exploration Geophysics), 7(1), 52-70.
Setiawan, D. L., & Adithya, L. (2015). Geothermal Geology and Geochemistry Permis Region, South Bangka Regency, Bangka-Belitung Province. Colloquium: Geothermal Research Group, Center for Geological Resources.
Siregar, A. M., Dewi, I. K., & Ngatijo. (2021). Identification of Granite Rocks In Geothermal Only Prospects Using Magnetic Methods. Spej (Science and Physics Education Journal), 4(2), 62-69.
Telford, W. M., Geldart, L. P., & Sheriff, R. E. (1990). Applied Geophysics (2 ed.). Cambridge: Cambridge University Press.
Widyaningrum, Y., & Kurniawan, W. B. (2019). Characteristics of Heat Sourcing Rocks In Nyelanding Village, Air Gegas District, Bangka Selatan Regency (A Summary). Bangka: Proceedings of the National Seminar
Published
2021-12-01
How to Cite
FIRDAUS, Reza et al. Identification of Subsurface Rock Structure of Non-Volcanic Geothermal Systems Based on Gravity Anomalies (Terak Village, Central Bangka Regency). Journal of Applied Geospatial Information, [S.l.], v. 5, n. 2, p. 539-543, dec. 2021. ISSN 2579-3608. Available at: <http://704209.wb34atkl.asia/index.php/JAGI/article/view/3640>. Date accessed: 28 nov. 2024. doi: https://doi.org/10.30871/jagi.v5i2.3640.
Citation Formats
Issue
Vol 5 No 2 (2021): Journal of Applied Geospatial Information (JAGI)
Section
Articles
Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Most read articles by the same author(s)

Obs.: This plugin requires at least one statistics/report plugin to be enabled. If your statistics plugins provide more than one metric then please also select a main metric on the admin's site settings page and/or on the journal manager's settings pages.