The detailed morphological formation based on geological investigation in Somawangi and surrounding areas, Mandiraja District, Banjarnegara Regency, Central Java

Mudrik Infithor Nurul Qur'an, Siswandi Siswandi, Akhmad Khalil Gibran


Geological mapping is an activity to be able to know the geological conditions of a field. Somawangi Village and its surroundings have a geological history depicting the history of the past that continues until now. This location is located in Mandiraja District, Banjarnegara Regency with a morphology consisting of rock outcrops that record past history which can be used as learning media for the field of geological science. This study aims to determine the geological conditions and resource potential as well as geological disasters at the research site. From the results of the study, it can be concluded that the Geomorphology of the research area can be divided into 3 geomorphological units, namely the Sloping Structural Hills Unit (S3), Structural Sloping Lowland Unit (S1), and Volcano Denudational Hills Unit (V14) with the composition The stratigraphy of the study area is divided into 5 rock units, from the oldest to the youngest, the Somawangi Volcanic Breccia Unit, the Sandstone Unit, the Andesite Lava Unit, the Tuff Rock Unit, and the Kaliwungu Volcanic Breccia Unit. The geological structure of the research area is the Left Fault which is found along the rivers and hills in the eastern area of the research location with an emphasis on northeast-southwest. And the geological potential of the research area can be divided into 2, namely positive potential such as mining of sand and rocks around the river, the use of red soil as a ceramic and brick material, the use of andesite lava which has the potential to mine minerals, and the presence of mineralization alteration in the research area. While the negative potential is the potential for land movement or landslides


Ligung formation, waturanda formation

Full Text:



R. Lisle, P. Brabham, and J. Barnes, Basic geological mapping. 2011. Accessed: Mar. 07, 2022. [Online]. Available:

J. Barnes and R. Lisle, Basic geological mapping. 2013. Accessed: Mar. 07, 2022. [Online]. Available:

W. Dearman, Engineering geological mapping. 2013. Accessed: Mar. 07, 2022. [Online]. Available:

A. D. Howard, “Drainage Analysis in Geologic Interpretation: A Summation,” AAPG Bulletin, vol. 51, no. 11, pp. 2246–2259, Nov. 1967, doi: 10.1306/5D25C26D-16C1-11D7-8645000102C1865D.

B. Brahmantyo and Bandono, “Klasifikasi Bentuk Muka Bumi untuk Pemetaan Geomorfologi pada Skala 1:25.000 dan Aplikasinya untuk Penataan Ruang,” Geoaplika, 2006.

R. A. van Zuidam, “Aerial photo-interpretation in terrain analysis and geomorphologic mapping.,” Aerial photo-interpretation in terrain analysis and geomorphologic mapping., 1986, doi: 10.2307/634926.

F. R. Widiatmoko, R. H. K. Putri, and H. L. Sunan, “The Relation of Fault Fracture Density with the Residual Gravity; case study in Muria,” Journal of Earth and Marine Technology (JEMT), 2021, doi: 10.31284/j.jemt.2021.v1i2.1743.

. O., D. A. Ramadhan P, F. R. W, and R. T. A, “Identification of Geothermal Potential Based on Fault Fracture Density (FFD), Geological Mapping and Geochemical Analysis, Case Study : Bantarkawung, Brebes, Central Java,” KnE Energy, 2015, doi: 10.18502/ken.v2i2.369.

H. H. Wibowo, “Application of Fault and Fracture Density (FFD) Method for Geothermal Exploration in Non-Volcanic Geothermal System; a Case Study in Sulawesi-Indonesia,” 2010.

W. R. Buck, F. Martinez, M. S. Steckler, and J. R. Cochran, “Thermal consequences of lithospheric extension: Pure and simple,” Tectonics, 1988, doi: 10.1029/TC007i002p00213.

“Fault Classification: Discussion | GSA Bulletin | GeoScienceWorld.” (accessed Mar. 07, 2022).

M. J. le Bas and A. L. Streckeisen, “The IUGS systematics of igneous rocks,” Journal of the Geological Society, 1991, doi: 10.1144/gsjgs.148.5.0825.

F. J. Pettijohn, Sedimentary Rocks (third edition), 3rd ed. San Francisco: Harper & Row Publishers, 1975.

W. H. Condon, L. Pardyanto, K. B. Ketner, T. C. Amin, and S. Gafoer, “Peta Geologi Lembar Banjarnegara dan Pekalongan,” Bandung, Indonesia, 1996.

F. J. Pettijohn, P. E. Potter, and R. Siever, “Sand and Sandstone,” Soil Science, 1974, doi: 10.1097/00010694-197402000-00013.

S. Bronto, “Fasies gunung api dan aplikasinya,” Indonesian Journal on Geoscience, 2006, doi: 10.17014/ijog.vol1no2.20061.

Condon W. H., Pardyanto L., Ketner K. B., Amin T.C., Gafoer S., and Samodra H., “Geological map of the Banjarnegara and Pekalongan sheet, scale 1:100.000,” Bandung, 1996.



  • There are currently no refbacks.

Journal of Earth and Marine Technology (JEMT) published by LPPM-ITATS is licensed under a Creative Commons Attribution 4.0 International License.
Based on a work at

ISSN: 2723-8105 (LIPI)


Indexed by:



Cooperated with:



suggested use of reference manager, similarity check, and proofread