Interpretasi Struktur Geologi Berdasarkan Fault Fracture Density (FFD) dan Implikasinya Terhadap Potensi Likuefaksi di Daerah Kalibening, Kabupaten Banjarnegara, Jawa Tengah

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Published: May 31, 2021
DOI: https://doi.org/10.17146/eksplorium.2021.42.1.6129
Keywords:
Banjarnegara, Kalibening, struktur, likuefaksi

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Huzaely Latief Sunan
Jurusan Teknik Geologi, Fakultas Teknik, Universitas Jenderal Soedirman
Akhmad Khahlil Gibran
Jurusan Teknik Geologi, Fakultas Teknik, Universitas Jenderal Soedirman
Maulana Rizki Aditama
Jurusan Teknik Geologi, Fakultas Teknik, Universitas Jenderal Soedirman
Sachrul Iswahyudi
Jurusan Teknik Geologi, Fakultas Teknik, Universitas Jenderal Soedirman
Fajar Rizki Widiatmoko
Fakultas Teknologi Mineral dan Kelautan, Institut Teknologi Adhi Tama Surabaya (ITATS)
Asmoro Widagdo
Jurusan Teknik Geologi, Fakultas Teknik, Universitas Jenderal Soedirman
FX Anjar Tri Laksono
Jurusan Teknik Geologi, Fakultas Teknik, Universitas Jenderal Soedirman

Abstract

 The existence of geological structures is often associated with landslides and earthquakes. The Kalibening area is an interesting location for research on that purpose. This area is composed of Pleistocene and Recent rocks units. Based on its stratigraphy, the rocks in the area are truncated by fault structure. It means that the fault in the area is categorized as an active fault. The high morphology and a basin existence on its center indicate that the area formation was controlled by faults. The research is carried out to determine the trend of the geological structures that control the study area. To determine the trend of the geological structure, a structural mapping method of Fault Fracture Density (FFD) map combined with the Bouguer anomaly residual map and hillshade lineaments map is used. In general, the most important thing in the study of structural geology is the geometry of the structural elements. The conceptual model of geological structures is subsequently used to analyze the liquefaction potential of the study area. The interpretation of the structures shows the existence of dextral strike-slip fault followed by companion faults and pull-apart basin that is inferred as the result of normal faulting in the strike-slip mechanism. The dextral strike-slip fault produces a basin filled with loose sediment that is prone to liquefaction in the event of an earthquake and ground motion. This study concludes that the Kalibening area is prone to liquefaction due to the existence of the movement of dextral strike-slip fault, loose sediments that dominate the study area, and shallow groundwater table.


 

Article Details

How to Cite
Sunan, H. L., Gibran, A. K., Aditama, M. R., Iswahyudi, S., Widiatmoko, F. R., Widagdo, A., & Laksono, F. A. T. (2021). Interpretasi Struktur Geologi Berdasarkan Fault Fracture Density (FFD) dan Implikasinya Terhadap Potensi Likuefaksi di Daerah Kalibening, Kabupaten Banjarnegara, Jawa Tengah. EKSPLORIUM, 42(1), 47–54. https://doi.org/10.17146/eksplorium.2021.42.1.6129
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Vol. 42 No. 1 (2021): MEI 2021
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