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All Journal Jurnal Ilmiah Dinamika Rekayasa (DINAREK) Journal of Geoscience, Engineering, Environment, and Technology Jurnal GEOSAPTA Prosiding Seminar Teknologi Kebumian dan Kelautan (SEMITAN Journal of Earth and Marine Technology (JEMT) Darma Sabha Cendekia Pamasa: Jurnal Pengabdian kepada Masyarakat Jurnal Geosaintek Jurnal Pengabdian Masyarakat Terapan Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir
Asmoro Widagdo, Asmoro
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Journal : Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir

 1 
Interpretasi Struktur Geologi Berdasarkan Fault Fracture Density (FFD) dan Implikasinya Terhadap Potensi Likuefaksi di Daerah Kalibening, Kabupaten Banjarnegara, Jawa Tengah Sunan, Huzaely Latief; Gibran, Akhmad Khahlil; Aditama, Maulana Rizki; Iswahyudi, Sachrul; Widiatmoko, Fajar Rizki; Widagdo, Asmoro; Laksono, FX Anjar Tri
EKSPLORIUM Vol. 42 No. 1 (2021): MEI 2021
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/eksplorium.2021.42.1.6129

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.
Geological Structure Control on the Formation of Metal Mineralization at Quartz Veins in Jendi Village, Wonogiri Regency, Central Java Widagdo, Asmoro; Sukadana, I Gde; Indrastomo, Frederikus Dian
EKSPLORIUM Vol. 43 No. 2 (2022): NOVEMBER 2022
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/eksplorium.2022.43.2.6623

Abstract

Quartz veins in the Jendi area and its surroundings are formed by geological structures with distributions and patterns that need to be known. This study uses data on striation, quartz vein orientation, and metal content in quartz veins. The use of this data aims to determine the relationship between the vein direction pattern and its metal mineral content with the main structure that forms it. The results of this study can be useful in determining the structural model and distribution of veins in the study area. The research method was carried out through a series of field and laboratory work. Fieldwork includes measuring striation data, measuring the orientation of quartz veins, and taking quartz vein samples. Studio work includes stereographic analysis of striation data, rosette diagram analysis of vein measurement data, and analysis of metallic element content of quartz veins. The quartz vein mineralization zone in the study area is controlled by a right slip fault with a northwest-southeast trend that forms a transtension zone with a north-south trend. The north-south trending veins are generally thick, long/continuous, and have a high metal content.
Co-Authors Aditama, Maulana Rizki Agung Harijoko Andreas, Roy Bela Agung Pratama, Bela Agung Budi Brahmantyo, Budi Eko Bayu Purwasatriya, Eko Bayu Fadlin Fadlin Frederikus Dian Indrastomo, Frederikus Dian Gentur Waluyo, Gentur Gibran, Akhmad Khahlil I Gde Sukadana Indra Permana Jati Indra Permana Jati, Indra Permana Indra Permanajati, Indra Januar Aziz Zaenurrohman Karisun, Kharisun Kharisun, Kharisun Laksono, Anjar Tri Laksono, FX Anjar Tri Lasmedi Afuan Muhammad Syaiful Aliim Nasution, Annio Indah Lestari Nurlatifah, Maula Prasetya, Yogi Adi Rachmad Setijadi, Rachmad Rif’an, Muhammad Sachrul Iswahyudi Setijadi, Racmad Sri Widodo Agung Suedy Subagyo Pramumijoyo, Subagyo Suman, Huzaeli Latief Sunan, Huzaely Latief Widiatmoko, Fajar Rizki Zaroh Irayani