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Edy Sutriyono
Universitas Sriwijaya
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Mekanisme Pembentukan Struktur Geologi Daerah Batu Ampar Dan Sekitarnya, Kabupaten Bengkulu Selatan, Provinsi Bengkulu Zaki Nurul Zaid; Edy Sutriyono; Ugi Kurnia Gusti
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1685

Abstract

This study examines the mechanisms of geological structure formation in the Batu Ampar area and its surroundings through field geological mapping and interpretation of Digital Elevation Model (DEM) imagery data. Outcrop identification was conducted to determine the types of structures in tectonically deformed rocks. The observations reveal several geological structures, including the Air Kedurang I Anticline, Air Kedurang I Syncline, Air Kedurang II Anticline, Air Kedurang II Syncline, Air Kedurang III Anticline, and the Batu Ampar Thrust Fault. Structural element analysis was carried out using Win Tensor and Dips software. The analyzed data include plane orientations (strike and dip) and pitch for fault structures, while fold analysis utilized orientation data from both fold limbs. Stereonet analysis and DEM interpretation indicate that the structural orientations and surface relief patterns predominantly trend northwest–southeast (NW–SE). The results suggest that compressional forces during the Early to Late Pliocene led to fold formation, which continued into the Pleistocene and triggered the development of the Batu Ampar Thrust Fault. Overall, the geological structures in the study area are interpreted to have formed due to sustained NW–SE–oriented tectonic activity from the Pliocene to the Pleistocene.
Analisis Geomorfologi pada Daerah Kinal dan Sekitarnya, Kabupaten Kaur, Provinsi Bengkulu Ugi Kurnia Gusti; Alfaris Hadi Pramana; Edy Sutriyono
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1750

Abstract

The Kinal area and its surroundings in Kaur Regency, Bengkulu Province, are geomorphologically influenced by regional tectonic activity associated with the Bukit Barisan structural system and sedimentary formations of the Lemau Formation. These regional geological conditions control the development of structural, fluvial, karst, and denudational landforms in the study area. The purpose of this study is to analyze the geomorphological characteristics of the Kinal area based on the genetic landform classification of Van Zuidam (1985). The research method applies a geomorphological approach consisting of morphographic, morphometric, and morphogenetic analyses using DEMNas and SRTM data supported by field verification. Landform classification was conducted genetically through interpretation of slope classes, elevation, drainage patterns, lithology, and geomorphic processes. The results indicate six main geomorphic units, namely structural fault ridges, alluvial plains, channel bars, karst hills, weakly dissected denudational hills, and strongly dissected denudational hills, with elevations ranging from 150 to 450 meters above sea level. Drainage patterns are predominantly dendritic and sub-dendritic, reflecting lithological variation and structural control under intensive denudational processes. These findings demonstrate that regional tectonics and lithological resistance play a significant role in controlling geomorphic evolution and landscape development in the Kinal area.
Co-Authors Agung Forma Sandi Ahmad Thoriq Rabbani Al Ula Alfaris Hadi Pramana Anisa Muflihani Feqqi Indah Rini Gilang Gilang Ishmi Khafishah Nasution Jasmin Arya Alfalah M. Malik Ibrahim M. Taufik Toha Mochammad Malik Ibrahim Rizky Rachmadi Pratomo Sesaria Rahmadini Siska Wulandari Ugi Kurnia Gusti Zaki Nurul Zaid