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All Journal Majalah Forum Teknik UGM Bulletin of Scientific Contribution : Geology Jurnal Ilmiah MTG Journal of Degraded and Mining Lands Management Journal of Geoscience, Engineering, Environment, and Technology Jurnal Penelitian Sains PROMINE Jambura Geoscience Review Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) BIOVALENTIA: Biological Research Journal Jurnal Universal Technic Journal of Geology Sriwijaya
Edy Sutriyono
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Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Mathematics Medicine & Pharmacology Physics Transportation

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Journal : Jambura Geoscience Review

 1 
Geology Structural Analysis of the Tanjung Betung II Region, Bengkulu: Recognized through Geological Mapping and Lineament Analysis Sari, Devi Puspita; Sutriyono, Edy
Jambura Geoscience Review Vol 6, No 2 (2024): Jambura Geoscience Review (JGEOSREV)
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jgeosrev.v6i2.23721

Abstract

The research area is located in the Tanjung Betung II area, North Kaur, Bengkulu. This research was conducted to determine the geological structure and its relationship with the graben system in the Bengkulu basin by identifying and measuring structural components recorded in rock units. In interpreting deformation mechanisms, this research utilizes surface data obtained from geological structure mapping and lineament analysis based on Digital Elevation Model (DEM) images. Field observations on outcrops have identified five types of structures that have a general northwest-southeast trend, hereinafter referred to as the Manau IX fault, Bunian fault, Tanjung Kurung fault, Aek Kule syncline and Padang Manis fault. This structure may be associated with a graben system that formed in the late phase of basin evolution in the Neogene. Importantly, the structures recorded in the outcrop sequence may be the result of tectonic deformation that occurred during the Late Neogene, coinciding with the start of the Barisan orogeny.
A Study Of The Late Neogene Tectonic Deformation of the Kayu Ajaran Region, South Bengkulu, Bengkulu Andrian, Fikri; Sutriyono, Edy
Jambura Geoscience Review Vol 7, No 2 (2025): Jambura Geoscience Review (JGEOSREV)
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jgeosrev.v7i2.31667

Abstract

This study investigates the tectonic deformation history of the Kayu Ajaran area in South Bengkulu through integrated geological structure mapping and Digital Elevation Model (DEM)-based lineament interpretation. The research focuses on reconstructing the sequence of tectonic events that occurred during the Late Neogene within the Bengkulu Forearc Basin, a region known for its complex tectonic setting. Fieldwork and remote sensing analysis identified twelve major structural features, comprising eight folds and four faults. These structures predominantly trend northwest–southeast (NW–SE), indicating a compressional stress regime oriented northeast–southwest (NE–SW). The fold geometries, ranging from upright to steeply inclined types, and fault types, including thrust, reverse, and strike-slip, suggest the reactivation of earlier Paleogene extensional structures during the Neogene compressional phase. Stereographic and kinematic analyses were used to determine the orientation of principal stress axes (σ1, σ2, σ3), supporting the interpretation of inversion tectonics. DEM-based lineament analysis enhanced the identification of structural trends and fault zones, especially in areas with limited outcrop exposure. The study provides a clearer understanding of the progressive tectonic deformation in the region and fills critical gaps in the structural characterization of the Kayu Ajaran area. These results contribute to broader regional tectonic models of southwest Sumatra.
Co-Authors ambarisa, azizah okta Andrian, Fikri Astria Denita Budhi Setiawan Budhi Setiawan Devi Puspita Sari, Devi Puspita Eddy Ibrahim Gumanti, Johnnedy Gumanti, Johnnedy Gusti, Ugi Kurnia Harnani, Harnani Harnani, Harnani Heriani, Nova Lokon, Beskian Merri Jayanti Mochammad Malik Ibrahim Pebrianto, Rosihan Pramana, Alfaris Hadi Rahmadini, Sesaria Ramadhani, Jesica Nabilah Rastra, Rastra Yandra Satya Nugraha Rio Hanzra Adjie Pamungkas Salni Silaban, Ganda Tua Gilbert Suci Adelia Rahmawati Wioso, Yosaphat Bismo Zaid, Zaki Nurul Zainal, Pradana Arviano