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All Journal JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang Jambura Geoscience Review JISIP: Jurnal Ilmu Sosial dan Pendidikan Akuntoteknologi : Jurnal Ilmiah Akuntansi dan Teknologi Ilomata International Journal of Tax and Accounting Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Digital Transformation Technology (Digitech) Jurnal Ekonomi Bisnis, Manajemen dan Akuntansi (JEBMAK) SCIENTIA JOURNAL : Jurnal Ilmiah Mahasiswa
Anton Wijaya
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Agriculture, Biological Sciences & Forestry Arts Humanities Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Law, Crime, Criminology & Criminal Justice Library & Information Science Physics Social Sciences Other

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Stratigraphic Synthesis of the Danau Rayo Geosite: Possible Impact Fragmentation Wijaya, Anton; Setiawan, Budhi; Rochmana, Yogie Zulkurnia
Jambura Geoscience Review Vol 8, No 1 (2026): Jambura Geoscience Review (JGEOSREV)
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jgeosrev.v8i1.35667

Abstract

Lake Rayo in West Sulawesi, Indonesia, has been proposed as a potential meteorite impact structure, yet direct evidence supporting this origin remains limited. This study aims to provide a preliminary stratigraphic and granulometric characterization of Lake Rayo’s basin fill to clarify its genesis and support its geoheritage significance. Core sediment samples were collected from the basin floor and analyzed for grain size distribution, color (Munsell system), texture, and crack morphology using standard laboratory techniques. Seven stratigraphic intervals (BR1–BR7) were identified, showing clear vertical variations in granulometric parameters, sorting, and sediment color. Distinct fragmentation horizons, changes in color, and the occurrence of bedding cracks were interpreted as possible signatures of high-energy events, potentially associated with a meteorite impact. Comparative analysis with established impact structures, such as Lonar and Ries, revealed similar sedimentological features, supporting the impact hypothesis. These findings provide initial scientific evidence for the classification of Lake Rayo as an impact-related geoheritage site in Indonesia. The study also highlights the importance of integrating sedimentological data with future multidisciplinary research—such as geochemical and mineralogical shock analysis—to substantiate the impact origin more robustly. Overall, the results contribute valuable insights for geoheritage conservation, geoeducation, and the broader understanding of rare impact structures in Southeast Asia.
Co-Authors Abdullah, Arken Ardiansah, Rian Budhi Setiawan Budiman Arpan Choiriyah Endang Mulyani Irene Svinarky Lyonita, Vera Moh. Faizal Romdhan, Mohammad Yusri Samaeni, Fera Citra Samara, Aldi Suhendri Suhendri Susanti, Metta Thoyyibah Wi, Peng Windriyani, Eka Yogie Zulkurnia Rochmana