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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.
Geosite Potential Assessment Using the Modified Geosite Assessment Method (M-GAM) in North Musi Rawas Regency Lee, Jason; Setiawan, Budhi
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.v8i1.34660

Abstract

This study assesses the geosite potential of two emerging geotourism locations Rayo Lake and Sosokan Waterfall in North Musi Rawas Regency using the Modified Geosite Assessment Method (M-GAM). The research aims to address the limited empirical application of M-GAM in developing geotourism regions of Indonesia, thereby filling an important methodological and regional gap. The assessment incorporates expert and visitor perceptions to evaluate Main Values (MV) and Additional Values (AV) across geological, educational, and touristic criteria. Field surveys and questionnaire-based evaluations were conducted with 22 experts and 55 visitors. The results show that Rayo Lake attained a high MV score and a moderate AV score, placing it in quadrant Z33, indicating strong geological significance supported by adequate visitor-related attributes. In contrast, Sosokan Waterfall was positioned in quadrant Z22, reflecting moderate performance in both MV and AV categories, primarily constrained by limited infrastructure and accessibility. These findings confirm that geological attributes alone are insufficient to elevate geosite readiness without parallel development of visitor-oriented facilities. The study’s novelty lies in providing the first M-GAM-based comparative assessment for geosites in North Musi Rawas, offering actionable insights for regional planning. Strengthening infrastructure, interpretive media, and accessibility is recommended to optimize geotourism development strategies.
Kajian Pragmatik pada Kosakata dan Fonetis Bahasa Penderita Afasia Global Santoso, Nugroho Ponco; Andayani, Andayani; Setiawan, Budhi
Bahasa dan Seni: Jurnal Bahasa, Sastra, Seni, dan Pengajarannya Vol. 46, No. 2
Publisher : citeus

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Aphasia is a language disorder caused by brain injury. This study aimed at describing how the pragmatic process and forms on words and language phonemes of those suffering from global aphasia. The study is qualitative research using case study approach. The primary data on this study were collected by purposive sampling whose subject was a global aphasia sufferer who had obtained language rehabilitation during one-year period. The secondary data were taken by using in-depth interview with the family, therapist, and subject's neighborhood. The data were analyzed by comparing the in-depth interview result and the field notes of research. The result showed that the individual with global aphasia still had pragmatic abilities, although s/he could produce meaningless words and sounds. In addition, the individual with global aphasia used gesture and intonation to help convey the idea of her/his utterence. The gestures and intonations performed by the individual with global aphasia were nodding and shaking head, and moving hands; while the forms of intonation changes were sudden change in intonation, imitating sounds, and whisper.
Co-Authors Abdurrahman Hanif Albaihaqi Abimanyu, Gilang Agus Rahman Alamsyah Aldri Frinaldi Alfiati Alfuazri, M. Gilang Ama, Fuad Andayani Andayani Andayani Andili, Agshal Almachzumi Ani Rakhmawati Anton Wijaya Arief Setyawan Arieffiandhany, Riezal Asof, H. Marwan Atikah Anindyarini Atthoriq, Muhammad Hafidz Bakri Bakri Cahyaningrum, Fitria Chaesar, Ari Suryawati Secio Chafit Ulya Charlos Togi Stevanus, Charlos Togi Dedi Rohendi Dianastiti, Firstya Evi Dyah Hastuti, Endang Wiwik Eddy Ibrahim Edi Riawan Edy Sutriyono Ernawati Faradila, Nanda Argi Noer Farahdila, Silvie Felicity, Felicity Fitriani, Aula Gallant Dwi Pangestu Nugroho Akbar Gurada Capah, Ade Indra Harfiandri, Muhammad Said Harnani Harnani Hartati, Restiana Dwi Haryanti, Rini Dwi Hastuti, Nuri Puji Hermawan, Muhammad Alfian Hibatullah, Kevin Nabil Islam, Muhammad Izzul Ismaryanto, Ismaryanto KAMIL, FADHELLATUL Kartika Ishartadiati Karyadi, Rian Khakim, Mokhamad Yusup Nur Kundharu Saddhono Kurniawan, Deviyanto Landia, Karmila Putri Lee, Jason Lusiani Tjandra Marswati, Ceria Masfufatun Masfufatun Muhammad Rohmadi Muhammad Taufik Toha Mukhlis, Muhammad Munib Ikhwatun Iman Murtianingsih Murtianingsih, Murtianingsih Nardi, Rajhi Febri Nugraheni Eko Wardani Oman Abdurahman Pebby Putra Juenda Pebrianto, Rosihan Permana, Lano Adhitya Pranata, Ridho Pratika Yuhyi Hernanda Putri, Atika Nabila Putri, Helen Dwi Putri, Zahrah Belinda RAHARJO, BUDIONO Rahaya, Ivana Septia Raheni Suhita Rahmatullah, Arif Ramadhani, Asri Kamila Rifki Aditya, Rifki Rio, Ferdinan Rizki, Kurnia Rahma Rizkie, Dania Rosihan, Pebrianto Sabaruddin Sabaruddin Safrihady, Safrihady Santoso, Nugroho Ponco Santoso, Nugroho Ponco Sari, Fatrina Aprilia Sarwiji Suwandi Setyaningsih, Arinda Oktariski Simanjuntak, Presli Panusunan Slamet Subiyantoro Sumarwati Suyeda, Fadhil D. Utami, Sri Lestari Wahdini, Lisa Wahyu Wardana, Muhammad Aditya Wisnu Wicaksono, M. Dwiki Satrio Wijaya, Wildan Maulana Wulandari, Atik Sri Wulandari, Zhalsa Yogie Zulkurnia Rochmana Yuliningsih, Yuliningsih