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All Journal Journal Geological Processes, Risks, and Integrated Spatial Modeling
Momongan, Andrew
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Energy Engineering Environmental Science

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GEOLOGI DAERAH LANSOT DAN SEKITARNYA, KECAMATAN TARERAN, KABUPATEN MINAHASA SELATAN, SULAWESI UTARA: GEOLOGI DAERAH LANSOT DAN SEKITARNYA, KECAMATAN TARERAN, KABUPATEN MINAHASA SELATAN, SULAWESI UTARA Mewengkang, Berliano; Momongan, Andrew; Rachmadhan, H.D.
Journal Geological Processes, Risks, and Integrated Spatial Modeling Vol 3 No 1 (2025): Journal Geological Processes, Risk and Integrated Spatial Modeling
Publisher : LPPM Universitas PRISMA

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Study area is located in North Sulawesi, precisely in Lansot Village, Tareran District, South Minahasa Regency. This research aims to investigate the geological conditions of the area, including geomorphological parameters, stratigraphy, petrology, and petrography, as well as to reconstruct its geological history, which will be presented in a 1:25,000-scale geological map. The methods employed in this study include SRTM image analysis, field observations, and laboratory analysis of rock samples.Geomorphologically, the study area is divided into three landform units: the remaining hills (VD4), Dissected Volcanic Slopes (VD2), and Pyroclastic Ridge Flow (V12). Stratigraphically, the rock succession in the area, from oldest to youngest, consists of: Rumoong Lansot Tuff, Lapi Tuff, and Tumaluntung Tuff. The geological structures in the area are the result of rock and crustal deformation that has occurred over thousands of years. The geological history of the study area began when it was still part of the ancient Tondano volcano, which later collapsed due to a major explosive eruption, giving rise to younger volcanic centers that became the sources of Quaternary volcanic rocks (Qv).
POTENSI GEOWISATA DAERAH KECAMATAN RATATOTOK DAN SEKITARNYA MELALUI ANALISIS GEOSITE DAN GEOMORPHOSITE Momongan, Andrew
Journal Geological Processes, Risks, and Integrated Spatial Modeling Vol 1 No 01 (2023): Journal Geological Processes, Risks, and Integrated Spatial Modeling
Publisher : LPPM Universitas PRISMA

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The Ratatotok area and its surroundings have attractive geotourism potential which includes plains and coastal elements. Morphologically, this area has varied landscapes ranging from lava flowing hills, karst hills, alluvial plains, headlands and bays, geological structure control areas to coral reef exposure in shallow seas. Researchers assessed the feasibility of development using the initial approach of geosite and geomorphosite analysis. Five geosite and geomorphosite locations were found in the study area including Tanjung Mangkit, Gamping Ratatotok Cave, Megawati Soekarno Putri Botanical Garden area, Tanjung Buyat–Lakban, and Lake Buyat. The feasibility assessment results show the value of the five geotourism prospect locations sequentially, namely 59.5%, 50%, 70.3%, 60% and 58%. From the research results, the reclamation area for the Megawati Soekarno Putri Botanical Garden is very feasible to be developed into a geotourism object, as well as Tanjung Buyat–Lakban which is categorized as feasible for development, while the other three locations still need to develop main and supporting infrastructure. The development of an integrated geotourism area can help develop geotourism potential and increase people's welfare through the ecotourism sector.
Geologi Daerah Likupang Satu dan Sekitarnya Kecamatan Likupang Timur Kabupaten Minahasa Utara Sulawesi Utara Rumajar, Reyva; Momongan, Andrew
Journal Geological Processes, Risks, and Integrated Spatial Modeling Vol 2 No 2 (2024): Journal Geological Processes, Risk and Integrated Spatial Modeling
Publisher : LPPM Universitas PRISMA

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Administratively, the research area is located in Likupang Satu, Likupang Timur District, North Minahasa Regency, North Sulawesi, with geographical coordinates at UTM zone 51N 728895 – 732851 mT and 180463 – 184492 mU. This study was conducted to understand the geological conditions of the research area, including its geomorphology, stratigraphy, geological structures, and geological history. The research methodology involved several stages: preparation, fieldwork, data processing, and data presentation. The results of the study show that the geomorphology of the research area is divided into five units: Lava Flow Ridge Unit, Pyroclastic Flow Ridge Unit, Lava Flow Plain Unit, Pyroclastic Flow Plain Unit, and Swamp Plain Unit. The stratigraphy of the area consists of four rock units arranged from oldest to youngest: Andesite Lava Igneous Rock Unit, Tuff Unit, Sandstone Unit, and Alluvial Deposit Unit. The geological structure in the area is characterized by jointed faults. The geological history of the area during the Quaternary period indicates that the andesite lava igneous rock was formed from the eruption of an ancient volcano, flowing through the research area. Subsequently, pyroclastic tuff was deposited on top of the lava rock, followed by the deposition of sandstone, and finally, the alluvial deposits have continued to accumulate up to the present day.
Co-Authors Mewengkang, Berliano Rachmadhan, H.D. Rumajar, Reyva