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Journal Geological Processes, Risks, and Integrated Spatial Modeling
Published by Universitas Prisma
ISSN : -     EISSN : 30464935     DOI : -
Core Subject : Science, Social, Engineering,
Energy Engineering Environmental Science
"Journal Geological Processes, Risks, and Integrated Spatial Modeling" (Jurnal Proses Geologi, Risiko, dan Pemodelan Spasial Terintegrasi) E-ISSN 3046-4935. Topik ini melibatkan pemahaman tentang berbagai proses geologi, risiko yang terkait dengan proses geologi, serta penerapan teknik pemodelan spasial untuk memahami dan mengelola risiko sebagai upaya pembangunan berkelanjutan. Proses geologi mencakup berbagai fenomena dan peristiwa yang terjadi di dalam maupun permukaan Bumi, seperti pergerakan lempeng tektonik, erosi, sedimentasi, aktivitas vulkanik, dan sebagainya. Proses geologi dapat menjadi pertimbangan terhadap risiko geologis dan dapat menjadi rujukan data untuk mengetahui pengaruh geologi terhadap lingkungan, dan infrastruktur. Seperti gempa bumi, letusan gunung api, longsor, erosi pantai, banjir, dan pencemaran tanah dan air oleh bahan kimia. Perkembangan ilmu dan data mengenai berbagai jenis proses geologis, faktor-faktor yang mempengaruhinya, serta konsekuensi sosial, ekonomi, dan lingkungan yang terkait. Jurnal ini juga membahas mengenai Pemodelan spasial terintegrasi melibatkan penggunaan teknologi untuk memvisualisasikan dan menganalisis data geologi secara spasial. Identifikasi pola dan tren, pemodelan risiko, serta pengambilan keputusan dalam pengelolaan risiko geologis.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Geologi
Articles 28 Documents
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GEOLOGI DAERAH MAEN DAN SEKITARNYA, KECAMATAN LIKUPANG TIMUR, KABUPATEN MINAHASA UTARA SULAWESI UTARA Momongan, A.J.; Moningka, M.M.; Perangin Angin, P
Journal Geological Processes, Risks, and Integrated Spatial Modeling Vol 2 No 1 (2024): Journal Geological Processes, Risks, and Integrated Spatial Modeling
Publisher : LPPM Universitas PRISMA

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Abstract

Administratively, the research location is situated in the Maen area and its surroundings, Likupang Timur District, North Minahasa Regency, North Sulawesi, with UTM (Universal Transverse Mercator) coordinates 51 N 732393 mE – 736394 mE and 179973 mN – 183983 mN using the WGS 1984 datum. The research area covers an area of 4x4 square kilometers. Maen village is located in an area rich in energy and mineral resources potential. Previous geological mapping in this area was conducted on a regional scale. Therefore, the author is interested in conducting detailed mapping at a 1:10,000 scale in the Maen area and its surroundings, Likupang Timur District, North Minahasa Regency, North Sulawesi. The geomorphology of the research area comprises four geomorphological units: Piroclastic Flow Ridge unit, Lava Flow Ridge unit, Coastal Plain unit. The stratigraphy in the research area consists of four rock units arranged from oldest to youngest: Coarse Tuff unit, Lapilli Stone unit, Andesite unit, and Lake Deposit unit. The geological structure in the research area includes weathered joint fractures oriented generally northeast to southwest. Geological history in the research area began in the Pliocene epoch with the deposition of the Coarse Tuff unit, followed by the deposition of the Lapilli Stone unit in the Pleistocene epoch, and simultaneous deposition of the Andesite unit in the same Pleistocene period. The topmost layer consists of Alluvial Deposit unit deposited from the Holocene epoch to the present.
INTERAKSI VULKANIK DAN TEKTONIK DI PULAU SANGIHE DAN GUNUNG AWU: SEBUAH STUDI INTEGRATIF DALAM KONTEKS GEOLOGI INDONESIA Rachmadhan, H. D.; Djaya, J.H.M.
Journal Geological Processes, Risks, and Integrated Spatial Modeling Vol 1 No 2 (2023): JGPRISM: Journal Geological Processes, Risks and Integrated Spatial Modeling
Publisher : LPPM Universitas PRISMA

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This study delves into the geology and geodynamic processes of Sangihe Island and Mount Awu in North Sulawesi, Indonesia, within the Pacific Ring of Fire. Sangihe Island is renowned for its intensive volcanic activity and significant tectonic phenomena. The primary focus of this study is to understand the complex stratigraphy and the interaction between volcanic and tectonic processes that shape the unique geology of this region. Research methods include field observations, petrographic analysis, and data integration to reveal the history and variety of volcanic activities, as well as the diversity of rocks such as tuff, basalt, and andesite that form the island landscape through Plinian eruptions, lava flows, and pyroclastic deposits. Tectonically, Sangihe Island lies in the subduction zone between the Pacific and Eurasian Plates, creating seismic patterns and crustal deformations that are significant. The study also uncovers subsurface structures and fault systems that influence tectonic activities in the region, providing deep insights into the geodynamic processes at play. The implications of this research include geohazard risk mitigation and sustainable natural resource management. This study makes a significant contribution to understanding the geological complexity of the Pacific Ring of Fire, emphasizing the importance of interactions between volcanic and tectonic processes in shaping dynamic and hazardous geological landscapes.
GEOLOGI DAN STUDI FASIES GUNUNGAPI AWU, DAERAH BUNGALAWANG DAN SEKITARNYA, KECAMATAN TAHUNA, KABUPATEN KEPULAUAN SANGIHE, SULAWESI UTARA Djaya, J.H.M.; Rachmadhan, H.D.
Journal Geological Processes, Risks, and Integrated Spatial Modeling Vol 2 No 1 (2024): Journal Geological Processes, Risks, and Integrated Spatial Modeling
Publisher : LPPM Universitas PRISMA

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Abstract

The Sangihe Islands Regency, North Sulawesi Province, is situated between the Talaud Islands Regency and Biaro Islands Regency. This region hosts several active volcanoes, such as Mount Banua Wuhu and Mount Awu, the latter being the highest point in Tahuna District. This study focuses on the volcanic geology, specifically the facies of Mount Awu, conducted in the Bungalawang area of Tahuna District. The methodology involved field surveys encompassing direct observations of surface geological conditions, followed by laboratory analysis and studies. The identification of volcanic facies was based on geomorphology, volcanic rock stratigraphy, and geological structures. Research findings indicate that the study area falls within the distal facies of Mount Awu. The stratigraphy of the area comprises units such as Volcanic Rock Unit, Tuff Santiago Breccia Insert, Santiago Tuff Insert Breccia, Tuff Manente Breccia Insert, Manente Tuff Insert Breccia, and Alluvial Unit. Geomorphological identification, geological structure analysis, and stratigraphy reveal that the study area constitutes a distal facies located at the foothills of Mount Awu. Geological structure analysis indicates the presence of fractures showing a main stress direction towards N3240E. The geological history of the study area began with the formation of the Volcanic Rock Unit due to the eruption of the ancient Sahendarumang volcano. Subsequently, a series of eruption and deposition events formed distinct stratigraphic units. This research contributes significantly to understanding the geological and geological history of the region. Its findings are applicable in various practical applications, including disaster mitigation and natural resource development. This study also serves as a foundation for further research in the field of geology, particularly Volcanology.
POTENSI GEOWISATA BERBASIS KENAMPAKAN TANJUNG DAN FENOMENA SHEETING JOINT TANJUNG LELAPIDE PULAU SANGIHE SULAWESI UTARA Rachmadhan, H.D.; Adam, H.E.S.; Djaya, J.H.M.
Journal Geological Processes, Risks, and Integrated Spatial Modeling Vol 2 No 1 (2024): Journal Geological Processes, Risks, and Integrated Spatial Modeling
Publisher : LPPM Universitas PRISMA

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Abstract

Geotourism is increasingly popular in modern tourism because it allows tourists to understand and appreciate the unique geological features of a region. This study aims to explore the geotourism potential based on the cape landscape and sheeting joint phenomenon on Sangihe Island, North Sulawesi. Focusing on a case study of Cape Lelapide, the research involves field surveys, rock descriptions, joint structure analysis, geotourism analysis, and literature review. The research findings indicate that Sangihe Island has significant geotourism potential due to its stunning cape landscapes and sheeting joint phenomenon. The cape landscapes offer beautiful natural scenery, while the sheeting joint phenomenon provides evidence of tectonism based on previous studies. Tectonic features are indicated by the predominant N1200E orientation of joints from 100 measurements, interpreted as resulting from northwest-southeast directed stress, suggesting the subduction of the Philippine Plate beneath the Eurasian Plate (Molucca Sea Suture). Rock distribution at Cape Lelapide includes lava igneous rocks and occurrences of Calcite Vein and several vesicular structures indicating ancient volcanic activity of Sandarumang during the Quaternary-Tertiary period. Geotourism assessment highlights significant potential across various aspects, including scientific research, education, tourism, and risk degradation. With high value in scientific and educational aspects, coupled with promising tourism potential, this location is attractive for research and learning. However, attention is needed to address degradation risks, particularly due to its coastal location exposed to high wave erosion and inadequate legal protection.
GEOLOGI DAERAH ALASON DAN SEKITARNYA, KECAMATAN RATATOTOK, KABUPATEN MINAHASA TENGGARA, SULAWESI UTARA Najoan, A.D.; Masulili, F.
Journal Geological Processes, Risks, and Integrated Spatial Modeling Vol 2 No 1 (2024): Journal Geological Processes, Risks, and Integrated Spatial Modeling
Publisher : LPPM Universitas PRISMA

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Abstract

Administratively, the research area is located in Ratatotok District, Minahasa Tenggara Regency, North Sulawesi. Geographically, the research area is situated at UTM (Universal Transverse Mercator) coordinates 51N between 687000-691000 meters easting and 98000-102000 meters northing, covering an area of 4 x 4 square kilometers (16 km²). The objective of this research is to understand the geomorphology, stratigraphy, geological structure, and geological history of the study area. The geomorphology of the research area consists of four geomorphological units: Karst hill unit, Karst plain unit, Intrusive hill unit, and Alluvial plain unit. The stratigraphy of the study area comprises three rock units arranged from oldest to youngest: Crystalline Limestone unit, Porphyritic Andesite unit, and Alluvial Deposit unit. The geological structure in the study area includes fractures oriented generally northwest to southeast and a suspected uplift fault. The geological history of the study area began in the early Miocene epoch with the deposition of the Crystalline Limestone unit, followed by the emplacement of hypabyssal intrusions forming the Porphyritic Andesite unit during the early to middle Miocene epoch. In the Holocene epoch, alluvial units were deposited non-conformably, accompanied by erosion processes shaping the morphology of the study area, which continue to the present day.
ANALISIS TINGKAT KERAWANAN PERGERAKAN TANAH DI KELURAHAN TAAS KECAMATAN TIKALA KOTA MANADO, SULAWESI UTARA Kasenda, C.; Budiharso, A.S.
Journal Geological Processes, Risks, and Integrated Spatial Modeling Vol 2 No 1 (2024): Journal Geological Processes, Risks, and Integrated Spatial Modeling
Publisher : LPPM Universitas PRISMA

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Abstract

Disasters are events that can harm affected communities, caused by natural, non-natural, or human factors. Several dominant factors contributing to vulnerability to landslides or soil movements include rainfall intensity, slope steepness, soil type, as well as geological and geomorphological conditions. Taas District, as the study area, exhibits potential landslide hazards that require assessment. This research utilizes assessment methods and leverages Geographic Information System (GIS) tools. The study results, based on classification according to Minister of Public Works Regulation No. 22/PRT/M/2007, indicate low and moderate landslide vulnerability classes within the research area. These findings provide valuable insights for further mitigation efforts.
PEMETAAN TINGKAT KERENTANAN TANAH LONGSOR DI DESA PANGU SATU DAN SEKITARNYA KECAMATAN RATAHAN TIMUR KABUPATEN MINAHASA TENGGARA PROVINSI SULAWESI UTARA Alow, R.E.; Utomo, A.P.
Journal Geological Processes, Risks, and Integrated Spatial Modeling Vol 2 No 1 (2024): Journal Geological Processes, Risks, and Integrated Spatial Modeling
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Abstract

Southeast Minahasa Regency is a district that has land that has the potential for landslides because this area has high average rainfall, steep slopes (more than 40%), and is an earthquake-prone area. Areas prone to landslides and ground movements include areas around Suhuyon, Lowatag, Lomangi, Amburumalad, Maimbeng, Kaluya and Pangu. The research area is in Pangu Satu Village and its surroundings, East Ratahan District, Southeast Minahasa Regency, North Sulawesi Province. The method used in this research is the weighting and overlay scoring method. The results of this research are that the research area has 3 landslide susceptible zones, namely the zone with a low level of landslide vulnerability with an area of 0.01% of the area of the research area, the zone with a medium level of landslide vulnerability with an area of 98.1% of the area of the research area and the zone with a high level of landslide vulnerability with an area of 1.9% of the research area.
GEOLOGI DAERAH MINAWEROT DAN SEKITARNYA, KECAMATAN KAUDITAN, KABUPATEN MINAHASA UTARA, SULAWESI UTARA Luntungan, Paskah Richo; Budiharso, Agus Santoso; Rachmadhan, H.D.
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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Abstract

The research location is administratively in North Sulawesi Province, precisely in Kaima Village, Lembean Village, Kaasar Village and Treman Village, Kauditan District, North Minahasa Regency. It is located at the coordinates of 1°16'0"N to 1°17'45"N and 125°01'15"E to 125°03'15"E with an area of 16 km². Along with the improvement of technology and science about the earth along with the increase in the important role of geological maps, the existing updates to the geological map of Minawerot Region, Kauditan District, North Minahasa Regency, North Sulawesi Province with a larger scale of 1:10,000 meals will be able to produce more detailed geological maps to support exploration activities and development programs in the region. In this study, the researcher will identify the geological conditions that develop in the research area which include geomorphological aspects, stratigraphic aspects, geological structure aspects, and geological history aspects so as to produce geological maps, geomorphological maps and stratigraphic columns in the research area. The research method used is a field survey by directly observing the surface geological conditions in the research area which includes geomorphology, stratigraphy and geological structures. The geomorphology of the research area consists of 6 geomorphological units, namely Dissected Volcanic Hills, Volcanic Fluvial Plains, Volcanic Foothills, Eroded Hills, Volcanic Foothills and Lakes. The stratigraphy that developed in the research area consisted of the oldest to the youngest units, namely the Karegesan Andesite Igneous Rock Unit, the Kaima Tuff Breksi Unit, the Tuff Treman Breksi Repeating Unit, the Kaasar Lapili Tuff Unit and the Aluvial Unit. The structure in the research area is only obtained from primary geological structures. After pulling the straightness of the ridge and valley through the DEMNAS, the dominant direction was found, namely the Northwest and Southeast. The geological history that occurred in the research area began with the formation of the Karegesan Andesite Igneous Rock Unit, which was then continued with the deposition of the Tuff Kaima Breksi Unit and then the Tuff Kaima Breksi Repeating Unit. Then it was continued with the deposition of the Kaasar Lapili Tuff Unit and the last one was deposited the Aluvial Unit in the form of loose sediment
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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Abstract

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.
ANALISIS MIKROFASIES BATUGAMPING DAERAH BATU CERMIN FORMASI BEBULUH, KOTA SAMARINDA, PROVINSI KALIMANTAN TIMUR Mangalik, Dian; Syam, Muhammad Amin; Puteri, Resty Intan
Journal Geological Processes, Risks, and Integrated Spatial Modeling Vol 2 No 2 (2024): Journal Geological Processes, Risk and Integrated Spatial Modeling
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Abstract

The research area is located in Batu Cermin, Sempaja Utara sub-district, North Samarinda district, Samarinda City, East Kalimantan Province. Batu Cermin is one of the contributors of limestone as a building material for Samarinda and its surrounding areas. Currently, the existence of limestone in the form of outcrops is gradually diminishing due to extensive limestone mining, which necessitates research focused on limestone in this region so that information regarding all aspects of limestone can be documented through the research findings. The main objective of this study is to determine the facies with classifications according to Dunham (1962) and Embry & Klovan (1971), as well as to determine the depositional environment of limestone based on the Standard Microfacies (SMF) according to Flügel (1982), and then to relate it to the Facies Zones according to Wilson (1975).The methods used in this study are descriptive and analytical. The descriptive method is employed to make predictions and derive benefits from a problem that needs to be solved, while the analytical methods used include petrographic analysis, microfacies analysis, and stratigraphic analysis. Field and laboratory observations through descriptions reveal that the Batu Cermin area consists of facies units of mudstone, floatstone, wackestone, grainstone, and sandstone. Referring to the Standard Microfacies (SMF) according to Flügel (1982), it falls under SMF 8 and SMF 11. When linked to Facies Zones (FZ) according to Wilson (1975), the limestone in the research area is deposited in environments of FZ 7 (Open Marine) and FZ 6 (Platform Margin Sand Shoals).

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