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All Journal Tunas Geografi Paduraksa : Jurnal Teknik Sipil Universitas Warmadewa Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat UNM Geographic Journal SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal GEOSAPTA Jambura Geoscience Review Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Lamahu: Jurnal Pengabdian Masyarakat Terintegrasi Sustainability: Theory, Practice and Policy/STPP Geosfera: Jurnal Penelitian Geografi JAGE Panrita Inovasi: Jurnal Pengabdian Kepada Masyarakat Jurnal Riset dan Pengabdian Interdisipliner
Noviar Akase
Universitas Negeri Gorontalo
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Geologi Daerah Talumolo dan sekitarnya, Kecamatan Dumbo Raya, Provinsi Gorontalo Alief Ardiansyah; Sri Maryati; Noviar Akase
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Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jrpi.v3i2.39016

Abstract

This research is located in Talumolo Village and its surroundings in Dumbo Raya District, Gorontalo City, Gorontalo Province, which is located at coordinates 0°32'59" N to 0°34'15" N and 123°02'32" E to 123°04'01" E. This research aims to analyze the geological conditions of the Talumolo area and its surroundings. The methods used include surface geological mapping, lithological analysis, geological structures. The results of the study indicate that the research area is composed of volcanic and sedimentary rocks that have undergone weathering, and has geological structures such as joints and geomorphological conditions of the research area are dominated by denudational hill units and alluvial plain units, which are formed due to weathering and erosion processes over a long period of time.
Kajian Geologi Dan Statigrafi Daerah Botu dan Sekitarnya, Provinsi Gorontalo Fauzia Hambali; Sri Maryati; Noviar Akase
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Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jrpi.v3i2.39020

Abstract

The research is located in Gorontalo Province, precisely in Dumbo Raya District with coordinates 0°32’24” N and 123°4’32” E. Geologically, the research area is located on the North Arm of Sulawesi Island and belongs to the Southern Mountain Zone. The geological conditions of this region are influenced by complex tectonic activities and intensive geomorphological processes that form diverse landscapes. This research aims to determine the geological conditions including geomorphology, stratigraphy, and geological structures. The method used is field geological mapping supported by secondary data, through observations of rock outcrops, lithological descriptions, and measurements of geological structures. The results show that the geomorphology of the area is dominated by denudational hill units and alluvial plains. The hill units are composed of igneous rocks such as granodiorite and andesite that have experienced weathering and erosion, forming steep slopes. The alluvial plain units are composed of younger loose material. Stratigraphically, the research area consists of granodiorite, andesite, and limestone unit.
Morfologi Dan Stratigrafi Desa Libungo dan Sekitarnya, Kecamatan Suwawa Selatan, Kabupaten Bone Bolango Dhea Amelia A. Banteng; Sri Maryati; Noviar Akase
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Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jrpi.v3i2.38885

Abstract

The research area is located in South Suwawa District, Bone Bolango Regency, Gorontalo Province, which is part of the North Arm of Sulawesi characterized by complex tectonic conditions. This study aims to analyze the geomorphology and stratigraphy of the research area through geological mapping and lithological interpretation. The methods used include field surveys, rock sampling, petrology analysis and spatial data analysis. The results indicate that the research area consists of two geomorphological units, namely volcanic hills and floodplain units. Stratigraphically, the area is composed of four lithological units arranged from oldest to youngest: tuff, basalt, andesite, and alluvial deposits. The distribution of these units is strongly influenced by geomorphological conditions and fluvial processes.
Geologi dan Petrografi Batuan Beku Desa Biluhu Barat, Gorontalo Mohamad Nazer Ismail; Muh Kasim; Noviar Akase
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Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jrpi.v3i3.39810

Abstract

Sulawesi Island has high geological complexity due to the collision of three major plates, yet detailed petrographic studies in Gorontalo Province, particularly in West Biluhu Village, remain limited. This study aims to map the geological conditions (geomorphology, stratigraphy, structure) at a scale of 1:5,000 and to identify igneous rock types using petrographic methods. The methods include field surveys, slope and joint measurements, and thin section analysis under a polarized microscope. The results show that the geomorphology consists of Volcanic Hill Unit and Denudational Volcanic Hill Unit. The stratigraphy from oldest to youngest is Andesite Unit and Dacite Unit, correlated with the Tinombo Formation (Eocene–Oligocene). The geological structure is characterized by tension joints with northeast–southwest and north–south orientations. Petrography reveals hydrothermally altered andesite (quartz-filled microfractures, embayed crystal) and dacite with interstitial quartz. This study is important as an integrated geological baseline data and an initial indication of mineralization potential in the area.
Studi Geologi Daerah Makale Dan Sekitarnya, Kabupaten Tana Toraja, Provinsi Sulawesi Selatan Putri Wulan Rahmawati; Fitryane Lihawa; Noviar Akase
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Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jrpi.v3i3.39594

Abstract

The Makale area, Tana Toraja, South Sulawesi (119°19′05″–120°09′16″ E; 02°36′03″–03°24′13″ S) features a complex geological setting with limited detailed data. This study maps its geology through 54 observation stations, thin-section petrography, geomorphological classification, and Landsat 8 band 5-6-7 lineament interpretation. Stratigraphically, the area comprises four units from oldest to youngest: Early–Middle Miocene Makale Formation limestones, classified as Foraminiferal Rudstone (±28%, grain-supported, 1% porosity) and Foraminiferal Packstone (±29%, mud-supported, 2% porosity) per Embry and Klovan (1971); the Middle Miocene–Pliocene Sekala Formation sandstone (±20%); and the youngest alluvial deposits (±24%). Geomorphologically, the terrain is divided into karst hills with tower karst morphology (±57%), denudational hills (±20%), and fluvial valleys (±24%). Lineament analysis reveals a dominant north–south structural trend, validated by field lithological contacts.
Analisis Tingkat Kerawanan Gerakan Tanah Desa Tontayuo, Kecamatan Batudaa Pantai, Kabupaten Gorontalo Ana Saputri R Yahya; Ahmad Zainuri; Noviar Akase
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Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jrpi.v3i3.39353

Abstract

Tontayuo Village, Batudaa Pantai District, Gorontalo Regency is an area with hilly topography and morphological characteristics with variations in slope gradients as well as lithology and rainfall conditions that have the potential to trigger landslides. This study aims to analyze the lithology of study area and the level of landslide vulnerability in the area. The research methods include field geogogical mapping, secondary data processing, and spatial analysis based on Geographic Information System (GIS). Assessment of landslide vulnerability levels is based on slope gradient parameters, lithology types, rainfall, lineament density, and land cover. The results of the study show that the lithology that makes up the study area includes basalt, granodiorite, limestone, and alluvial units. Based ono the analysis results, the level of landslide vulnerability in the study area can be categorized into 3 (three) classes, namely, low landslide vulnerability class (29,93 ha), medium landslide vulnerability class (178,3 ha), and high landslide vulnerability class (197,38 ha).
Kontrol Struktur Geologi Terhadap Pola Mineralisasi Di Desa Hulawa, Pohuwato, Provinsi Gorontalo Diwa Ahmad Luly; Aang Panji Permana; Noviar Akase; Muhammad Kasim; Ronal Hutagalung; Agustinus Sosang
Journal of Applied Geoscience and Engineering Vol 5, No 1 : Juni 2026
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jage.v5i1.38955

Abstract

This study was conducted in Hulawa Village, Buntulia District, Pohuwato Regency, Gorontalo Province, located within the North Arm of Sulawesi, an area known for its epithermal mineralization potential. The research aims to analyze the relationship between geological structures and mineralization patterns. The methodology involved geological surface mapping, structural measurements, lineament analysis, and stereographic interpretation using Dips 7.0 and WinTensor software. Geomorphologically, the study area consists of fault-controlled mountainous and hilly terrains. The identified lithologies include Lapilli Tuff, Porphyritic Rhyodacite, Rhyodacite Breccia, Dacite, Biotite Dacite, and Diorite. Structural analysis indicates that the area was affected by a principal compressional stress (σ1) trending Northwest–Southeast (NW–SE), which generated conjugate fracture systems oriented NW–SE and Northeast–Southwest (NE–SW). These structures acted as conduits for hydrothermal fluid migration. Two dominant vein orientations were identified: NE–SW trending oxidized quartz veins in the northeastern area and NW–SE trending sulfide-rich stockwork veins containing pyrite and chalcopyrite in the southwestern area. Geochemical analysis shows that Cu, As, and Mo anomalies are spatially associated with structural zones, indicating strong structural control on hydrothermal fluid circulation and mineral deposition. Overall, mineralization in the Hulawa area is interpreted to be controlled by conjugate fracture systems and strike-slip fault structures
Geologi dan Karakteristik Batubara Daerah Kampung Klasari, Distrik Moisegen, Kab. Sorong, Provinsi Papua Barat Daya Dana Christina Naomi Mambrasar; Fitryane Lihawa; Noviar Akase
Journal of Applied Geoscience and Engineering Vol 5, No 1 : Juni 2026
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jage.v5i1.38922

Abstract

The purpose of the study is to examine the coal quality features and geological conditions in Klasari Village, Moisegen District, Sorong Regency, South-west Papua Province. Coal in the study area occurs as intercalations within claystone units and exhibits physical characteristics indicating a low degree of coalification. Laboratory testing was conducted using proximate analysis to determine coal quality parameters, including moisture content, ash content, volatile matter, and fixed carbon. The results show moisture values ranging from 6.21 to 13.95%, ash content from 2.1 to 14.4%, volatile matter from 33.7 to 38.3%, fixed carbon from 6 to 6.9%, and calorific values between 3,379 and 3,710 kcal/kg. Based on the ASTM D388 classification, the coal from the study area is classified as lignite. These findings indicate that the coal was formed in a swamp–fluvial depositional environment under reductive conditions that were not favorable for further coalification processes. Therefore, the coal is considered low-rank and is more suitable for small-scale energy utilization or low-power industrial applications.
Pemetaan Geologi Desa Kopi, Kecamatan Bulango Utara, Kabupaten Bone Bolango, Gorontalo Mirdayanti Dachi; Noviar Akase; Sri Maryati
Geosfera: Jurnal Penelitian Geografi Vol 5, No 1 (2026): Geosfera : Jurnal Penelitian Geografi
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/geojpg.v5i1.39447

Abstract

Detailed geological information regarding the geomorphology, lithology, and geological structures of Kopi Village, North Bulango District, Bone Bolango Regency, remains limited, despite its importance for geological research, natural resource management, and regional development planning. This study aims to characterize the geomorphological, lithological, and structural features of the area through detailed geological mapping at a scale of 1:10,000. The research employed literature review, field geological surveys, geomorphological observations, outcrop investigations, structural measurements, rock sampling, and megascopic and petrographic analyses. The results reveal four lithological units, namely the Andesite Unit, Diorite Unit, Granodiorite Unit, and Alluvial Unit. Geomorphological analysis identified three landform units consisting of Volcanic Hills, Intrusive Hills, and Alluvial Plains. The geological structures are dominated by tension joints with principal orientations of northwest–southeast (NW–SE) and northeast–southwest (NE–SW). Stratigraphic relationships and petrographic characteristics indicate that andesite represents the oldest unit, subsequently intruded by diorite and granodiorite during the Middle Miocene, whereas alluvial deposits constitute the youngest unit formed by surface sedimentation processes. The geological evolution of the study area is interpreted to have been controlled by magmatic and tectonic activities that influenced the development of lithology, geomorphology, and geological structures. The findings provide detailed geological baseline information that can support future geological investigations and geology-based regional management.
Analisis Kerawanan Longsor dengan Metode Analytical Hierarchy Process (AHP) di Desa Kopi, Kecamatan Bulango Utara, Kabupaten Bone Bolango, Gorontalo Mirdayanti Dachi; Sri Maryati; Noviar Akase
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 3 (2026): August
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i3.2466

Abstract

Landslides are common natural disasters in Indonesia, particularly in areas with steep topography and high rainfall. Kopi Village, Bulango Utara District, Bone Bolango Regency, Indonesia, has experienced several landslide events and remains susceptible to future occurrences. This study aims to analyze landslide susceptibility in Kopi Village using the Analytical Hierarchy Process (AHP) integrated with Geographic Information Systems (GIS). The parameters used include slope, rainfall, land use, lithology, and distance from lineaments. The AHP results indicate that slope is the most influential parameter (35%), followed by rainfall (30%), land use (14%), lithology (13%), and distance from lineaments (8%), with a Consistency Ratio (CR) of 0.084. Landslide susceptibility mapping shows that the study area is dominated by the high susceptibility class, covering 3.10 km² (54.34%), followed by the moderate class at 2.05 km² (35.95%) and the low class at 0.55 km² (9.71%). These findings can serve as a basis for landslide mitigation and disaster risk reduction in Kopi Village.
Co-Authors Abd Kadir Mubarak A Amin Abduh, Alan Gani Agustinus Sosang Ahmad Firli Aprilio Mamonto Ahmad Iryanto Rompo Ahmad Zainuri Ahmad Zainuri Alief Ardiansyah Ana Saputri R Yahya Antoni, Isan Arifin, Yayu Aril A.H Sahidah Aris, Ayub Pratama Cindi Claudia Male Dachi, Mirdayanti Dai, Elan Dana Christina Naomi Mambrasar Daud Yusuf Deden, Mokoagow Deden Dhea Amelia A. Banteng Diwa Ahmad Luly Djamal Adi Nugroho Uno Ente, Amargio Saputro Fandji Marfian Fauzia Hambali Fitryane Lihawa Hamid, Rinto Saputra Hermawan, Riki Hidayansya, Taufik Hutagalung, Ronal Intan Noviantari Manyoe Irene Ester Wowiling Irmawati Irmawati Irwan Muis K Badaun, Nur Azizah Kasim, Muhammad Kayambo, Muhammad Ridho Lahay, Muamart M. Iqbal Liayong Pratama Mamonto, Ahmad Firly Mamonto, Fajri Kurniawan Maryati, Sri Mirdayanti Dachi Mirdayanti Dachi Moehammad Jasim Agi Saputra Moh. Nazer Ismail Moh. Syach L. Lasahido Mohamad Nazer Ismail Mokodompit, I Gede Wahyu Muh Kasim Muhammad Iqbal Asiki Muhammad Kasim Muis, Irwan Mutiara Nonsi Nonsi, Mutiara Nurahman, Ikwan Nurmuhniyanti M. Hubaib Pade, Dwi Ziana Jamila Pakaya, Siti Aqdawiya Panai, Irdiansyah Paputungan, Ulfanna Permana, Aang Panji Ponto, Nadia Fransisca Puhi, Rian Puhi, Riyan Putra, Moh. Bahrul Zaman Momidu Putri Aprilia Matoka Putri Wulan Rahmawati Rachman, Arianzah Rizki Rahman, Adisty S. Rauf, Jayanti Rivai, Alya Sri Andini Rizky Hizrah Wumu Robot, Ladya Cheryl Ronal Hutagalung Rusdi, Infithar Hi Sino, Widya Indriani H. Siti Fatimah Sri Maryati Suma, Muhamad Danial Sumarjis, Suly Ayu Sune, Nawir Supriadi Supriadi Syahrizal Koem Tangkudung, Latifa Umar Zulkarnain Bakkar Yani, Lisra Yasin Septian Yayu Indriati Arifin