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Ronal Hutagalung
Program Studi Teknik Geologi, Universitas Negeri Gorontalo, Gorontalo
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Engineering Environmental Science

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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
Potensi Geodiversity pada Geosite Air Terjun Taludaa, Bone Bolango, Gorontalo Mohamad Ilham D. Djou; Yayu Indriati Arifin; Ronal Hutagalung
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.v5i1.38923

Abstract

This study was conducted in Taludaa Village with the objective of analyzing geological conditions, including geomorphology, lithology, and geological structures, as well as assessing the geodiversity potential of the waterfall geosites using Brilha’s (2015) classification. The methodology involved surface geological surveys, laboratory analysis, and studio processing. Results show that the geomorphology of the study area comprises two units: structural hills and an alluvial plain. The stratigraphy consists of andesite, granodiorite, and alluvial deposits. Geological structures identified include tension joints caused by compression stress and an oblique fault trending southeast–northwest. At Station ID43, a normal right-slip fault with a dip angle of less than 45° was observed. The geological history indicates tectonic activity from the Early to Middle Miocene, forming andesitic volcanic rocks of the Bilungala Formation, followed by Middle to Late Miocene granodiorite intrusion, and Holocene alluvial deposition continuing to the present. The geodiversity inventory identified two waterfall sites (Geosite 1 and Geosite 2). Both geosites demonstrate high scientific and educational value, moderate tourism value with a total score of 245, and very low vulnerability with a total score of 100. These findings highlight the significant scientific and educational potential of the Taludaa waterfalls, supporting their role in geoconservation and sustainable geotourism development in Gorontalo.
Co-Authors Aang Panji Permana Agustinus Sosang Diwa Ahmad Luly Mohamad Ilham D. Djou Muhammad Kasim Noviar Akase Yayu Indriati Arifin