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ANALISIS KETEBALAN ENDAPAN LATERIT DAN PENGARUHNYA TERHADAP KADAR NIKEL DI DAERAH KONINIS, KABUPATEN BANGGAI Nonsi, Mutiara; Arifin, Yayu Indriati; Akase, Noviar
UNM Geographic Journal Volume 7 Nomor 2 September2024
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/ugj.v7i2.66090

Abstract

The Koninis region has diverse morphological features accompanied by the formation of nickel laterite deposits, leading to variations in the thickness of these deposits. The research location is administratively part of Banggai Regency, at coordinates 05°0'10" S and 122°15'40" E, within the concession area of PT. Koninis Fajar Mineral, covering approximately 138 hectares. This study aims to understand the morphological conditions and analyze the correlation between the thickness of nickel laterite deposits and the existing morphological conditions in the research area using methods such as geological mapping, petrographic analysis to determine the lithology of the research area, X-Ray Fluorescence (XRF) geochemical analysis to identify the nickel laterite ore zones, and studio analysis. The results indicate a range of laterite thicknesses, from a minimum of 6.5 meters to a maximum of 34 meters, with varying thicknesses within each zone. Analysis shows that thicker saprolite corresponds to higher nickel content, while thicker limonite correlates with lower nickel content.
GEOLOGI DAN ANALISIS JENIS BATUAN ASAL PADA PEMBENTUKAN ENDAPAN NIKEL LATERIT DI KECAMATAN BUNTA, KABUPATEN BANGGAI Yuriadi, Bilal Aditya; Arifin, Yayu Indriati; Hutagalung, Ronal
UNM Geographic Journal Volume 7 Nomor 2 September2024
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/ugj.v7i2.66100

Abstract

This research is motivated by the presence of nickel laterite deposit potential originating from various types of lithology in the Bunta sub-district, Banggai Regency, which needs to be followed up to facilitate exploration of nickel laterite. The research area is located at coordinates 122°15'8" - 122°15'18" South Latitude and 0°50'36" - 0°51'18" East Longitude, covering an area of approximately ±441 hectares. The purpose of this study is to understand the geology of the research area and the types of source rocks that have formed nickel laterite deposits in the area. The data used in this research includes geomorphological data, structural data, lithological data, and rock samples. The collected data will produce information on rock types and interpretations of the geological history of the research area. Based on the analysis, the geomorphology of the research area consists of three units: structural hills, denudational hills, and interhill plains. The rock types in the research area include lherzolitic serpentinized rocks and serpentinites, which are part of the ultramafic complex. The observed and developed structure in this area is tensile fractures with a dominant direction of Northwest - Southeast. The results show that this area could be exposed due to oceanic crust subduction, which has uplifted ultramafic rocks to the surface, leading to physical and chemical weathering and the formation of nickel laterite deposits.
STUDI GEOLOGI DAERAH TIHENGO DAN SEKITARNYA KECAMATAN PONELO KEPULAUAN KABUPATEN GORONTALO UTARA Hidayansya, Taufik; Arifin, Yayu Indriati; Akase, Noviar
UNM Geographic Journal Volume 7 Nomor 1 Maret 2024
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/ugj.v7i1.65593

Abstract

The research titled Geology of the Tihengo Area and Surroundings, Ponelo Kepulauan District, North Gorontalo Regency was conducted with the aim of understanding the geomorphological, stratigraphic, and geological structural conditions of the area using geological survey or mapping methods. Based on the research findings, the Tihengo area and its surroundings are located at an elevation of 0-125 meters above sea level, featuring varied morphology ranging from lowlands to steep hills. The region is predominantly comprised of residential, agricultural, and plantation lands, with vegetation generally classified as sparse to moderate. The relief in this area includes plains to steep hills with "V"-shaped valleys, formed due to the influence of both endogenous and exogenous geomorphological processes, including tectonic activity, magmatism, as well as ongoing erosion and sedimentation. Slope analysis shows a range of slopes from flat to very steep, with varying percentages of land area. The geomorphology of this area is divided into three main units: volcanic hill unit, denudational hill unit, and coastal plain unit. The stratigraphy of the research area consists of a sequence of andesite rocks, conglomerates, sandstones (coarse, medium, and fine), as well as coastal alluvial deposits. The geological structure is identified based on lineaments observed on DEMNAS imagery, with a general northeast-southwest orientation
STUDI GEOMORFOLOGI DAERAH TENILO DAN SEKITARNYA, KECAMATAN TILAMUTA, KABUPATEN BOALEMO, PROVINSI GORONTALO Yenayo, Hafipa; Arifin, Yayu Indriati; Hutagalung, Ronal
UNM Geographic Journal Volume 7 Nomor 2 September2024
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/ugj.v7i2.66275

Abstract

The research area is located in the village of Tenilo and its surroundings, which exhibit interesting land characteristics and features, making it an attractive site for study. This research aims to analyze and map the geomorphological conditions in order to obtain information related to various geomorphological aspects. The method used is the analysis of geomorphological aspects. The results of this study indicate that the geomorphological units in the area include volcanic hills, denudational hills, and marine plains. The geomorphological aspects of this area are categorized as follows: morphography, consisting of hill and plain units; morphometry, with elevation points ranging from 0 to 350 meters above sea level, and slope gradients from flat to steep; morphogenesis, which includes active morphostructures such as faults and joints, and passive morphostructures such as andesite, volcanic breccia, and alluvial deposits; morphodynamics, characterized by river flow patterns including dendritic and sub-parallel patterns, with river stages ranging from mature to youthful. According to the regional geological map of the Tilamuta sheet, the morphochronology of the research area dates back to the Eocene to Holocene epochs, and the morpho-arrangement of the area is dominated by high erosion processes.
OPTIMALISASI PEMBERDAYAAN MASYARAKAT DALAM PENGELOLAAN RISIKO TAMBANG EMAS: SOLUSI RETORT UNTUK MENGURANGI PAPARAN MERKURI DI DESA TOTOPO Arifin, Yayu Indriati; Ninasafitri; Pateda, Sri Manovita; Mamonto, Sri Maghfira; Tudjaena, Asti Ananda; Gunawan, Aryl Afrizhar; Mamonto, Ahmad Firli; Simbala, Susilo Bintang
MONSU'ANI TANO Jurnal Pengabdian Masyarakat Vol. 7 No. 2 (2024)
Publisher : Universitas Muhammadiyah Luwuk

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32529/tano.v7i2.3558

Abstract

Kegiatan pertambangan emas skala kecil di Desa Totopo, Kecamatan Bilato, Kabupaten Gorontalo, telah menyebabkan pencemaran merkuri yang signifikan terhadap lingkungan dan kesehatan masyarakat. Pengabdian ini bertujuan untuk meningkatkan kesadaran masyarakat tentang bahaya merkuri dan memperkenalkan teknologi retort sebagai solusi pengolahan emas yang lebih aman dan ramah lingkungan. Metode yang digunakan mencakup sosialisasi pengolahan tambang ramah lingkungan, pelatihan penggunaan teknologi retort, sosialisasi makanan sehat bagi penambang, serta konservasi lahan melalui penanaman bibit di sekitar tambang. Hasilnya menunjukkan peningkatan pemahaman masyarakat terkait bahaya merkuri, adopsi teknologi retort yang berhasil mengurangi emisi merkuri hingga 70%, serta keberhasilan konservasi lahan dalam mengurangi erosi dan memperbaiki kualitas tanah. Keterlibatan aktif masyarakat menjadi kunci keberhasilan program ini dalam mengurangi dampak lingkungan dan meningkatkan kesehatan masyarakat.
TINDAKAN PREVENTIF STUNTING MELALUI PEMBERDAYAAN MASYARAKAT KELURAHAN PILOLODAA Arifin, Yayu Indriati; Sahami, Femy Mahmud; Panigoro, Hasan S.; Rauf, Jayanti
MONSU'ANI TANO Jurnal Pengabdian Masyarakat Vol. 8 No. 1 (2025)
Publisher : Universitas Muhammadiyah Luwuk

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32529/tano.v8i1.3556

Abstract

Angka stunting di kelurahan Pilolodaa kota Gorontalo termasuk tinggi, hal ini disebabkan oleh beberapa hal seperti kurangnya pengetahuan gizi seimbang dan terbatasnya kapasitas kader posyandu dan kurangnya angka partisipasi mayarakat. Oleh karena itu melalui program pengabdian masyarakat ini dilaksanakan di Kelurahan Pilolodaa, Gorontalo, dengan tujuan utama mengurangi angka stunting melalui pendekatan pemberdayaan masyarakat. Program ini melibatkan berbagai kegiatan, termasuk pelatihan kader posyandu, sosialisasi tentang stunting dan gizi, serta pemberian makanan tambahan (PMT) bagi anak-anak yang berisiko stunting. Hasil kegiatan menunjukkan adanya peningkatan pengetahuan masyarakat mengenai stunting dan gizi, serta perubahan perilaku dalam hal pola makan keluarga. Selain itu, program ini juga berhasil meningkatkan kapasitas kader posyandu dalam memantau kesehatan anak secara mandiri. Program ini menegaskan pentingnya partisipasi aktif masyarakat dan kolaborasi antara masyarakat, tenaga kesehatan, serta pemerintah dalam upaya pencegahan stunting secara berkelanjutan.
Geomorfologi Daerah Tambang Emas Rakyat Juriya dan Sekitarnya, Kecamatan Bilato, Kabupaten Gorontalo Rauf, Jayanti; Arifin, Yayu Indriati; Akase, Noviar
Journal of Applied Geoscience and Engineering Vol 3, No 2 : Desember 2024
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jage.v3i2.30322

Abstract

This study examines the geomorphological characteristics of the Juriya people's gold mining area, Gorontalo Regency, which includes topographic variations, slopes, river flow patterns, river stadia, and geomorphological units. The research area is divided into four main morphometry types: Lowland, Inland Lowland, Low Hill, and Hill. Slope analysis identifies zones ranging from flat to very steep, indicating different levels of slope stability and areas with a high risk of erosion. The results of the river flow pattern analysis showed the dominance of parallel and dendritic patterns, with a "V" shaped valley in the young stadia and a "U" in the adult stadia. The geomorphological units in the study area consist of the Volcanic Hills Unit, the Denudional Hills Unit, and the Aluvial Plains Unit, each of which has unique lithological and topographic characteristics and affects land use and environmental stability. This study shows that mining activities can increase the risk of erosion and land degradation in areas that are not protected by vegetation, especially on steep slopes. This research contributes by providing geomorphological data that can be used as a reference for sustainable environmental planning and management in the mining area. These results can strengthen efforts to mitigate environmental risks and support responsible land use in people's mining areas.
Geomorfologi Daerah Lombongo Dan Sekitarnya, Kecamatan Suwawa Tengah, Kabupaten Bone Bolango Ruhimat, Nursultan Akbar; Arifin, Yayu Indriati; Kasim, Muh
Journal of Applied Geoscience and Engineering Vol 3, No 2 : Desember 2024
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jage.v3i2.30321

Abstract

The research area is located in Lombongo village and its surroundings which have interesting characteristics and landforms for research. This study aims to analyze and map geomorphological conditions to obtain information related to geomorphological aspects. The method used is geomorphological aspect analysis. The results of this study indicate that the geomorphological units of this area are intrusive mountains and alluvial plains. The geomorphological aspects of this area are divided into morphography consisting of mountain and lowland units, morphometry consisting of elevation points ranging from 0 - 750 masl, with a very steep slope, the morphogenesis of the research area is divided into active morphostructures, namely fractures and passive morphostructures, namely porphyry diorite, granodiorite and alluvial deposits, morphodynamics of the research area, namely river flow patterns consisting of dendritic and parallel flow patterns with mature to young river stages, based on the regional geological map, the morphochronology tilamuta sheet of the research area was formed in the Eocene - Holocene era, the morphoarrangement of the research area is in the form of a high erosion process.
Geomorphological Analysis of the Right Bank Area of Bulango Ulu Dam, Gorontalo Province Using Geological and DEM-Based Terrain Evaluation Suma, Muhamad Danial; Arifin, Yayu Indriati; Akase, Noviar
Jambura Geoscience Review Vol 7, No 2 (2025): Jambura Geoscience Review (JGEOSREV)
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jgeosrev.v7i2.28127

Abstract

This study investigates the geomorphological characteristics of the right bank area of the Bulango Ulu Dam in Gorontalo Province to support infrastructure planning, risk assessment, and sustainable land use. Employing integrated methods involving field observations and Digital Elevation Model (DEM) analysis, the research identifies two principal geomorphological units: Structural Low Hills (S1) and Fluvial Plains (F1). These units are shaped by the combined influence of endogenic processes, such as tectonic uplift and structural deformation, and exogenic processes, including fluvial erosion, sedimentation, and weathering. Lithological analysis revealed the presence of three main rock units diorite, granodiorite, and alluvial deposits each contributing to the area's terrain diversity and physical stability. Morphometric classification indicates that steep (30–70%) and very steep (70–140%) slopes dominate more than half of the study area, highlighting a high susceptibility to landslides and erosion hazards, particularly during peak rainfall seasons. The identification of a sub-dendritic drainage pattern suggests that geological structures play a vital role in directing surface runoff and sediment transport. The novelty of this research lies in its localized and detailed geomorphological assessment, which had not been previously conducted on the dam’s right bank. The findings have practical implications for dam safety, slope reinforcement strategies, and regional spatial planning under dynamic geological conditions.
Analisis Tipe Longsoran Daerah Pohe Kota Gorontalo Berdasarkan Orientasi Struktur Geologi Usman, Fatma T.; Arifin, Yayu Indriati; Hutagalung, Ronal; Permana, Aang Panji
Journal of Applied Geoscience and Engineering Vol 1, No 1 : Juni 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1025.447 KB) | DOI: 10.34312/jage.v1i1.15517

Abstract

Administratively, the research area is located in Pohe Village, Hulonthalangi sub-district, Gorontalo City, Gorontalo Province. Astronomically, the research area is at coordinates 00030'16.10"- 00030'41.58" north latitude and 12302'36.10"- 12303'19.55" east longitude. The purpose of this study was to analyze the type of landslide based on the orientation of the geological structure of the Pohe area and the type of landslide based on the orientation of the geological structure of the Pohe area. The method used in this research is retrieval of field data, namely lithological data, geological structure data and slope data of the research area, then structural data processing using dips 6.0 software application and analyzed using stereographic projections. Based on the results of identification and stereographic analysis, it shows that in the research area there are 2 types of landslides, namely plane failure and toppling failure. The type of plane failure is found at stations 1.1, 1.2, 1.3, 1.4, and 1.6. While the type of landslide toppling failure is found at stations 1.5, 1.7, and 1.8.