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Alam Budiman Thamsi
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Journal of Geology and Exploration
Published by CV. Insight Publisher
ISSN : -     EISSN : 29633869     DOI : https://doi.org/10.58227/jge
Core Subject : Science, Engineering,
Earth & Planetary Sciences Engineering
Journal of Geology and Exploration opens a new era for the publication of geoscientific research articles in English, covering geology, geophysics, geochemistry, paleontology, structural geology, mineralogy, petrology, stratigraphy, sedimentology, environmental geology, economic geology, petroleum geology, hydrogeology, remote sensing and mining exploration.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Teknik Geologi dan Geologi Teknik
Articles 40 Documents
 1   2   3   4 
Maindam Stability Analysis of Retarding Basin TR-01 Flood Control Project Das Sanggai 1A Advanced KIPP IKN Region East Kalimantan Husain, Sayid Agil; Azikin, Busthan
Journal of Geology and Exploration Vol. 4 No. 1 (2025): Journal of Geology and Exploration, June 2025
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i1.191

Abstract

Infrastructure development on KIPP-IKN East Kalimantan area faces challenges such as flooding and unavailability of raw water. To address these issues, a Retarding basin is being built to address these issues. However, the engineering geological conditions on the basin and surrounding area can vary significantly, impacting the construction process. Further research is needed to understand these conditions and safety factors for slope stability and seepage in the main dam building. The research method used is the surface and subsurface geological mapping method to analyze engineering geological conditions as well as simulating the stability of the main dam using data from laboratory analysis. The research area consists of residual soil classified as Class D and mudstone as Class Middle, with fair-poor quality rocks. Slope stability simulations show that the area meets minimum requirements and is safe from landslides. Additionally, seepage stability simulations show that the TR-01 retarding basin's seepage discharge is below maximum permitted discharge requirements and is included in the safe category.
Geology and Geochemistry of Batuan Gunungapi Walimbong Formation Balepe Area Tana Toraja Regency South Sulawesi Province Idham, Virly Fakhriyah Uzdah; Azikin, Busthan; Tonggiroh, Adi
Journal of Geology and Exploration Vol. 4 No. 1 (2025): Journal of Geology and Exploration, June 2025
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i1.195

Abstract

The study area is located in the Regional Geological Sheet of Majene and Western Palopo, precisely administratively, the research location is located in the Balepe Area, Malimbong Balepe District, Tana Toraja Regency, South Sulawesi Province and astronomically located at the coordinates 119°39'20' 'E - 119°43'20'' E (East Longitude) and 03°03'25'' S - 03°06'25'' S (South Latitude). The purpose of the study was to find out the type and affinity of magma, the naming of rocks based on chemical composition, and the evolution of magma in the study area. The methods used are field observations and data collection, petrographic analysis, and geochemistry using XRF (X-Ray Fluorescence spectrometry). The data was processed using GCDKIT Software. Based on the results of geochemical analysis on the four rock samples, the rock types were based on Total Alkaline Silica (TAS), namely trachy basalt, basalt, rhyolite, and dacite with magma affinity, namely Shoshonite Series and High-K calc-alkaline Series. Petrographic analysis in the form of naming rocks using the Pettijohn (1975) classification, namely lithic tuff, crystal vitric tuff, vitric crystal tuff, and vitric crystal tuff. The evolution of magma in the study area in the diagram of the variation of the content of major elements against SiO2 compounds shows that some of the main elements are systematically differentiated and some are not systematic.
Characteristics of Limestone Formation Tonasa in Baring Area Segeri District Pangkep Regency South Sulawesi Province Adam, Muhammad; Hasanuddin; Yunita Samalembang
Journal of Geology and Exploration Vol. 4 No. 1 (2025): Journal of Geology and Exploration, June 2025
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i1.222

Abstract

Administratively, the Baring area is included in the area of Segeri District, Pangkep Regency, South Sulawesi Province. This study aims to determine the characteristics of the Tonasa Formation limestone. The research method is the method of observation and collection of field data and the petrographic method.The Baring area geomorphological unit is a geomorphological unit of low karst hills characterized by the presence of karst cliffs, staclactites and karst caves. Periodic and episodic river types, subsequential river genetic types, river stadia are young towards adulthood and adult area stadia towards adulthood. Characteristics of the appearance of limestone of the Tonasa Formation macroscopically in a fresh state of brownish-yellow and in a weathered state of blackish-gray, clastic texture, size of fine sand material to medium sand, unlayered structure, good sortation, closed packaging, good porosity, good permeability. And microscopically, it shows a massive structure and texture of low porosity, grain supported, 0.02 – 0.75 mm, the constituent fragments in this rock are in the form of skeletal grains/clast/fossils, minerals in the form of calcite are found with a size of 0.02 mm – 0.15 mm, mud is found replacing and filling body parts of fossils that have undergone dissolution with a size of <0.02 mm.
Geology and Geochemical Characteristics of Residual Soil From Tuff as Raw Material for Industry in Paccarammengan Area, Ujung Loe District, Bulukumba Regency, South Sulawesi Province Fazry Parimajeng; Azikin, Busthan
Journal of Geology and Exploration Vol. 4 No. 1 (2025): Journal of Geology and Exploration, June 2025
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i1.227

Abstract

The research area is administratively included in the Paccarammangan Area, Ujung Loe District, Bulukumba Regency, South Sulawesi Province. The purpose of this study was to conduct a study of the geochemical characteristics of rocks and residual soil from tuff in order to obtain geology regarding the characteristics of rocks and residual soil information from tuff and its use as industrial raw materials. This study was conducted using geological surface mapping methods and laboratory analysis in the form of petrographic analysis and X-Ray Fluorescence (XRF) on 4 rock samples at stations 8, 15, 16, and 48. From the results of petrographic analysis, tuff in the Walanae Formation mostly comes from intermediate-ultrabasic magma series based on its mineral composition. From the results of geochemical analysis, tuff in the Walanae Formation has a positive and negative correlation to SiO2 and the nature of its magma is intermediate-ultrabasic. Based on the naming of rocks, station 8 has a trachy basalt composition, stations 15, 16 have a basaltic andesite composition, and station 48 has a basanite composition. The use of the remaining tuff soil in the research area is suitable for use as bricks, roof tiles and fine pottery.
Coal Characterization of Mallawa Formation in Mallawa Area, Maros Regency, South Sulawesi Province Anshariah; Anwar, Habibie
Journal of Geology and Exploration Vol. 4 No. 1 (2025): Journal of Geology and Exploration, June 2025
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i1.251

Abstract

Coal characterization is very heterogeneous chemically and physically, even within one seam there can be significant differences. Although some areas have coal, the characteristics of coal in one area are not necessarily the same as coal in other areas. This research was conducted to determine the coal rank based on calorific value, coal grade and coal characteristics of Mallawa Formation. This research was conducted using field data collection methods directly in the field in the form of coal samples, outcrop geometry data which were then subjected to laboratory analysis in the form of proximate, sulfur and caloric tests, and analyzing the relationship between total sulfur content in coal and coal ash content. The results showed that the coal rank based on coal calorles is in sub bituminous (low rank), coal grade in very low grade coal, with an average moisture content of 7.78%, average ash content of 39.99%, volatile matter 32.85% and average fixed carbon 19.39 cal/gr, and has a high sulfur content of 2,13%. There is a strong relationship between ash and sulfur content in coal with an R²value of 0 8238.
Characteristics of Epithermal Mineralization in Block Jalur 7 Bolaang Mongondow Regency, North Sulawesi Firdaus F; Malureng, Niciawati Dg; Hasbi Bakri; Wakila, Muhamad Hardin; Anshariah, Anshariah; Rizky Nurul Aulia
Journal of Geology and Exploration Vol. 4 No. 2 (2025): Journal of Geology and Exploration, December 2025
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i2.250

Abstract

Indonesia has the potential as an area containing large reserves of gold and sulfide minerals. One of the areas with the potential to produce gold is Bolaang Mongondow Regency, North Sulawesi Province. This study aims to identify the characteristics of epithermal deposition mineralization, including texture and the presence of mineralization, to determine its paragenesis. The analysis methods used are petrography, mineralogy, and X-ray Diffraction (XRD). As many as six samples in the test well are described megascopically and polarization microscopically, which have been ground into clay-sized fractions and analyzed using the X-ray Diffraction (XRD) method to detect clay minerals and other altered mineral associations. The quartz texture present at the research location based on megascopic observations is generally dominated by saccharoidal, vuggy, mold, banded, and chalcedonic textures. The identified minerals are generally dominated by base metal minerals, with paragenesis in sequence being pyrite, chalcopyrite, galena, hematite, ilmenite, and geothite. Alterations in the research area are in the form of Argillic, Silicic, Silica-Carbonate, and propylitic zones. The study's results concluded that the type of mineralization in Bolaang Mongondow Regency, North Sulawesi, is of the low-sulfidation epithermal type.
Analysis of Disposal Slope Safety Factor in Determining the Safe Distance of Dumping Sequence at Disposal X in Sorowako Area, East Luwu Regency, South Sulawesi Province Nur, Putri; Azikin, Busthan
Journal of Geology and Exploration Vol. 4 No. 2 (2025): Journal of Geology and Exploration, December 2025
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i2.261

Abstract

Slope stability assessment is essential in open discharge designs to prevent failure during discharge operations. This study investigated the safety factors of the disposal slope to determine the safe disposal sequence distance at Disposal X, Sorowako, South Sulawesi, Indonesia. Stability evaluation was carried out using the Limit Equilibrium Method with the Morgenstern–Price formulation at GeoStudio SLOPE/W 2022. The analysis incorporates slope geometry, laboratory-tested geotechnical parameters, equipment-induced soil pressure, and topographic data. Three representative cross-sections were analyzed to identify critical conditions. Preliminary results show that the calculated safety factor is below the minimum regulatory requirement of 1.3. Therefore, design adjustments are applied by modifying the elevation of the slope sequence and controlling the discharge distance. After the redesign, the safety factor increased to 1,360, 1,362, and 1,374, indicating stable conditions. The optimized configuration meets regulatory standards and provides a reliable technical reference for safe disposal operations in the disposal area.
Analysis of Differences in Overburden Volume Calculation Results Based on Survey and Truck Count Method at PT Bina Sarana Sukses Job Site Manambang Muara Enim Sihombing, Johanes Pauji; Harsiga, Edwin; Guskarnali, Guskarnali
Journal of Geology and Exploration Vol. 4 No. 2 (2025): Journal of Geology and Exploration, December 2025
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i2.326

Abstract

PT Bina Sarana is a coal mining contractor located in Darmo village and Pulau Panggung village. Lawang Kidul district, Muara Enim regency, South Sumatera province. The calculation of overburden volume using survey and truck count method on May is a 16,394.177 BCM, percentage 11.57. The aim of this study is to determine the volume of overburden transported based on survey and truck count method, analyze the casual factor and reparation. This study use quantitative method, overburden production on June and July is 910,304.25 BCM and truck count is 975.984,86 BCM. The identification of problem conducted sampling test to know the casual capacity of vessel, CMT 96 is 23.26 BCM, CMT 106 is 25.30 BCM on June and CMT 96 is 23.21 BCM, CMT 106 is 24.87 BCM on July. The identification of problem used improving the calculation formula truck count, percentage routinely conducted sampling test to determine the actual capacity of vessel. The factor that influence of overburden volume known with survey and truck count method along June-July of 2024 are the discrepancy between actual load, the lack of bucket fill factor, the inaccurate of field survey data (inaccurate setting, tool centering, inaccuracy of detailed progress point). After the improvement, the result of overburden volume of truck count on June-July is 924,735.17 BCM, has a decrease in company’s calculation differences of 6.72 % to 1.5 % with the company determination 2.75 %.
Analysis of Landslide Potential Based on Slopes And Rock Weathering Levels in The Mamampang Area, Tombolopao District, Gowa Regency, South Sulawesi Province Safirah, Dwita; Azikin, Busthan
Journal of Geology and Exploration Vol. 4 No. 2 (2025): Journal of Geology and Exploration, December 2025
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i2.340

Abstract

The Mamampang area is composed of the rocks of the Lompobattang Volcano with the dominance of tufa lithology which is fragile and easily weathered. Morphologically, the study area shows the shape of hills to mountains with steep slopes – very steep, so it has a high vulnerability to the movement of soil masses. This study aims to analyze the potential for landslides based on the parameters of the slope and the rate of rock weathering. Slope geometry measurements were carried out using geological compasses and roll meters, then analyzed with the Bermana (2006) classification, while the rate of rock weathering was determined based on the classification of Irfan and Dearman (1978). The results showed that most slopes have a slope angle between 40°–52° with a slope percentage of 50–129% (steep to very steep category), and the weathering rate is at degrees IV–VI (strong weathered to residual soil). The condition of the tufa lithology that has undergone advanced weathering, combined with steep morphology, land use on steep slopes, and intense rainfall, is the dominant factor determining slope instability. The potential for landslides in the Mamampang area is categorized as very high, so mitigation efforts based on geology engineering are needed through land use management and strengthening of slope cover vegetation.
Design of Claystone Selection as Surface Material for Mine Haul Roads at Pit PQRT, Berau Regency, East Kalimantan Province, Indonesia Tiranda, Adi Kurniawan; Azikin, Busthan
Journal of Geology and Exploration Vol. 4 No. 2 (2025): Journal of Geology and Exploration, December 2025
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i2.341

Abstract

Administratively, the study area is located in Samburakat, Gunung Tabur District, Berau Regency, East Kalimantan Province, Indonesia. Geographically, it lies between 117°34′30″–119°33′00″ E and 02°17′30″–02°19′30″ S. This study investigates the mechanisms responsible for the formation of undulating sections on mine haul roads, identifies suitable material sources based on Unconfined Compressive Strength (UCS) values, and evaluates their economic feasibility as surface course materials for mine roads. The methodology integrates field mapping of undulating road sections, material source mapping, frequency analysis of undulating areas, rainfall observation, and lithological characterization within the pit area. Laboratory testing of the physical and mechanical properties of the identified lithologies was conducted to assess their bearing capacity and performance under wet conditions. The results demonstrate that haul road surfaces constructed using sandstone are highly susceptible to the development of undulating deformation due to meteoric water infiltration, which significantly reduces material bearing capacity. In contrast, claystone exhibits superior performance as a road surface material owing to its impermeable characteristics, higher cohesion, and greater resistance to moisture-induced degradation, thereby maintaining subgrade stability and supporting haulage loads more effectively. UCS test results indicate that PQ claystone exhibits the highest strength (13,730 kPa), followed by QR claystone (11,720 kPa) and R claystone (5,028 kPa). Sandstone shows comparatively lower performance under wet conditions despite relatively high UCS values, with QR sandstone (13,550 kPa), PQ sandstone (10,670 kPa), and R sandstone (2,940 kPa). Material extraction strategies were optimized based on proximity to haul roads and UCS values to enhance operational efficiency and economic viability. The findings confirm that claystone, particularly PQ and QR units, is the most suitable material for mine haul road surface construction in the study area The methodology integrates field mapping of undulating road sections, material source mapping, frequency analysis of undulating areas, rainfall observation, and lithological characterization within the pit area. Laboratory testing of the physical and mechanical properties of the identified lithologies was conducted to assess their bearing capacity and performance under wet conditions. The results demonstrate that haul road surfaces constructed using sandstone are highly susceptible to the development of undulating deformation due to meteoric water infiltration, which significantly reduces material bearing capacity. In contrast, claystone exhibits superior performance as a road surface material owing to its impermeable characteristics, higher cohesion, and greater resistance to moisture-induced degradation, thereby maintaining subgrade stability and supporting haulage loads more effectively. UCS test results indicate that PQ claystone exhibits the highest strength (13,730 kPa), followed by QR claystone (11,720 kPa) and R claystone (5,028 kPa). Sandstone shows comparatively lower performance under wet conditions despite relatively high UCS values, with QR sandstone (13,550 kPa), PQ sandstone (10,670 kPa), and R sandstone (2,940 kPa). Material extraction strategies were optimized based on proximity to haul roads and UCS values to enhance operational efficiency and economic viability. The findings confirm that claystone, particularly PQ and QR units, is the most suitable material for mine haul road surface construction in the study area

Page 4 of 4 | Total Record : 40

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