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All Journal Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Jurnal Bio-Geo Material Dan Energi
Adithya, Bagus
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Agriculture, Biological Sciences & Forestry Humanities Chemistry Education Electrical & Electronics Engineering Energy Physics

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Density Log Correlation with Coal Proximate in the Muaraenim Formation, Musi Banyuasin, South Sumatera Khairani, Mutia; Amin, Sarwo Sucitra; Adithya, Bagus
Jurnal Bio-Geo Material Dan Energi Vol. 5 No. 2 (2025): Journal of Bio-Geo Material and Energy (BiGME), September 2025
Publisher : PUI BiGME Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/j-bigme.v5i2.43110

Abstract

This research is located in the PT BSPC area using the well logging method as the beginning of coal exploration activities. There are 7 well logging data with coal quality values in the form of moisture content, ash content and calorie data. From processing and interpretation using WellCAD 5.7 software, the lithology of the research area was obtained in the form of clay, coal, sandstone, carbonseous clay and coal. At 7 points, 9 coal seams were found, namely seams A11, A1, A, B11, B, B, C, D1 and D. The thickest seam is seam B with an average thickness of 5.85 m. From the correlation, the relationship of log density with proximate data had a fairly strong relationship except for the caloric value which had no correlation with the coal seam C in the study area. For the most influential correlation to the density value is the moisture content. The quality of seam B coal is better than seam C coal. On average, seam B has a calorie of 5531 cal/gr while seam C is lower at 5153 cal/gr. These two seams have a fairly high ash content, but seam B has a lower moisture content of 16.13% while seam C has a moisture content of 16.65%.
Evaluasi Batuan Induk Formasi Talang Akar Bawah sebagai Prospek Hidrokarbon dan Warisan Geologi di Taman Nasional Bukit Duabelas, Sub-Cekungan Jambi Rus, Muhammad Rus Dody Alfayed; Siregar, Anggi Deliana; Adithya, Bagus; Anjani, Ratu; Syaifudin, M.
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1711

Abstract

The Bukit Duabelas National Park (BDNP) area, Sarolangun Regency, is located within the Jambi Sub-Basin, which forms part of the South Sumatra Basin and has long been recognized as a hydrocarbon-producing region. This study aims to evaluate the geochemical characteristics of the Lower Talang Akar Formation source rock, including organic matter quantity, quality, thermal maturity, organic matter origin, and depositional environment. The applied methods include Total Organic Carbon (TOC) analysis, Rock-Eval Pyrolysis, vitrinite reflectance (Ro), and biomarker analysis using Gas Chromatography (GC) and Gas Chromatography–Mass Spectrometry (GC–MS) on shale outcrop samples. The results indicate that the Lower Talang Akar Formation contains very good to excellent organic matter richness, with TOC values ranging from 3.18% to 4.71%. The organic matter quality is dominated by Type II kerogen, indicating a strong potential for oil generation. Biomarker analyses suggest that the organic matter is primarily derived from algal and bacterial sources with contributions from terrestrial input, deposited in a transitional (paralic) environment under anoxic to suboxic conditions. Based on Tmax values, vitrinite reflectance, and biomarker maturity parameters, the Lower Talang Akar Formation source rock is classified as thermally immature. Despite its immature maturity level, the geochemical characteristics indicate favorable hydrocarbon potential. These findings provide an important basis for further hydrocarbon exploration and support the designation of the Bukit Duabelas National Park area as a geological heritage (geoheritage) site with significant scientific value within the Jambi Sub-Basin.  
Co-Authors Amin, Sarwo Sucitra Anjani, Ratu Khairani, Mutia M. Syaifudin Rus, Muhammad Rus Dody Alfayed Siregar, Anggi Deliana