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All Journal Geosains Kutai Basin Petrogas : Journal of Energy and Technology
Kaunang, Imanuel
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Chemical Engineering, Chemistry & Bioengineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy

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Karakteristik Maseral dan Peringkat Batubara Daerah Balikpapan Selatan Berdasarkan Analisis Petrografi Organik ., Jamaluddin; Pratikno, Fathony Akbar; Taslim, A. Ibnu; Kaunang, Imanuel
GEOSAINS KUTAI BASIN Vol. 8 No. 1 (2025)
Publisher : Geophysics Study Program, Faculty of Mathematics and Natural Sciences, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/geofisunmul.v8i1.1448

Abstract

This study aims to characterize the maceral composition and determine the rank of coal from the Kampungbaru Formation in the South Balikpapan area based on organic petrography analysis. Coal samples were analyzed using reflectance microscopy to identify and quantify maceral components and measure vitrinite reflectance. The analysis results indicate that the huminite maceral group dominates the coal composition (60.7-84.6%), followed by liptinite (9.8-27.5%), and low inertinite (5.6-11.8%). Vitrinite reflectance ranges from 0.30-0.33%, indicating that the coal is in the lignite to sub-bituminous rank. This low coal rank reflects rapid deposition conditions and an anoxic to suboxic environment that inhibits the complete decomposition of organic matter.
ANALISIS GEOLOGI STRUKTUR DAN PENGARUHNYA TERHADAP SISTEM HIDROTERMAL DAERAH SAMBOJA km.38, KUTAI KARTANEGARA .Jamaluddin, Jamaluddin; Kaunang, Imanuel
PETROGAS: Journal of Energy and Technology Vol 7, No 1 (2025): MARCH
Publisher : Sekolah Tinggi Teknologi MIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58267/petrogas.v7i1.181

Abstract

This study analyzes the influence of geological structures on the hydrothermal system in the Samboja km.38 area, Kutai Kartanegara, based on geochemistry and structural geology data. The analysis results show that the pH values range from 6.5 to 7.6, TDS from 502 mg/L to 592 mg/L, and electrical conductivity (EC) from 1005 mS/cm to 1084 mS/cm. The hot water temperature ranges from 37.1°C to 39°C indicating hydrothermal activity. The geological structure analysis reveals the presence of shear joints with dominant NW-SE and NE-SW orientations, serving as migration pathways for hydrothermal fluids. The presence of thrust faults is identified as a key factor controlling the movement of geothermal fluids. These findings indicate that geological structures play a crucial role in determining the distribution and characteristics of the hydrothermal system in the study area.
KAJIAN PENDAHULUAN POTENSI PANAS BUMI TEMPERATUR RENDAH-SEDANG DI CEKUNGAN KUTAI: STUDI KASUS DAERAH SAMBOJA DAN DONDANG Jamaluddin, Jamaluddin; Datu, Rosdiana Angel; Kaunang, Imanuel
PETROGAS: Journal of Energy and Technology Vol 7, No 2 (2025): OCTOBER
Publisher : Sekolah Tinggi Teknologi MIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58267/petrogas.v7i2.202

Abstract

This study presents a preliminary survey to evaluate the low–medium temperature geothermal potential in the Kutai Basin, particularly in the Samboja and Dondang areas. Field observations were conducted at three hot spring sites in Samboja and two sites in Dondang. Geochemical analysis indicates that the hot springs in Samboja exhibit pH values ranging from 6.5 to 7.6 (neutral to slightly alkaline) with electrical conductivity (EC) values between 1005 and 1184 µS/cm. In contrast, the hot springs in Dondang display relatively neutral pH values (7.0–7.5) and slightly higher EC values ranging from 1120 to 1295 µS/cm. These characteristics suggest that the geothermal system in both areas is controlled by the interaction of meteoric water with sedimentary rocks of the Balikpapan and Kampungbaru formations, which are widely exposed in the Samboja–Dondang region. The moderate to relatively high EC values reflect ongoing mineral dissolution processes of silicates and carbonates, with a possible contribution of fluids channeled through active fault fractures acting as migration pathways for geothermal fluids. Geologically, the occurrence of hot springs along the Kutai fault system and sedimentary lithologies indicates that the Samboja and Dondang areas host a promising low–medium temperature geothermal system associated with shallow hydrothermal circulation.
Co-Authors .Jamaluddin, Jamaluddin Datu, Rosdiana Angel Jamaluddin Jamaluddin Jamaluddin Jamaluddin Pratikno, Fathony Akbar Taslim, A. Ibnu