| Issue |
E3S Web Conf.
Volume 688, 2026
The 2nd International Conference on Sustainable Environment, Development, and Energy (CONSER 2025)
|
|
|---|---|---|
| Article Number | 01005 | |
| Number of page(s) | 8 | |
| Section | The Role of Geosciences in Sustainability, Disaster Mitigation, and Resource Management | |
| DOI | https://doi.org/10.1051/e3sconf/202668801005 | |
| Published online | 20 January 2026 | |
Identification of coal distribution based on drilling and geophysical logging: A case study from Samurangau, East Kalimantan
Department of Geological Engineering, Faculty of Engineering and Planning, Jl. Babarsari, Sleman, Yogyakarta, 55281, Indonesia
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract
Coal is one of the major energy resources, and its utilization is strongly influenced by the quality and spatial distribution of subsurface reserves. This study aims to identify the position, thickness, and distribution pattern of coal seams in the Samurangau area, Biu, Muara Samu District, Paser Regency, East Kalimantan Province. The analysis was carried out using drilling and geophysical logging data, focusing on gamma ray and density log responses from several shallow boreholes. The results reveal 13 coal seams, sequentially named seams 15 to 3 from top to bottom, with thicknesses ranging from 0.40 to 18.10 m and occurring at depths of 1.50-233.10 m. Splitting was observed in seams 9, 8, 4, and 3, while some seams also exhibit thinning. Overall, the seams show a Northwest-Southeast distribution trend with a general dip toward the Southwest. These findings provide essential information to support further exploration, geological modeling, and mine planning in the study area.
© The Authors, published by EDP Sciences, 2026
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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