The South Sumatra Basin, precisely located in the back arc basin, has formations that contain coal, including the Muara Enim Formation, Airbenakat Formation and Talang Akar Formation. One of them is PT Bukit Asam Tbk, Muara Enim Regency, South Sumatra which has a coal mining site. The method used in this research is the stratigraphic correlation method, where this method can help in knowing the…
Administratively, the research area is located in the PT. Bukit Asam Tbk precisely at PIT ZA, Sirah Pulau Village, East Merapi District, Lahat Regency, South Sumatra Province. This study aims to analyze geological conditions, engineering geology and the value of safety factors and the probability of avalanches in the research area. In addition, this study aims to recommend an ideal slope design…
One of the main needs and aspects that affect human life is water. Water is an important necessity and plays a major role for living creatures in this world. Every region certainly has various water problems, both in terms of quantity and quality of water in that region. Water is divided into two types, namely groundwater and surface water. Research in the Indralaya Mulya area will discuss grou…
Natural or intact peatlands are important carbon stores because they can sequester large amounts of carbon. An estimated 500-700 Gt of organic carbon globally is stored in peatlands. The physical characteristics of peat that are important in its utilization include moisture content, bulk density (BD), total pore space, soil permeability, soil color, and peat maturity. This research method uses …
Penelitian dilakukan di Daerah Kayu Ajaran dan sekitarnya, Bengkulu Selatan dengan luas kawasan 9 x 9 Km untuk mendapatkan informasi struktur bawah permukaan menggunakan metode anomali gravitasi. Penelitian bertujuan untuk menganalisis dan merekonstruksi struktur bawah permukaan dan memahami keterkaitannya dengan hasil observasi lapangan. Anomali gravitasi diperoleh dari data Global Gravity Mod…
The increase in volcanic activity at Mount Marapi, which occurs periodically from January to March 2024, causes a buildup of volcanic material around the crater and on the mountain slopes. Recorded until June 2025 volcanic activity on this mountain occurred several times and experienced eruptions that spewed volcanic material at a radius of 2 - 3 km from the crater of Mount Marapi. This accumul…
Regionally, the Bungin Campang Village area located in Simpang District, South OKU Regency, is located in the Palembang sub-basin, which is an integral part of the South Sumatra Basin. The South Sumatra Basin is a back-arc basin formed in the Tertiary period due to tectonic interaction between the Sunda Shelf, which is part of the Asian continental plate, and the Indian Ocean plate. Geologicall…
Bencana longsor merupakan ancaman serius di Kabupaten Lahat, Sumatera Selatan, dipicu oleh kondisi geologi, iklim, dan aktivitas manusia, terutama kemiringan lereng curam, curah hujan tinggi, dan kerentanan geologis. Penelitian ini bertujuan memetakan daerah rawan longsor dengan memanfaatkan Sistem Informasi Geografis (SIG) melalui data citra satelit dan peta topografi. Fokus utama adalah ident…
High rainfall can affect many thing in mining operational activities, therefore an optimal drainage system is needed to handle water from entering the minig area. The aim of this research is to determine the optima drainage system planning process for the research location. Rainfall will be calculated using the Gumbel method, the result of calculation for 10 years is 145.19 mm/day. With a Minin…
This study aims to evaluate the slope stability at Pit X, located within the open-pit mining area of PT Bukit Asam, Muara Enim Regency, South Sumatra. This location was previously used as a disposal area for mining waste material and has heterogeneous geotechnical characteristics that pose a potential risk of slope instability. The approach used in this study combines the Limit Equilibrium Meth…
The Darmakradenan area, Banyumas Regency, Central Java, is part of the Banyumas Basin, which is deposited in a back-arc basin behind a magmatic arc. The Tapak Formation limestone in this area was formed during the peak of Java's tectonic activity, which caused regional uplift and northward shifting of the volcanic arc, transforming the depositional environment into a barrier reef. This study ai…
Tanjung Baru area, Ogan Komering Ulu, South Sumatra Province has high rainfall which can be a contributing factor to flooding. One of the factors causing flooding is the limited ability of the soil to absorb water and can inhibit the movement of water in the soil. This research analyzes flood vulnerability in Tanjung Baru, Ogan Komering Ulu, using the Weighted Overlay method and the soil permea…
Pahat merupakan suatu alat potong pdaa proses pemesinan untuk membentuk benda kerja , banyak jenis pahat salah satunya pahat karbida yang memiliki keuletan yaang tinggi. Cairan pemotongan adalah minyak sederhana yang diaplikasikan untuk mendinginkan dan melumasi alat pahat dan benda kerja. Selain itu juga berfungsi sebaagai pembersih, untuk memperhalus permukan benda kerja dan pembuang gram. Pa…
Tectonically, the study area is located in the Majalengka Sub Basin, part of the Bogor Basin, which was deposited in a deep-sea turbidite environment. The turbidite current mechanism during the formation of the Cinambo Formation resulted in the deposition of sandstones with distinctive characteristics. In the Cengal area, research related to diagenesis control on the evolution of porosity of Ci…
Sekuen stratigrafi sebagai suksesi strata yang diendapkan selama siklus penuh perubahan akomodasi atau pasokan sedimen dengan dibatasi oleh bidang ketidakselarasan subaerial dan keselarasan korelatif laut. Pada sekuen stratigrafi, ruang akomodasi merupakan area yang tersedia untuk akumulasi sedimen potensial yang dipengaruhi oleh fluktuasi muka laut dan penurunan permukaan dasar cekungan. Paleo…
Research on limestone microfacies studies was carried out in the Tuban Formation, Ngrayong Member, located in the Ngujuran and Surrounding areas, Bancar District, Tuban Regency, East Java. The research area is in the North East Java Basin, Rembang zone. The Tuban Formation of the Ngrayong Member is composed of carbonate rocks, including limestone, sandstone and claystone inserts. The clastic li…
Air merupakan aset karakteristik yang berperan besar dalam keberadaan makhluk hidup di planet ini. Setiap daerah hampir selalu harus berhadapan dengan masalah air baik dari segi kuantitas maupun kualitasnya. Air memiliki 2 jenis yaitu air permukaan dan air tanah. Penelitian kali ini dilakukan di Daerah Simpang Tonang adalah penelitian mengenai air tanah. Air tanah merupakan air yang bergerak di…
This research was conducted on the Talang Akar Formation located in the South Sumatra Basin. The main focus of the study was the analysis of facies and sedimentation environments in the study area. The purpose of this fascies analysis is to examine more deeply the distribution of facies and the sedimentation environment in the Root Cement Formation from the results of the analysis can be known …
The North West Java Basin is one of the major hydrocarbon basins in Indonesia that has been extensively explored and has great potential for the development of oil and gas reserves. The Baturaja Formation layer interval is the focus of the study because it has significant reservoir potential. Administratively, the research site is located in the northern Java Sea in the “ANDRI” field which …
One of the problems that often occurs in Indonesia, especially in tropical regions such as Bengkulu Province, is drought that occurs when rainfall decreases extremely or prolonged. According to McKee et al. (1993), drought is a condition when rainfall is below normal in a certain period and can be measured using the SPI (Standardized Precipitation Index). This study aims to analyze the level of…
The research is located in Kapur IX District, Limapuluh Koto Regency, West Sumatra. Tectonically, the research area is in the Central Sumatra Sub-Basin and Lubuk Sikaping. The research aims to identify and assess geotourism potential and efforts to develop geosite potential. The research was carried out using preliminary study methods, field observations, laboratory analyis and methods Modified…
The research location is in the Datar Lebar and Surrounding Areas which are part of the Bengkulu Basin which has active tectonic conditions. This research was conducted to determine the control of geological structure in determining the zoning of ground movement susceptibility. The geological structure that develops in rocks is known as a weak zone that is susceptible to deformation, whether ca…
The research location is in the Tanjung Betung II Area and its surroundings which are included in the Bengkulu basin which has active tectonic conditions. This study was conducted to determine the control of geological structures on landscape conditions which also used morphotectonic analysis to determine the level of tectonic activity by conducting a quantitative geomorphological approach in t…
Geological processes can describe good information about the depositional environment and geological age of the research area through the texture and characteristics of the lithology that composes it. The research was conducted by focusing the discussion on the limestone of the Baturaja Formation located in Lengkiti District and its surroundings, South Ogan Komering Ulu Regency which is include…
Garba Formation is located at the boundary of the South Sumatra Basin of Late Jurassic-Early Cretaceous age. This research was conducted in Bumi Genap area, South Ogan Komering Ulu Regency, South Sumatra Province. In the research area found basalt rocks that have various igneous structures and in petrographic analysis also found a variety of special textures. These geological conditions make th…
The research that has been carried out administratively located in Tanjung Aur II and its surroundings, South Bengkulu Regency, Bengkulu Province. The aims of this research are to identifying geological features from the aspects of geomorphology, stratigraphy, and especially geological structures. The results of field observations were recorded into a kinematic model of geological structures an…
The condition of coal is greatly influenced by the geological conditions that occur in its depositional environment. Coal is formed through a deposition process that occurs in specific locations called depositional environments. This depositional environment can be a swamp, delta, river, lake, or area such as a basin where plant material accumulates and settles. This condition will affect the q…
Landslides are natural disasters involving the sudden movement of a rock or soil mass. Natural disasters can affect geological, atmospheric, and anthropogenic factors. This study was conducted to reveal lineament in controlling landslides that have the potential to occur in the Kemang area and its surroundings, Cianjur Regency, West Java. Lineament is considered an essential geological structur…
Based on petrographic analysis, the research studies the limestone diagenesis of Ngrayong Member of the Tuban Formation, Kayen Region, Bancar District, Tuban Regency, East Java. Ngrayong a Member of the Tuban Formation is one of the formations included in the North East Java Basin. Regionally, the research area is included in the North East Java Basin. The limestone of Ngrayong a Member of the …