Bencana longsor merupakan salah satu bentuk bencana alam kompleks yang bisa mengancam kehidupan masyarakat, tidak hanya menimbulkan kerusakan fisik tetapi juga dampak sosial dan psikologis yang signifikan. Terjadinya longsor dipengaruhi oleh berbagai faktor, termasuk kondisi geologi, iklim, dan juga aktivitas manusia. Untuk mengurangi risiko terjadinya bencana longsor diperlukan kajian mendalam…
This study was conducted in the Bumi Agung area and its surroundings, Muaradua District, South Ogan Komering Ulu Regency, South Sumatra Province. Geologically, the study area is part of the western part of the South Sumatra Basin, which is a Tertiary-aged back-arc basin consisting of shallow to deep marine sedimentary rocks. The formations exposed at the research site consist of the Baturaja Fo…
Penelitian ini mengkaji hubungan antara sifat fisik dan mekanik tanah dengan daya dukung tanah di sekitar Danau Rayo, Kabupaten Musi Rawas Utara, Sumatera Selatan, pada area seluas 1,2 × 1,2 km. Pengamatan dilakukan pada tujuh titik, yakni BR1–BR5 di zona basin dan BR6–BR7 di zona rim. Daya dukung tanah (qa) dihitung menggunakan metode Terzaghi berdasarkan parameter kohesi, sudut geser dal…
Daerah penelitian terletak di Mehanggin, Kabupaten Ogan Komering Ulu Selatan, Provinsi Sumatera Selatan. Daerah ini memperlihatkan keberadaan batuan vulkanik berupa andesit yang belum banyak dikaji terkait sumber magma dan lingkungan tektonik pembentuknya. Penelitian ini bertujuan untuk mengetahui karakteristik petrografi, afinitas magma berdasarkan analisis geokimia, serta menentukan lingkunga…
Timah (Sn) merupakan logam lunak berwarna putih keperakan yang banyak ditemukan dalam bijih kasiterit (SnO₂) di Indonesia, khususnya di wilayah Sabuk Timah Asia Tenggara seperti Bangka Belitung. Indonesia, bersama dengan Malaysia, Thailand, dan Myanmar, merupakan bagian dari Tin Belt atau Sabuk Timah Asia Tenggara. Selain dalam melakukan hal penambangan, perhitungan cadangan juga penting untu…
Natural disasters are events that threaten the lives of communities and are caused by natural or non-natural factors. They can lead to environmental damage, property loss, psychological impacts, and casualties. One natural disaster that frequently occurs in the research area is landslides, which involve the sudden movement of rock or soil masses and are closely related to scientific processes i…
The research was in Sri Menanti Village, Mekakau Ilir District, South OKU Regency, South Sumatra, the research area is in the volcanic arc route. The research is aimed at identifying Landslide Susceptibility in the research area based on Geomorphology, Stratigraphy and other parameters with the aim of reducing the impact of losses. The research was carried out using a frequency ratio analysis m…
The Gumay Mountains area topographically, it is in the elevation range of 200 to >1000 meters above sea level, with various types of slopes that vary. This landslide analysis observation uses two methods, namely NDVI and relief diversity. NDVI stands for Normalized Difference Vegetation Indices, an analysis that uses vegetation as its main index or parameter. In this case, the presence of veget…
Morphological and geological structure identification based on lineament has been carried out in Pulau Pinang Village and its surroundings, Lahat Regency, South Sumatra Province. The initial stage in identification uses a remote sensing approach through lineament analysis using DEMNAS data. This research is focused on lineament analysis with Digital Elevation Model (DEM) data to identify geolog…
Indonesia is a country rich in natural resources, one of which is coal. The South Sumatra Basin is located in the back arch basin and has several formations containing coal reserves, such as the Muaraenim Formation. This is the reason for the presence of many coal companies, one of which is PT. Gorby Energy in North Musirawas Regency, South Sumatra Province. In this study, a research method was…
Intrusi air laut merupakan salah satu permasalahan pencemaran terhadap air tanah. Permasalahan tersebut berupa penurunan kualitas air tanah yang dimanfaatkan dalam kehidupan sehari-hari masyarakat di wilayah pesisir. Lokasi pemetaan secara administratif terletak di daerah Pantai Pasar Bawah, Kecamatan Pasar Manna, Bengkulu Selatan. Tujuan dari penelitian ini adalah untuk mengidentifikasi pengar…
Paleoecological research was carried out on the Lemau Formation in the Muara Simpur area and its surroundings, Ulu Talo District, Seluma Regency, Bengkulu Province. The research area is in the Bengkulu Arc Fore Basin. The Lemau Formation is composed of carbonate and non-carbonate rocks which are influenced by tidal activity, including breccia, non-carbonate sandstone, carbonate sandstone, mudst…
Penelitian ini membahas mengenai Alterasi Hidrotermal Batuan Granit Formasi Granit Garba pada Daerah Pancur Pungah dan Sekitarnya, Kabupaten Ogan Komering Ulu Selatan, Sumatera Selatan. Keterbentukan batuan granit pada daerah penelitian mengalami proses alterasi hidrotermal yang terpengaruhi oleh aktivitas magmatik. Tujuan dari penelitian ini untuk menentukan karakteristik megaskopis dan mikros…
The research was conducted in the Tanjung Enim area, South Sumatra. Back analysis of slope stability was performed to determine the actual condition of unstable rock masses and slopes by studying the factors that caused the landslides that had occurred. The purpose of this back analysis was to recommend a safe slope design and identify the factors that caused landslides in the study area. This …
Every region in Indonesia is not exempt from disasters, whether natural or social. One area in Indonesia that is the subject of this discussion is South Bengkulu Regency. Based on data from the National Disaster Management Agency, landslides have been a frequent occurrence in the past 10 years. To minimize landslide incidents, an initial mapping of landslide disaster vulnerability areas is nece…
Penelitian ini bertujuan untuk mengidentifikasi kelurusan (lineament) dan menganalisis pola struktur geologi di wilayah Parungponteng dan sekitarnya, yang terletak di Provinsi Jawa Barat. Studi ini dilakukan dengan pendekatan penginderaan jauh menggunakan data Digital Elevation Model Nasional (DEMNAS) sebagai sumber utama dalam ekstraksi kelurusan. Tahapan awal dalam proses penelitian meliputi …
Watersheds are areas where rainfall falls and is collected by mountain ridges before flowing through smaller rivers and into the main river. Rainfall that falls directly on the ground separates into flow water, evaporation water, and infiltration water that eventually enters the river as stream discharge. Surface runoff can occur from excessive rainwater falling to the ground. Runoff can occur …
Penelitian yang dilakukan pada Daerah Kisau dan Sekitarnya, OKU Selatan, Sumatera Selatan. Tujuan dilakukan penelitian untuk mengetahui aspek geologi, faktor penyebab longsor, stabilitas lereng dengan nilai faktor keamanan (FK), mengetahui tingkat kerentanan longsor, dan mitigasi pra-bencana longsor. Metode yang digunakan dalam penelitian yaitu metode bishop dan unconfined compressive strength.…
Batupasir Formasi Ledok merupakan batupasir karbonatan yang mengandung foraminifera, sehingga menarik untuk dikaji terkait lingkungan pengendapan dan juga fasies batuannya. Analisis mikrofasies dan diagenesis dilakukan untuk mengetahui lingkungan pengendapan serta proses-proses diagenesis dan tipe mikrofasies. Penelitian dikhususkan pada satuan batupasir karbonatan Formasi Ledok pada daerah Taw…
Daerah penelitian terletak di Daerah Bumi Kawa Kabupaten Ogan Komering Ulu, Provinsi Sumatera Selatan. Pada daerah penelitian dijumpai struktur batuan beku andesit dan pada analisis petrografi juga ditemui tekstur khusus. Kondisi Geologi tersebut menjadikan daerah penelitian ini menarik untuk dilakukan penelitian lebih lanjut terutama untuk menjelaskan kaitannya dengan keterbentukan batuan beku…
In arranging mining activities, risk management on slope stability is very important, especially in areas that have a high risk of landslides and work accidents. Risk management includes the identification, analysis, and evaluation of risks as well as decision making to reduce or avoid these risks. The results of the study can be recommendations in the basis for making appropriate risk manageme…
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…
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…
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…
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…
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…