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Buletin Sumber Daya Geologi
Published by Pusat Sumber Daya Mineral Batubara dan Panas Bumi
ISSN : 19075367     EISSN : 25801023     DOI : -
Core Subject : Science, Education, Social, Engineering,
Education Energy Engineering Environmental Science
uletin Sumber Daya Geologi merupakan Makalah berkala ilmiah terakreditasi LIPI bidang mineral, energi fosil, dan panas bumi. Makalah ini terbit tiga nomor dalam satu tahun pada bulan Mei, Agustus dan November. Pada Tahun 2010, Buletin Sumber Daya Geologi mendapat Akreditasi B sebagai majalah Berkala Ilmiah, kemudian akreditasi ulang Tahun 2012, dan akreditasi terbaru di Tahun 2015 untuk tiga tahun kedepan dengan nomor ISSN (print) : 1907-5367. Tahun 2017 Buletin Sumber Daya Geologi mendapatkan nomor eISSN : 2580 - 1023 untuk versi onlinenya.
Arjuna Subject : -
Articles 751 Documents
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POLA ALIRAN PANAS BERDASARKAN ANALISIS FLUIDA DAN MINERAL UBAHAN DI DAERAH PANAS BUMI SORIK MARAPI, KABUPATEN MANDAILING NATAL, PROVINSI SUMATRA UTARA: HEAT FLOW PATTERN BASED ON ANALYSIS OF GEOTHERMAL FLUID AND ALTERATION MINERAL IN SORIK MARAPI REGION, MANDAILING NATAL DISTRICT, NORTH SUMATRA PROVINCE Azizi, Hisyam Azhar; Agus Didit Haryanto; Johanes Hutabarat; Dicky Muslim; Dewi Gentana; Ryan Hidayat
Buletin Sumber Daya Geologi Vol. 15 No. 3 (2020): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v15i3.309

Abstract

Sorik Marapi geothermal area in Mandailing Natal Regency, North Sumatra Province has a high-temperature geothermal system that is interpreted from the chemical characteristics of hot springs. The presence of alteration minerals such as epidot in exploration well cutting samples strengthens the estimated reservoir temperature reaches 235⁰C. The presence of hot water are more acidic hot spring around fumaroles and the minerals obtained from the drill well reflect the upflow zone while the hot spring group of neutral chloride water in the north with lower elevation reflects the outflow zone of the geothermal system here. This is a characteristic of hot fluid flow that occurs in geothermal areas of volcanic systems with steep terrain as well as Sorik Marapi area.
KARAKTERISTIK BATUBARA TERPENGARUH INTRUSI DI TAMBANG AIR LAYA, SUMATRA SELATAN DAN POTENSINYA SEBAGAI MATERIAL UNTUK PEMBUATAN GRAFIT SINTETIS: THE CHARACTERISTICS OF HEAT-AFFECTED COAL IN AIR LAYA MINE, SOUTH SUMATRA AND ITS POTENTIAL AS AN ALTERNATIVE SOURCE OF SYNTHETIC GRAPHITE Arsha Maulana; Ferian Anggara
Buletin Sumber Daya Geologi Vol. 15 No. 3 (2020): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v15i3.310

Abstract

Graphite can be applied in various uses for example as a heat resistant materials, batteries, and electrodes. Graphite material can be obtained from synthetic graphite which produced from anthracite coal that is heated at 2000ºC or above. Naturally heat affected coal can be found in Tambang Air Laya (TAL), Tanjung Enim, South Sumatra where the coal is affected by the presence of igneous intrusion. According to these conditions, it is important to conduct the research to determine the characteristics of heat affected coal and its potential as an alternative source of synthetic graphite. Four samples of heat affected coal obtained from four seams with varying distances to the body of igneous intrusion are prepared for several analyses, namely petrographic, random vitrinite reflectance (Rvr), proximate, X-Ray Diffractometry (XRD), Total Carbon (TC), Total Organic Carbon (TOC), and Total Inorganic Carbon (TIC), as well as micro-Raman spectroscopy. The heat affected coal shows the tendency of increasing vitrinite reflectance and fixed carbon content and decreasing moisture and volatile matter towards the igneous intrusion body. The heat affected coal (A1 Coal) with the closest distance to the igneous intrusion body has the highest rank (low volatile bituminous coal; %Ro= 2,01%) and mineral percentage. A1 Coal is associated with mineral lempung such as illite, smectite, and rektorit that can increase the degree of crystalinity in the process of coalification and that would catalyze the formation of synthetic graphite in the next process.
STUDI KOMPARASI PEMODELAN INVERSI 1-D, 2-D, DAN 3-D DATA MAGNETOTELLURIK DI DAERAH PANAS BUMI LOKOP, PROVINSI ACEH: COMPARATIVE STUDY OF MAGNETOTELLURIC 1-D, 2-D, AND 3-D INVERSION MODELLING AT LOKOP GEOTHERMAL AREA, PROVINCE OF ACEH Wiwid Joni; Iqbal Takodama
Buletin Sumber Daya Geologi Vol. 16 No. 1 (2021): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v16i1.317

Abstract

Magnetotelluric (MT) method can determine conductivity structure in geothermal area which could be interpretated as smectite clay (clay cap) is commonly used to help target geothermal wells and assess resource capacity. In order to process MT data, we can do 1-D, 2-D, and 3-D inversion modelling to produce a realistic MT model data. 1-D inversion is very easy to do, where this model can support an effective quality assurance of each MT station data. 1-D inversion is usually able to characterize the overall resistivity geometry of a geothermal clay cap, although not abrupt edges or deep variations. In order overcome this uncertainty, 2-D inversion can be performed. However, 2-D inversion can't work properly if our MT survey in complicated geological environments.The limitations of 1-D and 2-D inversions can be fixed by performing 3-D inversion. The modelling application was carried out using MT data in Lokop geothermal area, Province of Aceh.1-D and 3-D modeling result can better describe the possibility of clay cap in Lokop geothermal area.
KARAKTERISTIK CLEAT TERHADAP PERMEABILITAS DAN KANDUNGAN GAS PADA BATUBARA ANGGOTA M3 FORMASI MUARAENIM DI DAERAH MANGUNJAYA, PROVINSI SUMATRA SELATAN: CLEAT CHARACTERIZATION ON PERMEABILITY AND GAS CONTENT IN M3 MEMBERS OF MUARAENIM FORMATION AT MANGUNJAYA AREA, SOUTH SUMATRA PROVINCE Ibrahim, Muhammad Abdurachman; Harianto, Tito
Buletin Sumber Daya Geologi Vol. 16 No. 1 (2021): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v16i1.318

Abstract

South Sumatra Basin is the second largest resource of coal basin in Indonesia. The abundance of coal in this basin has opened up opportunities to exploring coal bed methane. Gas content and permeability affect the potential of coal bed methane in an area. Coal permeability is highly controlled by the cleat system that develops in the coal seam. Studies on cleat characterization in coal are mandatory to see the possible escape routes of methane gas in coal. This research was conducted to determine the relationship between the characteristics of coal, cleat system, and permeability. Coals from M3 of Muaraenim Formation were sampled for microcleat analysis. Coals from M3 is not to deep, having a good coal thickness, and one of the coal bed methane seams target, M3 members can be another coal bed methane target, besides M2 members which have proved to be coal bed methane target. Microcleat analysis was performed to observe face cleat, butt cleat, aperture and spacing. The correlation between permeability to gas content and depth of coal, illustrates that the greater permeability, the greater gas content.
KAOLINITISASI DAN MOBILITAS UNSUR TANAH JARANG PADA PROFIL PELAPUKAN BATUAN GUNUNGAPI DI PUNCAK MANDEH, SUMATRA BARAT: KAOLINITIZATION AND RARE EARTH ELEMENTS MOBILIZATION OF A VOLCANIC ROCK WEATHERING PROFILE IN PUNCAK MANDEH, WEST SUMATRA Irzon, Ronaldo; Kurnia; Sendjaja, Purnama; E. Setiawan, Verry
Buletin Sumber Daya Geologi Vol. 16 No. 1 (2021): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v16i1.312

Abstract

The weathering process occurs on the Earth's surface, especially in tropical climates, and causes the parent rock's mobilization of elements. Weathering is interesting because it is often associated with the enrichment of economic materials such as iron, alumina, and REEs. The weathering profile of Tertiary volcanic rocks is spread across tropical Sumatra. This study aims to describe REEs' kaolinization and mobilization process on the weathering profile of volcanic rocks in the east of Mandeh Peak, West Sumatra. XRF and ICP-MS devices are utilized to measure the abundance of major oxides, trace elements, and REEs. The increase in IOL is proven to occur in the same direction as weathering levels. A triangular diagram of SiO2-Al2O3-Fe2O3T indicates kaolinization on weathering at Mandeh Peak. Feldspar and mica were prone to weathering and instantly turn into kaolinite in the early stages of weathering to explain the main oxide variations in weathering profiles. The weathering process has increased the amount of alumina and iron significantly relative to the parent rock. There is no REEs enrichment on any of the weathering horizons other than its composition on the parent rocks. Part of Ce is oxidized into Ce4+ and left on the saprolite horizon. This condition makes Ce's mobility in the direction of weathering level is different from other REEs.
KARAKTERISTIK SERPIH MINYAK PADA FORMASI SINAMAR BERDASARKAN DATA PENGEBORAN BRP-02 DI DAERAH RANTAU PANDAN PROVINSI JAMBI: CHARACTERISTICS OF OIL SHALES IN SINAMAR FORMATION BASED ON BRP-02 DRILL HOLE DATA AT RANTAU PANDAN AREA JAMBI PROVINCE Tobing, Robet Lumban
Buletin Sumber Daya Geologi Vol. 16 No. 1 (2021): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v16i1.313

Abstract

Oil shales is defined as fine sedimentary rock that contains organic material and can produce oil when extracted. The Sinamar Formation in the study area is thought to be a carrier for oil shales. This formation is located in the western and southeastern parts of the study area and is thought to have age of Oligocene. Based on BRP-02 well data, lithology of the study area consists of shales, siltstone, sandstone and carbonaceous clays. The purpose of this study was to determine the character of the oil shales in the Sinamar Formation, which is scattered in the Rantau Pandan area, Bungo Regency, Jambi Province. As many as 25 samples of rock obtained from drilling wells were analyzed for maceral, pyrolysis, total organic carbon (TOC) and extraction of rock. The results of the maceral analysis show that the rock samples are dominated by liptinite maceral. TOC analysis show that the organic material in the samples is about 3.40 to 17.60% which is potentially good to very good as hydrocarbon source rock. The level of organic maturity is immature to over maturity. Based on the rock extraction data from the samples, result of t he oil content is about 10 to 150 liters/tons of rock with average 56 liters/tons of rock.
TINJAUAN PUSTAKA KARAKTERISASI DAN POTENSI PEMANFAATAN FLY ASH DAN BOTTOM ASH (FABA): REVIEW ON CHARACTERIZATION AND UTILIZATION POTENTIAL OF FLY ASH AND BOTTOM ASH (FABA) Ferian Anggara; Himawan T.B.M Petrus; Dea Anisa Ayu Besari; Hotden Manurung; Febry Yulindra Abdi Saputra
Buletin Sumber Daya Geologi Vol. 16 No. 1 (2021): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v16i1.320

Abstract

Fly ash and bottom ash (FABA) is defined as waste residu that is produced from coal combustion process in electric power plant. Its production will increase due to high demand of electric energy. It commonly consists of silica, alumina, ferric oxide, and others oxide. Coal ash is also an economically promising resource for extraction of several valuable elements, including Ge, Ga, rare earth elements and yttrium (REY), Nb, Zr, V, Re, Au, Ag, and base metals such as Al. Physical and chemical characteristics of FABA are important because it will affect their option of re-use and disposal method. Other potential utilization for FABA was involved geotechnical applications such as geopolymer material. Cenospheres are one of the most valuable materials found in FABA. To increase the potential use of FABA, many separation techniques have been developed to extract the value-added components, including: cenospheres, valuable metal and trace elements such as rare earth element and yttrium (REY), also the unburned carbon.
SISTEM PANAS BUMI TEMPERATUR RENDAH-SEDANG PADA CEKUNGAN KUTAI DAN REKOMENDASI PEMANFAATANNYA: LOW-MEDIUM GEOTHERMAL SYSTEM IN KUTAI BASIN AND ITS UTILIZATION Andri Eko Ari Wibowo; Mochamad Nur Hadi; Dikdik Risdianto
Buletin Sumber Daya Geologi Vol. 16 No. 2 (2021): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v16i2.311

Abstract

Geothermal development in Indonesia still dominated in volcanic geothermal system which is used as indirect use utilization (electricity), whereas about 70% of 357 geothermal location in Indonesian associate with non-volcanic geothermal system. Lack of subsurface information such as well data and reservoir temperature as well as low economic value that cause geothermal utilization in non-volcanic systems are less develop. Therefore, the purpose of this research is to provide the information of geothermal fluid characteristic such as type, origin, and fluid temperature in Kalimantan, especially in East Kutai Basin and also the recommendation of its utilization. There are five hot spring manifestations with a temperature of 42 to 55°C, neutral pH, bicarbonate type, and located in the immature water zone. This fluid characteristics correlate with the lithology of the area which is dominated by sedimentary rocks. The results of the O18 and D isotopes indicate that the source of the geothermal fluid comes from meteoric water. Meteoric water flows to subsurface and heated by hot rock from geopressured process, which then forms reservoir fluid. This old hydrothermal system has reservoir temperature is about 70 to 170oC with the formation of its geothermal system is affected by the sedimentary environment. The geothermal system in the Kutai Basin has a reservoir with medium-low temperatures, therefore its utilization is more suitable for direct utilization. Recommendation of geothermal direct use such as aquaculture, agro industry, tourism, and balneoteraphy can be applied on all geothermal system in Kutai Basin. Santan Tengah, Samboja and Tamapole-Dondang are possible for balneoteraphy to heal bone-ache due to high bicarbonate concentration (>500 ppm). There also an opportunity to develop indirect use for electricity by using binary cycle technology in Tamapole-Dondang (170° C) and Samboja (150° C).
KARAKTERISTIK FLUIDA PEMBAWA MINERALISASI PIT RAMBA JORING DEPOSIT MARTABE, SUMATRA UTARA: MINERALIZATION BEARING FLUID CHARACTERISTIC OF RAMBA JORING PIT MARTABE DEPOSIT, NORTH SUMATRA Arifin, Asri; Rosana, Mega Fatimah; Yuningsih, Euis Tintin; Yoseph CSSSA, Boy
Buletin Sumber Daya Geologi Vol. 16 No. 2 (2021): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v16i2.314

Abstract

The research aims to determine hydrothermal evolution of the mineralisation bearing fluid contained in the Ramba Joring Pit, including temperature, pressure, density and depth of mineralisation deposition formation. This research uses the fluid inclusion analysis. Inclusion sampling was carried out on two main textures of ore namely vuggy silica texture formed at range Th 331ºC to 394ºC, Tm -15.19ºC to -12.94ºC with salinity of 14.42 wt% - 14.89 wt%. NaCl equivalent and brecciated texture formed at range Th 287.8ºC – 398.2ºC, Tm -14.89ºC to -11,76ºC and salinity 13.91 wt% – 14.87 wt%. NaCl equivalent. The positive correlation between the homogenization temperature of mineralization formation and salinity of the solution indicates that the leaching process that forms cavities in rocks occurs at the initial stage of the hydrothermal alteration process that begins with the leaching process forming cavities (silica vuggy) followed by the process of silicification with brecciated texture, the deposition of mineralization takes place at this stage. The origin of the solution forms a hydrothermal deposition is a type of basinal water-seawater solution in the form of connate water which is still influenced by surface water/meteoric water, also shows an indication of a relationship with magmatic water. The density of metal-forming fluids ranges from 0.8 gr/cm3 – 0.9 gr/cm3 while the process that takes place in the formation of ore in Ramba Joring Pit is isothermal mixing with a slight warming effect/boiling.
IDENTIFIKASI ZONA RESERVOAR PANAS BUMI BERDASARKAN ANALISIS FAULT FRACTURE DENSITY CITRA DIGITAL ELEVATION MODEL ALOS PALSAR DI GUNUNG RAJABASA: IDENTIFICATION OF GEOTHERMAL RESERVOIR ZONE BASED ON FAULT FRACTURE DENSITY ANALYSIS OF DIGITAL ELEVATION MODEL ALOS PALSAR IMAGE IN MOUNT RAJABASA Darmawan, I Gede Boy; Fahlevi, Dirga Ilham; Yassar, Muhammad Farhan; Pramudya, Fachri Aldi
Buletin Sumber Daya Geologi Vol. 16 No. 2 (2021): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v16i2.315

Abstract

Mount Rajabasa is one of the geothermal fields in Sumatra that has not been exploited until now. The existence of manifestations in this area is an indication of the potential existence of geothermal reservoirs. This study aims to identify high permeability zones based on Fault Fracture Density (FFD) analysis and to analyze the relationship between the characteristics of the geothermal fluid path structure to the surface and the potential location of the geothermal reservoir. The FFD method is carried out using the Digital Elevation Model (DEM) ALOS PALSAR image to map the lineaments associated with fault zones and fractures, especially in the manifestation area. Field observations were made to confirm the FFD results. The dominant direction of the identified structures is partially aligned and in line with the Sumatra fault system, namely the northwest-southeast direction and partly shows a response that intersects the main fault system. Furthermore, the results of the FFD analysis show a significant relationship between the weak zone (fracturing) and the geothermal reservoir zone as indicated by the high structural density pattern in the upflow zone in the Way Sulfur manifestation, while the outflow zone in the hot springs of Mount Botak is at a low structural density.

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