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Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources)
Published by Kementerian Energi dan Sumber Daya Mineral
ISSN : 08539634     EISSN : 25494759     DOI : -
Core Subject : Science, Education, Social, Engineering,
Education Energy Engineering Environmental Science
Jurnal Geologi dan Sumberdaya Mineral (JGSM) is an Indonesian scientific journal published by the Center for Geological Survey, Geological Agency, Ministry of Energy and Mineral Resources. The journal receives Indonesian or English articles. Those articles are selected and reviewed by our professional editors and peer reviewers.
Arjuna Subject : -
Articles 341 Documents
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Karakteristik dan Sebaran Mineralisasi Logam Mulia dan Logam Dasar di Wilayah Kabupaten Sanggau, Kalimantan Barat Sulistyawan, Isnu Hajar
Jurnal Geologi dan Sumberdaya Mineral Vol 18, No 4 (2017): Jurnal Geologi dan Sumberdaya Mineral
Publisher : Pusat Survei Geologi

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Abstract

Sanggau and surrounding areas are geologically have various of the type and age of rocks. Therefore, this study is aimed to explore the possible influence of the diversity of geological conditions on mineralization occurring in this region, especially concerning the presence of metal minerals. As an implementation, geological surveys consist of field observations and laboratory analysis have been conducted to determine the chemical characteristics of mineralization occurring in the region. The Atomic Absorbtion Spectrometry method was chosen to determine the content of each element of base metal and precious metal contained in the rock in the region. From the analysis results it is known that there is a tendency of distribution of elementary metal elements and precious metal elements scattered in different areas. The Late Oligocene-Early Miocene Sintang Intrusive rocks are generally exposed in the northern part of the research area, in which by the chemical analysis contains more dominant elements which are associated with precious metals such as Cu and Au. While in the southern research area which is generally occupied by the Cretaceous Granodiorite Mensibau Intrusive Rocks based on chemical analysis, containing the elements associated with base metals such as Pb and Zn. This pattern shows that both types and age of different intrusive rocks bring different mineralized products.Keywords : base metal, precious metal, intrusive, mineralisation
GEOLOGI BAWAH PERMUKAAN KAITANNYA DENGAN POTENSI PELULUKAN / LIKUIFAKSI DI DAERAH ERETAN DAN LOSARANG, JAWA BARAT Lumbanbatu, U. M.; Hidayat, S.
Jurnal Geologi dan Sumberdaya Mineral Vol 21, No 2 (2011): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

The investigated area which belongs to the coastal plain is composed of Quaternary sediments such as soil, swamp, near shore, offshore and pre-Holocene sediments. Further more, near shore sediment can be divided into sand flat, mixed flat, mud flat and beach sand. In general those sediments are still loose and water saturated. Among beach sand, sand flat and mix flat have a high level of vulnerability to liquefied. Based on seismic data, an occurrence of earthquakes can be triggered by two earthquake sources namely subduction sources. An earthquake took place on August 8, 2007 at 04:58 known as Indramayu Earthquake is an example of eartquake triggered by subduction zone since the quake has a depth of 289.2 Km with a magnitude of M 7.5 on the Richter scale. From the geological aspect and seismicity point of view the investigated area is potential for experience liquefaction events. Based on the physical properties of the sand deposits and their stratigraphical position as well as other factors such as a thickness of sand layer, types of overlay and underlain sediments then a liquefaction susceptibility in this region can be divided into very low liquefaction susceptibility region, low liquefaction susceptibility region and high liquefaction susceptibility region.Keywords: quaternary, earthquakes, liquefaction, Inramayu
Geologi Gunung Padang dan Sekitarnya, Kabupaten Cianjur – Jawa Barat Bronto, Sutikno; Langi, Billy B.
Jurnal Geologi dan Sumberdaya Mineral Vol 17, No 1 (2016): Jurnal Geologi dan Sumberdaya Mineral
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Abstract

Permasalahan arkeologi Gunung Padang mengemuka apakah sebagai punden berundak di atas batuan bentukan alam atau seluruhnya merupakan bangunan sebuah piramida buatan manusia. Untuk membantu menyelesaikan persoalan itu dilakukan penelitian geologi di daerah Gunung Padang dan sekitarnya. Berhubung daerah ini tersusun oleh batuan gunung api, maka metoda penelitian di dasarkan pada pemahaman geologi gunung api purba dan sejarah geologinya lebih memperhatikan perkembangan volkanisme setempat. Daerah Gunung Padang dan sekitarnya merupakan  perbukitan berketinggian 800 – 1200 m dml., terletak pada perpotongan sesar Cimandiri (WNW – ENE) dengan sesar Gede-Cikondang (NNW – SSE). Batuan penyusun dibagi menjadi enam satuan, yakni Breksi gunung api, Argilik-kuarsa-pirit,  Silisifikasi-urat kuarsa-limonitik, Intrusi andesit gunung Padang, Intrusi andesit pasir Pogor, dan aluvium. Satuan pertama merupakan batuan sisa kerucut komposit Gunung api purba Karyamukti. Kedua satuan batuan ubahan hidrotermal tersebar di dalam fasies pusat dan mewakili batuan terobosan dangkal tua. Satuan intrusi andesit Gunung Padang merupakan hasil erupsi termuda, membentuk leher gunung api yang ke permukaan menjadi sumbat/kubah lava berstruktur kekar kolom. Di sebelah utara Gunung api purba Karyamukti diterobos oleh andesit Pasir Pogor. Sebagai akibat proses geologi endogen dan eksogen sangat lama kekar kolom Gunung Padang semakin lama semakin renggang akhirnya batu kolom roboh berserakan. Oleh manusia masa lalu batu kolom itu kemudian ditata sebagai punden berundak untuk upacara pemujaan, yang sekarang dinamakan Situs Megalitik Gunung Padang. Kata kunci: gunung padang, gunung api purba, karyamukti, kekar kolom
POLA ANOMALI MAGNET RESIDUAL DARI APLIKASI METODE TREND SURFACE ANALYSIS (TSA), HUBUNGANNYA DENGAN TATAAN GEOLOGI BAWAH DASAR LAUT DALAM PEMETAAN GEOLOGI KELAUTAN BERSISTEM DI PERAIRAN MANADO SULAWESI UTARA Ilhaude, D.; Nirwana, B.
Jurnal Geologi dan Sumberdaya Mineral Vol 20, No 4 (2010): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

Analysis of magnetic intensity using a TSA method shows a significant value of residual anomaly from the separation of total magnetic anomaly value. Contour of the residual anomaly resulted from the 2nd order value of regional anomaly is assumed to be correlated with the geological structures of southwest-northeast directions.Keyword: TSA method, residual anomaly
PERKEMBANGAN ELEMEN-ELEMEN PENTING TEKTONIK ASIA Sihombing, Torkis
Jurnal Geologi dan Sumberdaya Mineral Vol 15, No 2 (2014): Jurnal Geologi dan Sumberdaya Mineral
Publisher : Pusat Survei Geologi

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Abstract

Di wilayah Asia terdapat beberapa elemen tektonik penting yang berinteraksi, sehingga sangat menentukan evolusi tektonik kawasan ini. Lempeng-lempeng tersebut meliputi lempeng Indo-Australia di selatan, lempeng Eurasia di baratlaut, serta lempeng Laut Filipina di bagian timur. Lempeng benua India merupakan bagian dari lempeng utama Indo-Australia yang terdiri atas sub-kontinen India dan cekungan di bawah Samudera Hindia. Himalaya merupakan salah satu pegunungan termuda di bumi ini. Menurut teori tektonik lempeng, pembentukan pegunungan tersebut sebagai hasil dari tumbukan benua, atau orogeni, sepanjang batas konvergensi antara Lempeng Indo-Australia (Lempeng India) dengan Lempeng Eurasia. Sementara secara geologi, Plato Tibet tidak dapat dipisahkan dari Himalaya, karena wilayah ini menyatu, dan sama-sama terbentuk sebagai akibat tumbukan lempeng India dengan Asia / Eurasia.Kata kunci: lempeng Indo-Australia, lempeng Eurasia, lempeng Laut Filipina, tumbukan, orogeni
GEOLOGI ALUVIUM DAN KARAKTER ENDAPAN PANTAI/PEMATANG PANTAI DI LEMBAH KRUENG ACEH, ACEH BESAR (PROV. NAD) Moechtar, Herman; Subiyanto, Subiyanto; Sugianto, D.
Jurnal Geologi dan Sumberdaya Mineral Vol 19, No 4 (2009): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

The alluvium in the Krueng Aceh valley, suggests that it is deposited in floodbasin, fluvial system, transition, and linier clastic environments. The linier clastic enviroments consists of offshore (Fellp), nearshore (Fedp), beach/ beach-ridge (Fep/ Fepp), and marsh deposits. The research was carried out by surface geological mapping and analysed sedimentology and stratigraphy of ten boreholes trending west-east to southwest and west-east to south. Depths of the boreholes varies from 2.30 to 10 m at elevation of + 0.90 - + 10 m above sea level. Based on correlation of sedimentary environment in the linier clatic environment,sea level changes can be divided into three cycles that were controlled by active tectonic of the Seulimeum fault respectively. Keywords: sedimentology, stratigraphy, alluvium
KONTROL STRUKTUR PADA POLA “ZIG-ZAG” ALIRAN SUNGAI KAYAN DI DAERAH PESO, KALIMANTAN TIMUR Baharuddin, Baharuddin; Wahyudiono, Joko
Jurnal Geologi dan Sumberdaya Mineral Vol 17, No 3 (2007): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

Peso Area is situated at the downstream of Kayan River, East Kalimantan. The area is generally occupied by a flysch-type deposit of Cretaceous Rajang-Embaluh Group. The unit is unconformably overlain by the Tertiary Sediments and is intruded by the Tertiary-Quaternary magmatics. Based on interpretation of landsat imagery, lineament features which represent faults can be traced outside the studied area. Based on landsat imagery data and result of joints, fault and fold analyses, it can be concluded that the zig-zag pattern of the Kayan River at Peso area is closely related to major faults movements. These faults are generally trending NE- SW and NW-SE. Keywords : structural control, zig-zag patterns, Kayan River
PARAGENESA MINERAL BIJIH SULFIDA HIDROTERMAL DI DAERAH KLUWIH KABUPATEN PACITAN JAWA TIMUR : PENDEKATAN BERDASARKAN MINERALOGI DAN INKLUSI FLUIDA Sudarsono, Sudarsono; Setiawan, I.
Jurnal Geologi dan Sumberdaya Mineral Vol 22, No 1 (2012): Jurnal Sumber Daya Geologi
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Abstract

Hydrothermal activity in Kluwih, Tulakan Pacitan area East Java indicated by rock alteration zone, sulphide mineralization, and quatz vein NNE-SSW, NNW-SSE trend. Mineralization deposited at least in 6 stages, yaitu : 1st stage, pre mineralization deposited quatz (320°C), 2nd stage, deposited quartz + pyrite (290°C), 3rd stage, deposited quartz + pyrite + chalcopyrite + bornite ± galena ± sphalerite (260°C), 4th stage, deposited quartz + pyrite + cahalcopyrite + Tetrahedrite + bornite ± galena (220°C), 5th stage, deposited quartz + pyrite (200°C), and 6th stage or supergen stage, deposited secondary mineral (covellite, malachite, azurite) <100 °C. The hydrothermal system was able in Kluwih Pacitan and surrounding area interpreted as epithermal low suphidation system, or base metal horizon to precious metal horizon. Hydrothermal process initially by propilitic alteration and deposited of sulphides and quartz vein, then argilic alteration overprint both. Finally, surface erosion outcropted those deposits at surface.Key words : hydrothermal, mineralization, sulphide ore, Pacitan
COAL CHARACTERISTICS OF SAROLANGUN - PAUH REGION: Implication for Coalbed Methane potential Permana, Asep Kurnia
Jurnal Geologi dan Sumberdaya Mineral Vol 18, No 6 (2008): Jurnal Sumber Daya Geologi
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Abstract

The world energy crisis has effected the Indonesian energy supply, inspite of  Indonesia is rich in another potential geo- resources, such as Coalbed Methane (CBM), which can be used for solving this crisis. The geology and coal characteristics of the Muaraenim Formation in Sarolangun - Pauh region, suggest that the Coalbed methane resource in this area is prospective. Detailed organic geochemical and petrographical study, using fresh surface and subcrop samples of coal was conducted. Petrographically, the coal mainly consists of vitrinite group, and is essentially composed telovitrinite, telocolinite, and detrovitrinite, with rare to sparse inertinite, and minor exinite and mineral matter. A geochemical result indicates the range of volatile matter content is from 13.39% to 33.50%, total sulphur from 0.11 to 2.38%, ash between0.68% and 52.4%, and moisture 18.01 up to 40.18% , with vitrinite reflectance values ranges from 0.35% to 0.47% . Furthermore the feature of micro-cleats or micro-cracks from SEM analysis are dominated by strike lines although some curved and sub-curved lines are also present. Open microcleats are predominant compared to close microcleats. Based on Barbara and Winter diagram, coalbed methane content derived from the Sarolangun- Pauh coal seam is expected to be low - moderate level, with methane content is present from 2.89 m3/t to 6.02 m3/t. SBC coalfield area shows that gas content is around 338.001, 354.6234 scf, Lubuk Napal is 743.232.370, 6576 scf, whilst the Sungai Dingin about 419.343,508.7245 scf. Keywords : coal characteristics,  Sarolangun-Pauh  Region, coalbed methane (CBM).
IDENTIFIKASI ALUR SUNGAI PURBA DAN ENDAPAN PLASER DI PERAIRAN LEMBAR PETA 1612 KALIMANTAN SELATAN Arifin, Lukman
Jurnal Geologi dan Sumberdaya Mineral Vol 21, No 1 (2011): Jurnal Sumber Daya Geologi
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Abstract

Placer deposits is suggested to be within the paleo channels present in the study area. It can be identified from high resolution single channel seismic profiles. These paleo channels occurred within sequence D and marked by the presence of cut and fill characters on the seismic record. The placer were deposited during the activity of paleo channel in the regression period. Placer deposits are probably derived from igneous and metamorphic rocks of Mesozoic age found around the Meratus Mountain as the source of Recent placer deposits. The sediments composed of quartz and clay minerals such as kaolinite and montmorilonite.Keywords: placer, paleo channel, quartz, clay mineral, South Kalimantan

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