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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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Perubahan Biofasies Foraminifera pada Batugamping di Pantai Baron dan Serpeng, Provinsi D.I. Yogyakarta Patriani, Emma Yan; Rijani, Sonia; Sundari, Dessy
Jurnal Geologi dan Sumberdaya Mineral Vol 17, No 2 (2016): Jurnal Geologi dan Sumberdaya Mineral
Publisher : Pusat Survei Geologi

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Abstract

Batugamping di Lokasi Pantai Baron dan Serpeng merupakan bagian dari Batugamping Formasi Wonosari di Pegunungan Selatan, Provinsi Daerah Istimewa Yogyakarta yang terbentuk pada umur Miosen Awal – Miosen Tengah. Batugamping ini mengandung organisma khas yang menunjukkan keragaman biofasies yang terdiri dari kandungan foraminifera plangtonik, foraminifera bentonik kecil, foraminifera besar, ganggang, koral dan moluska yang memerlukan beberapa persyaratan ekologi tertentu untuk dapat tumbuh dan berkembang. Penelitian ini dilakukan untuk mengetahui perubahan biofasies foraminifera pada batugamping di Formasi Wonosari pada lokasi Pantai Baron dan Serpeng. Enambelas perconto batuan telah di analisis petrografi dan mikropaleontologi. Hasil analisis petrografi menunjukkan adanya dua kelompok fasies karbonat yang berhubungan dengan standar facies belt. Data analisis mikropaleontologi (tabel distribusi foraminifera) diolah menggunakan metoda analisis kluster. Hasil penelitian menunjukkan adanya dua biofasies. Pertama basin facies dengan taksa pencirinya adalah foraminifera plangtonik dan subordo Textulariina. Kedua foreslope facies dengan taksa pencirinya adalah Cycloclypeus dan Amphistegina. Fosil lainnya yang hadir yang bukan taksa penciri adalah Lepidocyclina, Miogypsina, dan Heterostegina. Perubahan biofasies foraminifera di lingkungan basin dan foreslope menunjukkan bahwa distribusi foraminifera sangat dipengaruhi oleh faktor paleoekologi, yaitu kedalaman, cahaya dan energi air. Paleoekologi dapat digunakan juga untuk membantu menentukan lingkungan pengendapan purba yang berguna untuk waduk hidrokarbon di batuan karbonat. 
Anomali Geomagnet; Kaitannya dengan Zone Mineralisasi di Daerah Malingping, Bayah dan Sekitarnya, Kabupaten Lebak, Propinsi Banten Simamora, W.H
Jurnal Geologi dan Sumberdaya Mineral Vol 16, No 5 (2006): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

Magnetic anomaly in the Malingping - Bayah and surrounding areas, ranging from -650 nT to +270 nT, can be divided into three groups. The first group is the low anomaly with a value range from -650 nT to -250 nT, the second group is middle anomaly with a value range from -250 nT to + 50 nT, and the third group is high anomaly with a value range from + 50 nT to +270 nT. Low anomaly zone is thought to be the effect of intrution of acid rocks which is located in 500 to 2000 m depth. This is supported by the existing of granodiorite intrusion of Cihara (Tomg) that also coincides with low anomaly zone. The granodiorite intrusion is thougt to have played an important role in sulfide, gold (Au), and silver (Ag) mineralization which is found in the Cikotok and Cirotan areas. Keywords : Geomagnetic anomalies, Malingping, granodiorite of Cihara 
DINAMIKA BENTANG ALAM DAN PENGARUHNYA TERHADAP ASPEK FISIK LAHAN DAERAH SOLOK –SINGKARAK, PROVINSI SUMATRA BARAT Santoso, Santoso; Lumbanatu, Ungkap M.
Jurnal Geologi dan Sumberdaya Mineral Vol 20, No 2 (2010): Jurnal Sumber Daya Geologi
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Abstract

The investigated area of Singkarak and surrounding areas belong to Median Graben at Sumatra Fault Zone. Danau Singkarak is one of the bigest lake in west Sumatra, it has a shape of elongate southeast to northwest in direction. Landform arround Danau Singkarak, are represented by Alluvial Fan (F5), River Terrace (F2), Eroded Structural Terrace (S1), Eroded Fault Scarp (S2), and Undulating Fault Hills (S3). Those landforms are known as tectonic origin (endogen). While far away form Danau Singkarak landforms are represented by exogen origin such as Karst Origin (K1, K2), Denudational Origin (D1, D2, D3) and Volcanic Origin (V2). The landforms on east and west side of Danau Singkarak have difference characteristics. On the east side of Danau Singkarak area landform are characterized by fault scarp which has a very steep slope included landslide, while on west side are characterized by aluvial fan with gently slope. Base on the physical character of tectonic landform, the tectonic activity become higher toward Danau Singkarak which is shown by the alluvial fan produced by Sawah Puding Fault (Karang Alluvial Fan, Airhilang Alluvial Fan, and SaningbakarAlluvial Fan) are being actively till present. This activities also characterized by the destructive earthquake occurrences. Non active alluvial fans distributed far away from Danau Singkarak shuch as the Padanglawas Alluvial Fan, Tanjung Sawah Alluvial Fan and Guguk Alluvial Fan. Those alluvial fans are produced by Air Mundak Fault.Keywards: Singkarak Lake, landform, active alluvial fan, non active alluvial fan, exogen, endogen activity.
DIAGENESIS BATUPASIR EOSEN DI CEKUNGAN KETUNGAU DAN MELAWI, KALIMANTAN BARAT Santy, Lauti Dwita
Jurnal Geologi dan Sumberdaya Mineral Vol 15, No 3 (2014): Jurnal Geologi dan Sumberdaya Mineral
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Abstract

Cekungan Tersier Ketungau dan Melawi terletak di Kalimantan Barat. Keduanya terpisahkan oleh Tinggian Semitau yang tersusun oleh batuan pra-Tersier. Batuan sedimen berumur Eosen di daerah ini adalah Formasi Kantu, Tutoop, dan Ketungau di Cekungan Ketungau, kemudian Formasi Ingar, Dangkan, dan Silat di Cekungan Melawi, serta Formasi Haloq di Tinggian Semitau. Hasil analisis petrografi dan scanning electron microskop (SEM), menunjukan bahwa tingkat diagenesis batupasir dari Formasi Ingar, Dangkan dan Silat termasuk tingkat mesogenetik matang B, dengan kedalaman timbunan 2700 – 4000m. Sedangkan batupasir dari Formasi Kantu, Tutoop, dan Ketungau di Cekungan Ketungau, termasuk ke dalam tingkat mesogenetik matang A dengan kedalaman timbunan 2000-2700m. Adapun Formasi Haloq di Tinggian Semitau dapat di klasifikasikan ke dalam mesogenetik agak matang (semimature), dengan kedalaman timbunan 1500-2000m. Perbedaan tersebut dikarenakan batupasir Kantu, Tutoop, Ketungau, dan Formasi Haloq pada kala Oligosen telah mengalami pengangkatan, sehingga formasi tersebut tidak ditindih oleh batuan sedimen Oligosen.  Sedangkan dalam umur yang sama selama Oligosen Formasi Ingar, Dangkan, dan Silat ditindih secara tidak selaras oleh Formasi Payak, Tebidah dan Sekayam dengan ketebalan total sekitar 3000 m.Kata Kunci : Batupasir, Melawi, Ketungau, diagenesis dan Eosen.
PENGARUH TEKTONIK PADA RUNTUNAN ENDAPAN ALUVIAL DEPRESI PADANGSIDEMPUAN, SUMATERA UTARA Lumbanbatu, Ungkap M; Basri, C; Hidayat, S.; Siregar, Darwin A
Jurnal Geologi dan Sumberdaya Mineral Vol 19, No 3 (2009): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

The investigated area, that is so called Padangsidempuan depression has been filled up by unconsolidated fluvial sediments. The sediments can be distinguished into five different environments, these are flood basin deposit, flood plain deposit, palaeo channel deposit, swamp deposit and colluvium deposit. To understand the influence of tectonic activities on lithological succession of the studied area several profiles were made. It reveals, that lithological successions have been disturbed by tectonic activities such as subsidence and uplifted. Subsidence can be identified by alternating of swamp facies deposit within different stratigraphic position and superimposed of the Batang Toru river on the palaeo channel deposit three (Ch-3). Further more the effect of uplifting caused palaeo channel deposit shifting horizontally. The data show that the tectonic activities in the studied area are not so very intensive. Keywords: quarternary tectonics, palaeo channels, pull-apart basin, sedimentary sequences
MIKROZONASI DAERAH KENDARI DAN SEKITARNYA BERDASARKAN RESPONS TANAH SETEMPAT Marjiyono, Marjiyono; Soehaimi, Asdani; H. Setiawan, J.
Jurnal Geologi dan Sumberdaya Mineral Vol 17, No 1 (2007): Jurnal Sumber Daya Geologi
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Abstract

As one of the provincial capital city which is growing  fast, database of earth sciences is absolutely required In order to develop the secure of Kendari town. Measurement   of microtremor   in this region aims  to know the site response forward ground shacking. The result of microtremor analysis indicates that the distribution of dominant period of H/V ratio of Kendari and its surrounding area is parallel to Kendari bay, and turning south to follow the pattern of Wanggu river. Susceptibility  level in this area which  is represented by dominant period values is divided  into four categories (> 1.5 seconds, 1.5  -1.0 seconds, 1.0- 0.5 seconds, and <0.5 second). Generally, the pronest area coinciding with recent sedimentation  area, is around  Kendari  Bay and along Wanggu river, while towards outside are it is safer. Keyword:microtremor, ground shacking, Kendari
LINGKUNGAN PENGENDAPAN FORMASI PEMBAWA BATUABARA WARUKIN DI DAERAH KANDANGAN DAN SEKITARNYA, KALIMANTAN SELATAN Heryanto, R; Panggabean, H
Jurnal Geologi dan Sumberdaya Mineral Vol 23, No 2 (2013): Jurnal Sumber Daya Geologi
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Abstract

Kandangan area belongs to the South Hulusungai the District, South Kalimantan Province. The Warukin Formation in this area is situated in the eastern margin of the Barito Basin. In this area, the basin is underlain by Pre-Tertiary rocks comprising an assortment of rocks of continental and oceanic crusts. The Barito Basin was filled by sedimentary rocks of the Tanjung, Berai, and Warukin Formations having an age of ranging from Eocene to Miocene which was then unconformably succeeded by the Plio-Pleistocene Dahor Formation. The Warukin Formation consists of grey- to blackish color of claystone, intercalated by sandstone and coal seams. The thickness of coal ranges from 0.5 to 12 meters. The coal is black, dull to dull banded, light, contains abundant of resins and showing a woody structure. The Warukin coal seam composed by macerals of vitrinite (59.4-86.6%), exinite or liptinite (0.8-9.5%), and inertinte (3.4-17.4%). Based on a triangle diagram of TFD facies shows that coal samples of the Warukin Formation categorized into a wet forest swamp or telmatic facies. Furthermore, the plotting Gelification Index (GI) versus Tissue Preservation Index (TPI) the coal seams of the Warukin Formation was deposited in the transgressive phase, at limnic facies, to lower delta plain facies.Keywords : coal, maceral, Warukin Formation, Kandangan, Barito Basin
KARAKTERISTIK MINERAL LEMPUNG PADA SEDIMEN RESEN PERMUKAAN DASAR LAUT DI PERAIRAN KOTA SEMARANG Budiono, K.; Panggabean, Hermes
Jurnal Geologi dan Sumberdaya Mineral Vol 18, No 4 (2008): Jurnal Sumber Daya Geologi
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Abstract

Clay mineral is a group of mineral which suplay more than 16% of sediments distribution in the earth surface. The clay mineral can be occurred both on the land and sea bottom. The clay mineral which is deposited in the coastal and sea bottom have a unique mechanism, and consequently creates many kind of clay mineral where this conditions is influenced by the deph, temperature, light, topography and organism.The study of clay mineral distribution in the coastal and  marine sediments enables to analysis the sedimentation processes, where the occurrence of this mineral is influenced by the origin of the sediments. Generally, the surficial sediments of Semarang offshore is consists of clay and silt.Based on the SEM analysis the clay mineral in Semarang offshore is dominated by caolinite, illite and mixed layer of montmorilonite and illite.Keywords: offshore surficial sediments, clay mineral, sedimentation process
Aplikasi Petrologi Organik Dalam Analisis Cekungan dan Eksplorasi Hidrokarbon pada Beberapa Cekungan di Indonesia dan Australia Permana, Asep Kurnia
Jurnal Geologi dan Sumberdaya Mineral Vol 18, No 3 (2017): Jurnal Geologi dan Sumberdaya Mineral
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Abstract

The organic petrology is useful in many aspects of geological applications. This method is mainly applied for geoscience investigation, such as basin analysis, fossil fuel resources exploration, and coal utilization. In the last few years, organic petrology has been applied in other fields such as environmental, archeology, and forensic studies. Study of organic petrology and its applications have also been applied in some Indonesian and Australian Basins. The organic petrography method was combined with other analytical techniques to get comprehensive results, for instance Scanning Electron Microscope (SEM), Palynology, Rock-Eval Pyrolysis, Gas Chromatography-Mass Spectrometry (GC-MS), X-Ray Diffraction (XRD), X-Ray Fluorescence (XRF), and Microfocus X-Ray Tomography. Combination of those analytical techniques have been widely used for identification and characterization of organic matter and mineral matter association, even more quantification as well as  assessment of the maturity level and rank of organic matter in the organic rich sediments. This paper provides a review of the organic petrology application in basin analysis and hydrocarbon exploration. This research is focused on application of Organic petrology for reconstruction of paleoenvironment, geological history, hydrocarbon source rocks, and unconventional hydrocarbon potential in some Indonesian and Australian Basins.  Keyword: organic petrology, basin analysis, hydrocarbon exploration 
Regolith Landform Unit Mapping using Hyperspectral Imaging (Case study: Block G TickHill Mt.Isa, Australia) Agustin, Fitriani
Jurnal Geologi dan Sumberdaya Mineral Vol 17, No 4 (2016): Jurnal Geologi dan Sumberdaya Mineral
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Abstract

The advent of new hyperspectral has improved the rapid surface mapping of minerals and earth materials. This research is creating the mineral maps using HyMap in Tick Hill Mount Isa Northwest Queensland as a guide for the regolith landform unit mapping.Tick Hill area is part of the Proterozoic Eastern and Western Fold Belt Province of Mt.Isa Inlier Complex. The areas were covered by Mesozoic and Paleozoic lithologies dominated by medium to coarse hornblende-biotite granite and gneiss intruded during 1760 – 1720Ma. Highly weathered landform covered the whole area. The Mesozoic sediments have experienced to deep weathering currently present in the form of mesas. The weathering profiles are dominated by kaolinite, smectite, and pedogenic carbonates with some secondary silicification. Part of the landform was covered by colluvium which varied in thickness from less than 1 meter to up to 12 meter in certain places.The general image processing for HyMap has been done for the area. In addition, ASD spectra laboratory has been applied to validate the remotely sensed mineral information. Iron Oxide and Al-OH (kaolinite, illite, smectite) mineral maps have been successfully created through HyMap imagery. Those can easily identified through the band ratio with some mask application (relative band depth method) in HyMap. For final process, GIS method is used to overlay all the data producing regolith landform unit map. AL-OH mainly kaolinite mineral map is showing the usefulness for identification the surface regolith mapping (mottle zone) and its crystallinity maps can differentiate transported and in situ regolith materials. In addition, Iron oxide map is able to identify ferruginous and laterite surface materials.Keywords: HyMap,Regolith,Mineral Mapping, TickHill,Mt.Isa

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