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Sekretariat Redaksi Jurnal Geologi dan Sumberdaya Mineral Pusat Survei Geologi, Badan Geologi, Gedung A, Lantai 1 Jalan Diponegoro No. 57, Bandung, Indonesia
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Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources)
Published by Pusat Survei Geologi
ISSN : 08539634     EISSN : 25494759     DOI : https://doi.org/10.33332
Core Subject : Science,
Chemistry Earth & Planetary Sciences Energy
The JGSM acts as a publication media of high quality scientific investigations resulted from various geological scientific issues. Published articles covers Geo-sciences, Geo-resources, Geo-hazards, and Geo-environments. Geo-sciences are basic earth sciences in geology, geophysics, and geochemistry. Geo-resources are applied earth sciences scoping in geological resources. Geo-hazards are applied earth sciences concerning in geological hazards. Geo-environments are applied earth sciences focusing in environmental geology.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Geologi
Articles 482 Documents
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KECEPATAN PERGERAKAN MAGMA DASIT KE PERMUKAAN DI DAERAH PURWOREJO DAN SEKITARNYA, JAWA TENGAH Berdasarkan Analisis Penarikhan Jejak Belah Sam Permanadewi; I. Saefudin; D. A.Siregar
Jurnal Geologi dan Sumberdaya Mineral Vol. 18 No. 4 (2008): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v18i4.245

Abstract

Zircon fission track dating using zirkon of four dacite samples from Purworejo, yielded age of 12,6 ± 1,5 to 15,9 ± 1,0 m.a. One cooling phase of the dacite body at Purworejo area indicates an uplift velocity of 0.02 - 0.06 mm / year. Keywords : fission tracks, zircon, uplift, Purworejo
KARAKTERISTIK MINERAL LEMPUNG PADA SEDIMEN RESEN PERMUKAAN DASAR LAUT DI PERAIRAN KOTA SEMARANG K. Budiono; Hermes Panggabean
Jurnal Geologi dan Sumberdaya Mineral Vol. 18 No. 4 (2008): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v18i4.246

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
Pb-Zn-Ag DEPOSITS AT TANJUNG BALIT, LIMAPULUH KOTA REGENCY, WEST SUMATERA Hamdan Z.Abidin
Jurnal Geologi dan Sumberdaya Mineral Vol. 18 No. 4 (2008): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v18i4.247

Abstract

A Pb-Zn-Ag deposit located at Tanjung Balit, Limapuluh Kota Regency, West Sumatra, is hosted within the meta sedimentary rocks of the Tapanuli Group. The lithology consists of interbedded shale, meta sandstone, slate and phyllite (Kuantan Formation). The deposit is in the form of veins, veinlets and disseminated. The thickness of veins ranges from few centimeters up to 5 meters.  In places, some ore bodies are conformable with the host rocks. The main ores are lead, sphalerite, chalcopyrite, pyrite and silver with minor marcasite, magnetite, chalcosite and gold. Hydrothermal mineral assemblages consist of silica, illite, monmorillonite, pyrophyllite, muscovite, siderite, diaspore, dickite, magnesite, chlorite, carbonate, rhodochrosite, analcime, alunite, smectite, ankerite, calcite, dolomite, sericite and zeolite. Fluid inclusion measurements of secondary inclusions within quartz veins indicate that the homogenization temperature (Th) ranges from 185 - 350ºC. The presence of alunite, higher content of base metals as well as higher temperature range of the secondary fluids suggests that the deposit may characterize a high suphidation epithermal type. Keywords : Tanjung Balit, Tapanuli Group, fluid inclusion,  high sulphidation epithermal
POLA CEKUNGAN DAN STRUKTUR BAWAH PERMUKAAN DITINJAU DARI HASIL ANALISIS GAYA BERAT DAN MAGNET DI DAERAH BANJARNEGARA, JAWA TENGAH BAGIAN SELATAN Simon Hutubessy
Jurnal Geologi dan Sumberdaya Mineral Vol. 18 No. 4 (2008): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v18i4.248

Abstract

Density of rocks of 2.85 gr/cm3   and magnet susceptibility of K=0.00023 e.m.u are interpreted as pre-tertiary basement, assumed to be transformed granite rocks. This basement underlies densities of rocks and magnet susceptibilities as follows: 2.74 gr/cm3  and K=0.000036 e.m.u, 2.66 gr/cm3   and 0.0 e.m.u, 2.43 gr/cm3   and K=0.03230 e.m.u, and 2.42 gr/cm3 and K=0.01458 e.m.u, interpreted as Tertiary sediment rocks around 1.5 to 6 km in thick, and Quarter sediment rocks such as: Jempangan volcanic rocks (Qjo), members of Ligung Formation Clay (Qtlc), members of Ligung Formation braccia (QTlb), terrace deposit (Qt), and alluvium (Qa). These basement and sediment rocks are intruded by density of rocks and magnet susceptibility; 2.84 gr/cm3   and K=0.00033 e.m.u, interpreted as igneous diorite rocks, as seen at C-D section and many are revealed in the researched area.Basins in the researched area are generally in direction of southwest-northeast, southeast-northwest, and also west- east due to a normal fault occurring in the researched area.The structure of strike slip  fault occurring in this area is generally in the directions of nearly north-south, southeast- northwest, and esat-west. Thrust faults in this area exist to the northwest of Banjarnegara, of southeast-northwest direction, with movement direction to the south. Thrust faults also exist to the south of the fault direction generally west- eats, and have movement direction to the north.Keywords: basement, Serayu valley, basin pattern, underground structure, Banjarnegara
THE PROVENANCE AND DIAGENESIS OF SANDSTONES OF THE EOCENE TANJUNG FORMATION IN THE KUALAKURUN AREA, CENTRAL KALIMANTAN Rachmat Heryanto; Untung Margono
Jurnal Geologi dan Sumberdaya Mineral Vol. 18 No. 5 (2008): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v18i5.249

Abstract

Kualakurun area is located in the western margin of Tertiary Barito Basin. The basin was filled by the Eocene Tanjung Formation consisting of conglomerate and sandstone in the lowerpart, mudstone within tercalated by coal seams in the middle part, and sandstones in the upper part. The sandstones consist of subarkose, sub litharenite, and felspathi clitharenite. The framework grains dominantly consist of quartz with some lithic and feldspar fragments.The accessory minerals are muscovite and opaque minerals. The provenance of sandstone fragments of theTanjung Formation were derived from Continental Block (Craton Interior) and Recycled Orogen (Quartzose Recycled), which mostprobably were derived from the pre-Tertiary rocks of the Schwaner Mountains (Cretaceous granites and tonalities intruding Silurian-Permian metamorphic rocks) in the west of the Kualakurun area. Diagenetic processes identified in the sandstones are compaction, mineral authigenic and secondary porosity formations. The diagenesis regimeis categorizedas “mesogenesis mature A”, that is equal to mudrocks tageII, having apaleo-temperature of 80°upto95°C,and the burial depth ranging from2to3 kilometers. Keyword: provenance, sandstone, diagenesis, Tanjung Formation, Kualakurun
PROSES PENDANGKALAN DI PANTAI DAN LEPAS PANTAI CIREBON AKIBAT LAJU SEDIMENTASI ASAL DARATAN YANG TINGGI D. Setyadi; Noor C.D Aryanto
Jurnal Geologi dan Sumberdaya Mineral Vol. 18 No. 5 (2008): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v18i5.250

Abstract

The litology of Cirebon coastal area is alluvium from the Quarternary sediment. The emerged land in Cirebon coastal area is very wide due to a very flat coastal morphology and very high sedimentary in flux, especially in the river mouth area. The bat imetric map at Cirebon waters shows that the shallow water is in Kalijaga river mouth. Sediments are thicker towards Kalijaga and Sukalila river mouths. Further more, the sediment was deposited offshore and to the planning harboursites. Ingeneral, fluvial current is more dominant than longshore and marine currents and it is responsible for sedimentation along the coastalline and the river mouth. Keywords: emergedland, sedimentary influx, Cirebon waters
BIJIH BESI DI DAERAH BONTOCANI KABUPATEN BONE SULAWESI-SELATAN Harry Utoyo
Jurnal Geologi dan Sumberdaya Mineral Vol. 18 No. 5 (2008): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v18i5.251

Abstract

The iron ore located at Bontocani, Bone Regency, South Sulawesi is found in the form of boulders. The iron ore is associated with intrusions of granodiorite, pegmatite granodiorite and quartz as a result of moving up magmatic liquid containing iron ore, then it is enriched by the magmatic liquid remains that form granodiorite known as hydrothermal liquid through the cracks.  Sometimes, the iron ore is an aggregate at the contact zone between granodiorite intrusive and limestone. Mineral association occurred among garnet, quartz and ore mineral of magnetite and hematite, then mineralization in the research area is assumed as skarn type.Prospective area located at Tanjung village, in the south part of research area is 187.5 ha accompanied by magnetite mineralization and the degree of Fetotal   = 61,98 %, and at Pake village (220.78 ha) located at the north part and dominated by hematite mineralization with Fetotal = 52,35 %. Keywords: iron ore prospecting, granodiorite,  pegmatite granodiorite,  prospective area
STUDI GEOMORFOLOGI UNTUK KELAYAKAN TEKNIS JALAN RUAS KANDANGAN- BAGANDAH KALIMANTAN SELATAN Soemantri Poedjoprajitno
Jurnal Geologi dan Sumberdaya Mineral Vol. 18 No. 5 (2008): Jurnal Sumber Daya Geologi
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v18i5.252

Abstract

Kandangan-Bagandah road is the shorthest road alternative, which connects many town in South Kalimantan with the sea port of Batulicin, South Kalimantan.The road crossing a steep slope terrain and the very thick weathered soil has caused this road segment have the high susceptibility of mass movement.Geomorphological problems causing the road damage relate to the condition of landform such as: slope, degree of land density, peat or clay zone. Based on the physical aspect, the problems occurr as: mass movement soil creep, rock fall, development of valley (lateral erosion, backward erosion) and subsidence.Keywords: landform, lineament, sloping, mass movement, roadway
KAJIAN PENGARUH GEMPA BUMI MERUSAK DI WILAYAH PROVINSI BENGKULU TERHADAP PLTA MUSI Asdani Soehaimi
Jurnal Geologi dan Sumberdaya Mineral Vol. 18 No. 5 (2008): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v18i5.253

Abstract

The PLTA Musi is located in a pull apart basin between Ketahun and Musi - Keruh segments of Sumatera fault zone. The geotechnical subsurface of PLTA Musi is divided into four layers involving basement rock layer 1 with N = 1000, Vs =646 m/second; basement rock layer 2 with N = 500, Vs =521 m/second, and thickness h= 12 - 16 m; soft rock layer 1 with N = 200 and Vs = 392 m/second, thicknes h = 6 - 14 m, soft rock layer 2 with N = 100, Vs = 316 m/second, and thickness  h = 10 - 26 m. The natural period (Ts) between based rock layer 1  and 2 is 0,092 second ≤Ts≤ 0,099 second, for based rock layer  2 and soft rock layer 1is  0,06 second ≤ Ts ≤ 0,1 second, and soft rock layer 1 and 2 is0,12 second ≤ Ts ≤ 0,26 second. The 1979 and 1997 Kepahyang destructive earthquakes have significant influences to  the  PLTA  Musi  with  maximum  ground  accelaration  133,59  gal  and  equivalent  intensity  VII MMI or  VII MSK.Destructive earthquakes of magnitude Ms = 5 will occur at PLTA Musi at recurrent time of 10 years and earthquake of magnitude Ms = 6, Ms = 7 and Ms = 8 at 40 years, 160 years and 630 years.Keywords: The Musi PLTA,destructive earthquake, earthquake hazard and risk 
FORMASI MAUBISSE DAN AILEU DI BAGIAN BARAT TIMOR LESTE DALAM KERANGKA TEKTONOSTRATIGRAFI PULAU TIMOR Syaiful Bachri
Jurnal Geologi dan Sumberdaya Mineral Vol. 18 No. 5 (2008): Jurnal Sumber Daya Geologi
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v18i5.254

Abstract

The stratigraphic position of the Maubisse and Aileu Formations in Timor remains controversial despite the latest studies, which tend to place them within the para-autochthonous sequence. Field evidence indicates that the two formations have  transitional relationships with the overlying para-autochthonous Wailuli Formation. Paleontological evidence also indicates that the Maubisse Formation was derived from the Australian continent, and the stratigraphically related Aileu Formation was located on the northwest flank of Australia until the Neogene arc- continent collision event. Keywords: Maubisse Formation, Aileu Formation,Wailuli Formation, tectonostratigraphy, para-autochthonous sequence. 

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