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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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PENSESARAN MENDATAR DAN ZONA TUNJAMAN AKTIF DI SULAWESI: HUBUNGANNYA DENGAN KEGEMPAAN Koesnama, Koesnama
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 daerah Sulawesi, disamping dijumpai beberapa sesar regional aktif, juga dijumpai tunjaman aktif. Keberadaan tunjaman aktif ini dapat memicu terjadinya aktifitas pada sesar-sesar tersebut, sehingga menimbulkan gempa-bumi. Sesar-sesar aktif yang merupakan zone sumber gempa tersebut antara lain adalah Sesar Palu-Koro dan Sesar Walanae di Sulawesi bagian barat, Sesar Matano dan Sesar Lawanopo di Sulawesi bagian timur, serta Sesar Gorontalo di Sulawesi bagian utara. Secara keseluruhan sesar-sesar yang merupakan zone sumber gempabumi tersebut adalah sesar-sesar mendatar berskala besar.Kata kunci : sesar mendatar, tunjaman aktif, Sulawesi, kegempaan.
PENELITIAN PALEOMAGNETIK DAN GAYA BERAT KAITANNYA DENGAN PEMBENTUKAN FORMASI BATUAN DI SULAWESI SELATAN SERTA HUBUNGANNYA DENGAN SELAT MAKASAR DAN KALIMANTAN Panjaitan, Saultan
Jurnal Geologi dan Sumberdaya Mineral Vol 19, No 5 (2009): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

Rocks formed in South Sulawesi consist of: 1. Ultramaphic rocks of Triassic age having the polarity D= 268°, I= -45°, rotation anticlockwise 92°, and paleolatitude position -26.50°S. 2. The melange complexes of Cretaceous age having the polarity D= 330°, I= - 30°, rotation anticlockwise 30° and paleo lattitude position - 16.10°S. 3. Tonasa Formation of Middle Miocene-Early Eocene age having polarity D= 280°, I= -28°, rotation anticlockwise 80° and paleo latitude position -14.80°S. 4. Camba Formation of Middle-Late Miocene age having the polarity D= 279°, I= -24°, rotation anticlockwise 81° and paleo latitude position - 12.5°S 5. Limestones of Tacipi Member from Walanae Formation of Middle Miocene age, having polarity D= 280°, I= -9° rotation anticlockwise 80°, and paleo latitude position -4.5°S. 6. Sandstone of Walanae Formation of Pleistocene age and upper layer having the polarity D= 358°, I= -7°, very small rotation anticlockwise between 0° – 2° S and paleo latitude position -3.5°S. Gravity analysis , Paleomagnetism and GPS analysis indicate that rotation occured in South Sulawesi since Trias until now is anticlockwise. There for rifting concept in Makasar Strait at Recent diagram is less acceptable. Kalimantan and Sulawesi possible had ever closed as indicated from the movement of Kalimantan to the south since Late Trias at -17°S. At the same age Sulawesi moved northward to latitude -16.10°S. Then both islands were amalgamed and moved together northward with anticlockwise rotation between 50° to 92°. During the Trias age Kalimantan was derived from Asian Continent,while rock group in South Sulawesi at the same age were derived from south latitude and then moved together, by Australian continent movement. Keywords: rifting, paleomagnetic, anticlockwise, latitude, rotation, sea floor, strait.
INTERPRETASI POLA ANOMALI GAYA BERAT REGIONAL KAITANNYA TERHADAP POTENSI SUMBER DAYA GEOLOGI DI LENGAN SELATAN SULAWESI Subagio, Subagio; widijono, Bambang S.
Jurnal Geologi dan Sumberdaya Mineral Vol 22, No 1 (2012): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

The research area is part of Western Sulawesi Geological Terrain, arranged by pre-Tertiary to Quarternary rocks. The pre Tertiary rocks exposed in Latimojong Mountain located at northeastern research area and Maros Mountain near Bantimala district at southwestern area. The pre Tertiary rocks consist of metamorphic, and ultrabasic rocks overlain by flysch sediments. These flysch sediments overlain by Paleogen terrestrial sediments and carbonate rocks. The Oligosen - Early Miosen rocks exposed at Bone Mountains. These rocks consist of clastic and volcanic clastic sediments. The carbonate rocks have also been faund in that area. The Middle Miosen - Pliosen clastic sediments exposed along the valley in Graben Wallanae. The Quarternary sediments is distributed in Wallanae River. Regional gravity anomalies indicate the main lineaments geological structure that developed in the study area. The lineaments are north-south, northwest-southeast, and north northwest-south southeast directions. Wallanae fault is indicated by north-south direction indicating parallel contours anomaly that separate high anomaly in the west and low anomaly in the east of Wallanae Fault. The high anomaly pattern indicates the occurrance of ultramafic basement rock with having a mass density 2.9 gr/cc, while low anomaly indicates the occurrence of metamorphic basement rock with having mass density 2,8 gr/cc. The undulation of residual anomaly reflects the straightness of shallow geological structures. The geological resources of the region area are hydrocarbon, coal, and metallic minerals. This hydrocarbon probably present in the low anomaly, coal in the marginal basinal anomaly, while metallic mineral is found at high anomaly area.Key words : Lineament, anomalies, basement rocks, geological resources, Sulawesi
IDENTIFIKASI PERKIRAAN BATUAN ASAL SEDIMEN LEMPUNG PADA PERMUKAAN DASAR LAUT PERAIRAN INDRAMAYU BERDASARKAN PENDEKATAN ANALISIS GEOKIMIA DAN INDEKS PROPERTIS Budiono, Kris
Jurnal Geologi dan Sumberdaya Mineral Vol 18, No 6 (2008): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

The bottom sea surface sediments of Indramayu water is characterized by differences of type and distribution of these sediments.The geochemistry and index properties tests give the information about the natural condition of water content and the other physics and chemical properties of sediments. The empirical relation have been developed between index properties and general properties for land soil or sediments. Most of that empirical relationship can be applied for marine surficial sediments, because in general the terrigenous sediments that similar  with the sediments which was transported from land or coastal zone to the bottom sea. The result of geochemistry and index properties test shows that the characteristics of sediments in Indramayu sea water appear to be difference from one sample to the another sample. This condition is probably caused by the difference of distribution of clay minerals or the rock origin of sediments .Key word : Geochemistry and Index properties, clay sediments, sea bottom surface sediments.
PERHITUNGAN VOLUME HIDROKARBON BERDASARKAN DATA GEOKIMIA PADA LAPISAN SERPIH FORMASI SINAMAR, SUMATRA Zajuli, M. H. Hermiyanto
Jurnal Geologi dan Sumberdaya Mineral Vol 21, No 1 (2011): Jurnal Sumber Daya Geologi
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Abstract

Research area located at northwestern part of South Sumatra Basin, occupies 8% of the  total distribution of Sinamar Formation. The Oligocene Sinamar Formation consists of shale, claystone, mudstone, sandstone, conglomeratic sandstone, and intercalation of coal seams. This research was focused on fine clastic sediments of the Sinamar Formation, such as shale, claystone, and mudstone. Based on the analysis results of source rock richness and maturity, shale of the Sinamar Formation has a good to excellent degree of richness (2% - 10%) as a source rock. The shale of Sinamar Formation tends  to produce oil derived from type I kerogen (HI > 600 mg HC/TOC). If the shale of Sinamar Formation has an adequate maturity it will produce oil around 5.02 million barrels, while from the total shale of Sinamar Formation approximately 6.08 billion barrels.Keywords : Sinamar Formation, TOC, HI, kerogen type, Rock-Eval pirolysis, hydrocarbon
̀̀Sedimentologi Batugamping Formasi Berai di Gunung Talikurdan Sekitarnya, Kabupaten Tapin, Kalimantan Selatan Berdasarkan Data Petrografi Maryanto, Sigit
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 Formasi Berai yang berumur Miosen tersingkap di Gunung Talikur dan sekitarnya, Kabupaten Tapin, Provinsi Kalimantan Selatan. Hingga saat ini masih sedikit publikasi ilmiah tentang Formasi Berai yang membahas aspek sedimentologi secara rinci. Tujuan penelitian ini adalah untuk mengetahui perkembangan lingkungan pengendapan batuan. Pengujian petrografi terhadap tigapuluh dua sampel batugamping memperlihatkan fasies batugamping, yang meliputi wackestone, packstone, grainstone, dan boundstone. Batugamping Formasi Berai ini terendapkan dengan keadaan genanglaut, meliputi beberapa lingkungan, yaitu: lerengan lokal terumbu belakang, tepi landaian atau lerengan pada paparan tertampi, sayap terumbu, dan bangunan terumbu organik.
The Age And Paleoenvironment of The Pakaurangi Formation, Waitakere Group, Northland, New Zealand, Based on Ostracoda Hasibuan, Fauzie; Hasibuan, A.R; Sudijono, Sudijono
Jurnal Geologi dan Sumberdaya Mineral Vol 16, No 5 (2006): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

The Early Miocene Pakaurangi Formation, Waitakere Group, have a high diversity of Ostracoda. Key species include Loxoconcha propunctata, Bradleya semiarata, Bradleya lactea pakaurangia, Hemycythere tarakohensis and Bairdia canterburyensis, and indicate an Altonian age, completely in agreement with foraminiferal ages from this area by other workers.The species Trachyleberis zeacristata Hornibrook is transferred to Henryhowella. Paijenborchella iocosa Kingma, and many generic level taxa were also found in a borehole in Bojonegoro, East Jawa, Indonesia. The previously recorded Clifdenian to Waitotaran range of Henryhowella probesioides Hornibrook is extended downwards into the Altonian. The Ostracoda also show the paleoenvironment of the Pakaurangi Formation to be littoral to neritic, which is also in agreement with the evidence of foraminifera and molluscs as reported by previous workers. Keywords: Ostracoda, Pakaurangi Formation, Waitakere Group, Altonian, New Zealand
CHARACTERISTICS OF THE ARAI GRANITE ASSOCIATED WITH THE IRON ORE AND Zn-Cu-Pb DEPOSITS IN MUSI RAWAS REGENCY, SOUTH SUMATERA Abidin, Hamdan Zainal
Jurnal Geologi dan Sumberdaya Mineral Vol 20, No 3 (2010): Jurnal Sumber Daya Geologi
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Abstract

The Arai Granite exposed in the Jangkat District, Musi Rawas Regency, South Sumatra. This rock which is in the form of a stock, is assigned to be Cretaceous in age. Petrographical identification shows that this rock is dominated by quartz, feldspar (plagioclase and orthoclase), biotite with minor hornblende, pyroxene and secondary muscovite of holocrystalline- equigranular textures. On the basis of A/CNK ratio (<1.1), the Arai granite belongs to metaluminous type of calc-alkali composition (K2O/Na2O = 0.9-1.06). The Plot of trace elements indicates that this rock belongs to I-type and falls within VAG/SYNCOLG. This granite is intimately associated with subduction of Indian Ocean and Eurasian Plates. It is characterized by strong depletion of Nb, P and Ti significantly. The Arai granite intrudes the Rawas and Peneta Formations of older ages so that lithology of both formations experienced contact metamorphism (marble and hornfels) and mineralization. The presence of iron ore, Zn-Cu-Pb and gold deposits is closely associated with limestone replacement within those formations. Therefore, these deposits are classified into skarn style.Keywords: Arai granite, pluton, Rawas Formation, Peneta Formation, mineralisation, skarn
KANDUNGAN RARE EARTH ELEMENTS DALAM TAILING TAMBANG TIMAH DI PULAU SINGKEP Irzon, Ronaldo; Sendjadja, Purnama; Kurnia, Kurnia; Imtihanah, Imtihanah; Soebandrio, Joko
Jurnal Geologi dan Sumberdaya Mineral Vol 15, No 3 (2014): Jurnal Geologi dan Sumberdaya Mineral
Publisher : Pusat Survei Geologi

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Abstract

Wilayah yang berada pada jalur timah seperti Pulau Bangka, Pulau Belitung, dan Pulau Singkep sangat berpotensi mengandung REE. Kehidupan ekonomi Pulau Singkep dan sekitarnya pernah tergairahkan dengan adanya kegiatan pertambangan timah di sana. Akibat restrukturisasi PT Timah dan beberapa faktor lain, kegiatan pertambangan timah di Pulau Singkep ditutup dan meninggalkan banyak lokasi bahan sisa (tailing) maupun 'kolong' sebagai sisa kegiatan eksploitasi. Potensi yang belum terperhatikan mengenai sisa bahan sisa (tailing) tersebut adalah kandungan REE-ya. Ternyata, kadar REE pada konsentrat bahan sisa (tailing) sangat berlimpah (hingga 5800 ppm) dan pada bahan sisa (tailing) itu sendiri pun cukup tinggi (123-368 ppm). Studi serupa dapat diterapkan pada wilayah lain dengan keterdapatan bahan sisa (tailing) dan jenis tambang berbeda.Kata kunci: tailing, konsentrat, REE, tambang timah, Pulau Singkep
MEDAN GAYA BERAT PADA BATUAN OFIOLIT (ULTRAMAFIK) DI BEOGA, PAPUA DAN IMPLIKASI TERHADAP GENESIS ALIH TEMPATNYA Setyanta, Budi; Widijono, Bambang Suci
Jurnal Geologi dan Sumberdaya Mineral Vol 19, No 3 (2009): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

In Beoga, Puncak Jaya, Papua, a group of ultramafic rocks consisting of piroxenite, dunite, serpentenite and peridotite are exposed. The distribution of these rocks are very large, lying alongside east - west direction, reaching 50 km and 100 km long. The gravity fields in this region exhibit an elliptic gravity anomaly pattern ranging from -25 to 160 mGals. The gravity modelling and geological analysis suggest that ophiolite has been fragmented and exposed due to obduction, caused by an interaction between Pacific oceanic and Australian granitic plates. This tectonic setting may cause Mulia and its surrounding area to be susceptible to geological hazards such as earthquake and landslides. Keywords : gravity potentials, ophiolite, genesis, geology potential

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