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Bulletin of Scientific Contribution : Geology
Published by Universitas Padjadjaran
ISSN : 16934873     EISSN : 2541514X     DOI : doi.org/10.24198/bsc%20geology.v18i1
Core Subject : Science, Social, Engineering,
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Environmental Science
BSC Geology adalah jurnal yang dikelola oleh Fakultas Teknik Geologi Universitas Padjadjaran,terbit 3 kali dalam setahun (April, Agustus, dan Desember), yang menerbitkan karya tulis ilmiah dalam bidang kebumian terutama yang berkaitan dengan geologi seperti : Petrologi Paleontologi Geomorfologi Stratigrafi Geologi Dinamik Geologi Lingkungan dan Hidrogeologi Geologi Teknik Geokimia Geofisika Sedimentologi. Setiap artikel yang akan diterbitkan adalah bersifat tanpa biaya (no processing charges dan no submission charges). Dewan redaksi dan penerbit tidak pernah meminta bayaran untuk penerbitan pada jurnal ini. Tujuan dari jurnal ini adalah untuk memperkaya pengetahuan dan informasi tentang ilmu kebumian dan dapat dimanfaatkan untuk kemaslahatan bersama.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Geologi
Articles 5 Documents
 1 
Search results for , issue "Vol 10, No 2 (2012): Bulletin of Scientific Contribution" : 5 Documents clear
THE FOSSIL ASSEMBLAGE FEATURES OF LIMESTONE AND CLASTIC SEDIMENTARY ROCK IN LULUT AREA, CILEUNGSI DISTRICT, BOGOR, WEST JAVA -, Vijaya Isnaniawardhani; -, Rusman Rinawan; -, Bambang Prianggoro
Bulletin of Scientific Contribution Vol 10, No 2 (2012): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2401.181 KB) | DOI: 10.24198/bsc.v10i2.8281

Abstract

The geological mapping for limestone and clastic sedimentary rock in Lulut area was conducted. The study area was composed of claystone, siltstone, sandstone and limestone intercalations of Jatiluhur Formation formed within neritic setting in Middle Miocene age. This section interfingers with rich coral and algae limestone of Klapanunggal Formation.Larger foraminifera (Milliolids, Nummulites spp., Amphistegina spp., Operculina spp., Cycloclypeous spp.), globigerinids, calcareous red and green algae, corals, Molllucs and Brachiopods shell fragments were recorded in biogenic limestone. The marine invertebrata fossil assemblages (Molluscs, Brachiopods) as well as shallow marine trace fossils (skolithos, cruziana) were recorded in calcareous claystone, siltstone, sandstone and bioclastic limestone. Planktic and small benthic foraminifera assemblages were found in fine clastic sedimentary rock.The identified larger foram, globigerinids, coral and calcareous algae assemblages associated with invertebrate shell fragments can be indicated age and environmental of limestone. Based on the fossil assemblages and morphology characteristics of the study area, the limestone was formed in back-reef zones (northern part, at Bagogog-Cilalay); reef-crest (central part, at Pasir Bali, Kutalingkung, Sibancana, Kuari D); and fore-reef zones (southern part, at Cileungsi, Ciseah). In the southern part, claystone interlaminations and intercalations are commonly recorded. The reef complex grew in Tertiary age within neritic zone.Some index planktic foraminifera (Globigerinoides primordius, Globigerinoides ruber, Globorotalia continousa, Globorotalia siakensis, Globorotalia mayeri, Hastigerina siphonifera and Orbulina suturalis) recorded in carbonaceous clastic sedimentary rock indicated that sedimentary rock of Jatiluhur sections deposited within Middle Miocene Zones N.9 to N.14. Benthic and planktic foraminifera assembalges in the sections indicated that the sediments were deposited in neritic setting. This is supported by the appearance invertebrate fossils and trace fossils.
INITIAL SURVEY OF IRON SAND, AT THE MALANG, PEJAGRAN & KEBURUHAN VILLAGES, NGOMBOL SUBDISTRICT, PURWOREJO REGENCY, CENTRAL JAVA PROVINCE -, Geni Dipatunggoro
Bulletin of Scientific Contribution Vol 10, No 2 (2012): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1528.186 KB) | DOI: 10.24198/bsc.v10i2.8282

Abstract

Initial Survey of iron sand Including geological mapping and shallow drilling (which only 10 meter penetration), this activity is a pilot project of PT. Karya Buana Abadi as the fander and trusted to geological engineering department survey team of Padjadjaran University Bandung and used Q Muria Swasindo flag as permission letter keeper from Purworejo Regency.Iron sand resources which fand in research area was rich, start from the surface of the soik to the bottom of shallow drilling, from its 50 Ha area there are 14 million ton deposit of iron sandwhich in the future wilk sold to Korea for industrial need.
KARAKTERISTIK GEOLOGI DAERAH GUNUNGAN LUMPUR CIUYAH -, Faizal Muhamadsyah; -, Edy Sunardi; -, Vijaya Isnaniawardhani
Bulletin of Scientific Contribution Vol 10, No 2 (2012): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2682.172 KB) | DOI: 10.24198/bsc.v10i2.8278

Abstract

The mud flow which identified in Ciuyah area is located in Ciniru village, District Ciniru, Kuningan regency, West Java. Study of morphometry through the deployment of slope classes have described the class as a concentric distribution with location of Ciuyah mud flow in the middle. Annular’s drainage pattern at the regional scale is reflected of the circular in the Ciniru area, at around of site Ciniru extrusion Ciuyah mud mound. Circular patterns of distribution shown by the slope zone, and annular flow patterns in the river a more regional scale is suggest updoming beneath the surface. Interpreted that the migration channel and the possible fluid circulation is controlled by faults that developed in the study area. Structural geology are factors that contribute to the release or migration of fluid to the surface, and provide an outlet for material and fluid under conditions of excessive stress, clayey material which forming of bedrock formations is elusiation experience process, and eventually formed mountains of mud intrusion on the surface
KAJIAN GEOTEKNIK TERHADAP FORMASI TANJUNG DI PIT SAYUNA, SATUI, KALIMANTAN SELATAN, DENGAN MENGGUNAKAN METODE SLOPE MASS RATING -, Geni Dipatunggoro; -, Zufialdi Zakaria
Bulletin of Scientific Contribution Vol 10, No 2 (2012): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1184.291 KB) | DOI: 10.24198/bsc.v10i2.8279

Abstract

Lithology of Tanjung Formation from the oldest to the youngest layers consists of siltstone, mudstone, dan carbonaceous mudstone or sandstone layers with four coal seams. Strike of joint varied N28ºE to N48ºE, N188ºE to N245ºE and N284ºE to N354ºE, and dip of joint varied 52º to 88º (very steep). Weathering conditions of rocks at the surface are moderately weathered (WM) to slightly weathered (WS) stage, and some of this surficial soils are at highly weathered (WH) stage as top soisl. In the bor holes these kinds of weathering stages (WM and WS) are characterized by both law core recovery dan RQD. Sedimentary rock of layer the joint to formed rock blok is discontinuity plane (bedding plane dan joint). The classification system is according to Rock Mass Rating (RMR) after Bieniawski, 1973 to determine the Slope Mass Rating (SMR) resulting maximum angle of cut slope of the rock mass in a stable condition. Rock Mass Rating (RMR) of penetrated rocks of the Tanjung Formation in Bore Hole No. AW-1, AW-2, and AW-3 range from 35 to 70, 40 to 50, and 29 to 60 respectively. The class numbers of the rock mass are II and III in general, suggesting that yhe rock masses are stable (class II) to partially stable (class III), but in Bore Hole AW-1 and AW-2 at the depth ranging from 39.45 to 45.30 meters and 04.75 to 27.84 meters (3 rock masses) respectively class IV occur characterizing the instable rock masses.
KELIMPAHAN POLEN DAN SPORA ENDAPAN CHANNEL DELTA MAHAKAM -, Winantris
Bulletin of Scientific Contribution Vol 10, No 2 (2012): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (494.966 KB) | DOI: 10.24198/bsc.v10i2.8280

Abstract

In the delta area there aretwo type of channelsnamely distributary channel and tidal channel. Both controlthe supply of sedimentforming thedelta. Channel is an open areaof vegetation.Channel justovergrown by plant water, but channel gets pollen and spore from the vegetation growing arround it. The aim of research is to know abundance of pollen and spore are deposted in the channel,to be usedas a guidedeposition environment and study provenance. The avarage pollen and spores in the sediment distributary channelat 47.73 grain per sampleincluded poor category and average pollen and spores in the tidal channel at 66.85 grain per sampleincluded in themoderately rich category. The abundance of pollen in the deposit of tidal channel is higher than deposit of distributary channel, while the abundance of fern sporeswere not significantly differentbetween the two channel.

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