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Berita Sedimentologi

FOSI
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Published by Forum Sedimentologiwan Indonesia

ISSN : 08539413 EISSN : 2807274X DOI : https://doi.org/10.51835/bsed

Core Subject : Science,

Earth & Planetary Sciences

BERITA SEDIMENTOLOGI aims to disseminate knowledge on the field of sedimentary geology to its readers. The journal welcomes contributions in the form of original research articles, review articles, short communications and discussions and replies. Occasionally, Berita Sedimentologi also includes field trip reports and book reviews, which are published only after going through peer-review processes. The main geographical areas of interest are Indonesia and SE Asia, however contribution from the rest of the world is also welcome. Berita Sedimentologi covers broad topics within sedimentary geology, particularly on depositional processes and their records in the rocks, petrology, sedimentology and stratigraphy of both siliciclastic and carbonate rocks; sequence stratigraphy, paleontology, biostratigraphy and sedimentary geochemistry. The journal also accepts articles on interdisciplinary research in sedimentary basin analysis, including large-scale basin geodynamics processes, mechanism of sedimentary basin formation, earth surface processes, sediment routing systems, petroleum geoscience and applied sedimentary geology analysis for mining and engineering geology.

Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Geologi

Articles 282 Documents

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Geological stories from the journey of mollusks fossils in Java Aswan Aswan
Berita Sedimentologi Vol 47, No 3 (2021)
Publisher : Ikatan Ahli Geologi Indonesia

The journey began in the Eocene with the presence of mollusk fossil in the Nanggulan Formation (near Yogyakarta) in Central Java. Many experts believe this was the early part of the Tethys system which might still be connected to the Tethys system in Europe.The oldest mollusk fossils type locality after Nanggulan is the Early Miocene Jonggrangan Formation in Kulon Progo near the city of Yogyakarta, which is dominated by the gastropod Haustator specimen. Molluscan paleontological studies of this type of locality reflect a restricted environment with less influence of the Tethyan system. Haustator are considered as the ancestor of the Turritellidae group, which is found mostly on Java Island, during the younger Tertiary to Quaternary Periods.The story continued to the Middle Miocene where the Tethyan realms indication was clearly observed by the presence of some typical Tethys species such as Volema and Babylonia from Nyalindung Formation, West Java. The regional sea level rise in this epoch (around 12 Ma) that was indicated by the presence of Vicarya as an index fossil, which occurrence was due to land submerging to become mangroves area. The fossil then quickly become extinct when the sea level dropped back.Late Miocene to Pliocene was like the transition period from the Tethyan realm to the Pacific realm, where the Tethyan fauna was no longer present. Only evolutional traces of the Middle Miocene mollusk fossils were observed. This continuous evolution is most clearly seen in Turritella cramatensis (late Miocene), Turritella acuticarinata (early Pliocene) and Turritella cikumpaiensis (late Pliocene) which was interpreted to have originated from Turritella angulata as their ancestors.Earth cooling environment that happened in the late Pliocene/early Pleistocene has led the diversity and evolution of a new group of mollusks, most clearly observed from the abundance of Turritella bantamensis in the Bojong Formation, Banten. The new Turritella group has a curved whorl that different from its predecessor with an angled whorl shape.Plio-Pleistocene tectonics event has ended the period of Java marine mollusks domination, then only freshwater mollusk fossils can be found in almost all Quaternary mollusks-bearing deposits.

Hydrocarbon Retention in Clastic Reservoirs of NW Borneo - Examples of Hydrocarbon Trap, Reservoir, Seal and Implications on Hydrocarbon Column Length Franz L. Kessler; John Jong
Berita Sedimentologi Vol 40, No 1 (2018)
Publisher : Ikatan Ahli Geologi Indonesia

Several siliciclastic fault-trap settings of the NW Borneo margin, from the West Baram Delta covering offshore Sarawak and Brunei to offshore NW Sabah, are compared with each other to assess the intricate relationship between hydrocarbon retention, seal capacity and reservoir parameters. Hydrocarbon column length is found to be a derivative of several parameters potentially affecting the integrity of a hydrocarbon trap. The presence of an effective and laterally continuous top seal is perhaps the most important success parameter; though relatively thin top seal can be surprisingly efficient. Seal capacity is featured by parameters such as mineralogy, grain size, contiguity, diagenesis and lateral continuity. Contiguity of hydrocarbon reservoirs is also important as discontinuous reservoir bodies commonly lead to very short and variable columns. The overall sand-to-shale ratio governs to some extent clay gouging capacity, with hydrocarbon columns tending to be longer in overall clay-prone environments, such as those found in outer shelf and deepwater turbidite environments. In these depositional settings, P50 columns are in the order of 250 m because sand-to-clay juxtaposition is more likely in fault-controlled traps. A better fault seal is often realized due to good shale gouge. However, hydrocarbon columns tend to be short (P50 of around 30 m) in sand rich shallow marine to deltaic settings given the discontinuity of reservoirs, leaky top seal, abundant yet discontinuous reservoir sand bodies and poor fault sealing capability. It is also observed that there are patterns of parameters such as sealing, reservoir, pressure and drive that have been identified, and combinations that appear viable (probabilistic success patterns) and non-viable for hydrocarbon retention (probabilistic failure patterns). The authors thus suggest to develop plausible patterns/scenarios and apply probabilistic simulations to each of the various combinations to assess the likely outcomes for column length predictions.

Sediment-Hosted Lead-Zinc Deposits: The Existence in Indonesia S. Digdowirogo; S. Prihatmoko; H. Lubis
Berita Sedimentologi Vol 14, No 1 (2000)
Publisher : Ikatan Ahli Geologi Indonesia

The best known Pb-Zn-(Au-Ag) deposits and occurrences in Indonesia such as Gunung Limbung-West Java, Tanjung Balit-Riau and Paleleh-North Sulawesi are believed to be epigenetic or intrusive-related and chiefly hosted by volcanic and intrusives. None of them is of economic interest, and this deposit type makes an insignificant contribution to the world Pb-Zn reserves. By contrast, the sediment-hosted Pb-Zn-Ag deposits play an important role as they contribute more than two third of world Pb-Zn reserves.Sedex, which is one class of the sedimen-hosted Pb-Zn-Ag deposits, has recently been identified in the Herald Resources Ltd - PT Aneka Tambang Persero (Tbk) joint venture area, in the Sopokomil prospect, Dairi, North Sumatra during a drilling campaign. The sediment-hosted Pb-Zn deposit has actually been defined in Kelapa Kambit, Belitung.

Bali–Lombok Gap: A Distinct Geo-Biologic Border of the Wallace Line Satyana, Awang H.
Berita Sedimentologi Vol 25, No 1 (2012)
Publisher : Ikatan Ahli Geologi Indonesia

The "Wallace Line", a line that divides faunal distribution, came into being in 1863 and was named after Alfred Russell Wallace, the great English naturalist travelling the "Malay archipelago‟ or the Indonesian islands from 1854-1862. The Wallace Line separates the Oriental (Asian) fauna to the west from the Australasian fauna to the east. The original Wallace Line ran between Bali and Lombok, extending northward between Borneo/Kalimantan and Sulawesi, and between the Philippines and Indonesia. The Asian animal community includes such mammals as rhinoceroses, orang-utans, tapirs, tigers, and elephants. Animals related to Australian fauna include birds such as cockatoos, birds of paradise, marsupials and cuscuses.

University: An Announcement Berita Sedimentologi
Berita Sedimentologi Vol 20, No 1 (2011)
Publisher : Ikatan Ahli Geologi Indonesia

As Berita Sedimentologi journal aimed to bridge communications, the editor has prepared a special column for the academia, both lecturer and students. In this column, university researchers, lecturers and even students could contribute their articles.Students are welcome to submit their papers related to their laboratory, field studies, or campus academic activities related to sedimentary geology.For students who like to take their opportunity to publish their article, please follow the following guideline:Get permission from supervisorGet permission from the sponsoring company if applicable.Prepare figures such as:MapStratigraphic columnOutcrop photosPrepare the text in EnglishTotal pages including the figures should not longer than 3 pages of A4 size paper. The editors are happy to assist further on the paper preparation.This space will also accommodate news related to student activities such as field trips, seminars, conference, etc. AAPG student chapters, for example, could submit their activity news.

An Introduction to Cenozoic Macrofossils of Indonesia J.T. (Han) van Gorsel
Berita Sedimentologi Vol 30, No 1 (2014)
Publisher : Ikatan Ahli Geologi Indonesia

A brief overview is presented of the principal groups of Cenozoic macrofossils from outcrops in Indonesia. Prior to the 1930's macrofossils, in particular mollusks, were the principal objects of paleontological and biostratigraphic studies in Indonesia. Since then focus has shifted to microfossils, but it is argued that macrofossils still have the potential to significantly contribute to the knowledge of biostratigraphy, paleoenvironments, paleoclimate, paleobiogeography and plate tectonic reconstructions of the region. Cenozoic marine macrofossil assemblages from Indonesia all represent tropical faunas of Indo-Pacific province affinity.

Merits and Shortcomings of Heat Flow Estimates from Bottom Simulating Reflectors Minarwan Minarwan; Rahmat Utomo
Berita Sedimentologi Vol 32, No 1 (2015)
Publisher : Ikatan Ahli Geologi Indonesia

The presence of gas hydrates in deep marine sediments and their Bottom Simulating Reflectors (BSRs) on seismic lines can be used to estimate present-day surface heat flow. Despite its limited accuracy, the estimated heat flow is still useful as an input in thermal maturity modeling of a frontier basin.BSRs commonly occur at several hundred meters below the seafloor, in low latitudes generally in areas with water depth greater than about 700-1000m. They run parallel to the sea floor and may cross-cut lithological boundaries. They represent a phase boundary between a gas-hydrates-stable zone and underlying free gas- and water-saturated sediments. Since the depth of the hydrate- free gas phase change is a function of temperature, depth (pressure) and gas composition for a given gas composition (assuming hydrostatic pressure and mainly methane gas), the temperature gradient between seafloor and the BSR can be calculated from its depth. The temperature gradient can then be converted into heat flow, provided that thermal conductivity of the sediment is known.

Sulawesi Sedimentology Literature: A Brief Review J.T. van Gorsel
Berita Sedimentologi Vol 22, No 1 (2011)
Publisher : Ikatan Ahli Geologi Indonesia

Sulawesi is well known for its complex Cretaceous-Tertiary collisional tectonic history, with a succession of volcanic arc deposits. Numerous publications have appeared on these topics. Also quite a few papers discuss general stratigraphy of areas, but very few papers can be characterized as 'sedimentology papers', i.e. papers documenting and interpreting sedimentary structures, measured sections, current directions, provenance, depositional environments, paleogeography, etc.

A Review of Non-Marine Sequence Stratigraphy F. Hasan Sidi
Berita Sedimentologi Vol 6, No 1 (1997)
Publisher : Ikatan Ahli Geologi Indonesia

There has been a virtual explosion of stratigraphic studies utilizing the principles of sequence stratigraphy recently. Although the concept of time stratigraphy is not new, the packaging of depositional units into system tracks and sequences is. Sequence stratigraphy has evolved from the original concepts of seismic stratigraphy to a scale above seismic resolution. This concept provide a greatly improved understanding of facies geometries and reservoir architecture. It has developed into a powerful predictive facies analysis tool for both the hydrocarbon industry and academic research. This new approach has led to the reassessment of areas that in some cases have been the subject of intense geological scrutiny for decades.

Short Note: New Carbonate Outcrops in the Badung Peninsula, Southern Bali Herman Darman
Berita Sedimentologi Vol 34, No 1 (2016)
Publisher : Ikatan Ahli Geologi Indonesia

Recent excavations, facility constructions and road cuts in the Badung Peninsula, southern Bali have provided additional exposure to the Selatan Limestone Formation. This short note highlights interesting features of the newly discovered outcrops, which are situated near popular touristic destinations including the beaches of the south coast and Garuda Wisnu Kencana Cultural Park.Although the geology is relatively simple, the varying facies in the outcrops indicate a range of depositional processes. Overall, the limestone beds are flat. The dips of the layers are less than 10° at different directions. The limestones exposed at the observation locations consist of various types of limestones, which are essentially dominated by mudstone and packstone. Homogenous grains, classified as calcarenite to calcirudite, are also found abundant in several other units.

Page 11 of 29 | Total Record : 282

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Forum Sedimentologiwan Indonesia (FOSI) Komisi Sedimentologi Ikatan Ahli Geologi Indonesia (IAGI) Jl. Ciledug Raya Kav. 109 Cipulir, Kebayoran Lama, Jakarta Selatan, Indonesia

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Minarwan

Contact Email minarwanx@gmail.com

Phone +6281908602813

Journal Mail Official bs.fosi@gmail.com

Editorial Address Forum Sedimentologiwan Indonesia (FOSI) Komisi Sedimentologi Ikatan Ahli Geologi Indonesia (IAGI) Jl. Ciledug Raya Kav. 109 Cipulir, Kebayoran Lama, Jakarta Selatan, Indonesia

Location Kota adm. jakarta selatan, Dki jakarta INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Minarwan

Contact Email
minarwanx@gmail.com

Phone
+6281908602813

Journal Mail Official
bs.fosi@gmail.com

Editorial Address
Forum Sedimentologiwan Indonesia (FOSI) Komisi Sedimentologi Ikatan Ahli Geologi Indonesia (IAGI) Jl. Ciledug Raya Kav. 109 Cipulir, Kebayoran Lama, Jakarta Selatan, Indonesia

Location
Kota adm. jakarta selatan,

Dki jakarta

INDONESIA