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Berita Sedimentologi
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 4 Documents
 1 
Search results for , issue "Vol 45, No 1 (2020)" : 4 Documents clear
A New Insight of Talang Akar Formation in the Ridho Field, North Palembang Sub-basin, Indonesia: An Integrated Approach Togi Y. Sitinjak; Ricky A. Tampubolon; Ardian Pratama; Wildanto P. Nusantara; Aziza Muis; Harsanti Setiani
Berita Sedimentologi Vol 45, No 1 (2020)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2339.673 KB) | DOI: 10.51835/bsed.2020.45.1.49

Abstract

The synrift sandstone deposits of Eo-Oligocene Lemat (LMF) and Oligo-Miocene Talang Akar Formations (TAF) are the most well -known hydrocarbon reservoirs in the South Sumatra Basin, Indonesia. However, only limited studies on TAF in the North Palembang Sub-Basin have been published. In the Ridho field, TAF is characterized by fining-up sequences of inter bedded, fine to medium-grained sandstones and shales overlain by a coal layer as the top marker, while LMF comprises of continuous blocky-shaped, medium to coarse-grained, conglomeratic sandstones.Previous lithostratigraphy-driven sand to sand correlation between wells has created difficulties in understanding the geology and in producing consistent correlation, especially within the TAF. In order to define chronostratigraphy-based correlation and interpret the depositional environment of TAF and LMF, an integration between palynological, core study and petrophysical analysis was performed. The result of this integrated approach demonstrates aligned hypotheses. The occurrence of pollen Meyeripollis naharkotensis and Florschuetzia trilobata along the studied wells suggest Late Oligocene age. The palynology study subdivides TAF into three backmangrove-intertidal sand units with an increase of marine influence defining a transgression to the top of the TAF. The transgressive event is identified in core sample by lesser tidal influx sedimentary structures such as ripple, mudlayer, flaser and also finer grained sandstone at the top of TAF. Furthermore, based on petrophysical evaluation, better sand quality with lower NTG (net -to gross) near top TAF confirms the retrogradational event in this formation.The new sand unit definitions from the current study provide more consistent correlation in terms of sand thickness and characteristics for future modeling purposes.
Late Cretaceous Radiolarians from the Noni Formation, West Timor, Indonesia Munasri Munasri; Agus Handoyo Harsolumakso
Berita Sedimentologi Vol 45, No 1 (2020)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1148.95 KB) | DOI: 10.51835/bsed.2020.45.1.47

Abstract

Late Cretaceous (Cenomanian–Turonian) radiolarian fauna was recovered from a single chert sample of the Noni Formation in the Miomaffo District of West Timor, which is generally viewed as part of the allochthonous ‘Banda Terrane’. This fauna is characterized by the presence of Cryptamphorella conara, Diacantocapsa euganea, Dictyomitra formosa, Dictyomitra montisserei, Guttacapsa biacuta, Stichomitra communis, Patelula verteroensis, Pessagnobrachia fabianii, Praeconocaryomma lipmanae and others. The character of the radiolarian fauna shows a close resemblance to those in South Sulawesi and is very different from age equivalent radiolarian faunas in the ‘autochthonous’ southern foldbelts of West Timor (Kolbano) and Timor Leste (Viqueque). This report on the Late Cretaceous radiolarians in Timor attempts to identify the fauna, to clarify its age, and to indicate the paleogeographic origin of radiolarian bearing chert of the Noni Formation.
Sedimentary Basins of Indonesia: Outline and Thickness Variation Understanding Herman Darman; Doddy Yuliong B.A.
Berita Sedimentologi Vol 45, No 1 (2020)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2584.539 KB) | DOI: 10.51835/bsed.2020.45.1.48

Abstract

Offshore petroleum exploration in Indonesia began in late 1960’s and thereafter a significant number of seismic data sets were acquired. Based on these data, several basin outline maps were generated such as those published by Hamilton (1974), BEICIP FRANLAP (1992), and Sujanto (1997). Based on these data sets, 60 sedimentary basins were officially recognized by the Government of Indonesia (Sunarjanto et al., 2007 included in 2008 publication). The outlines of the basins were used as a reference by government officials and the petroleum industry. Recently, the Geological Agency published a map which shows 128 sedimentary basin outlines in Indonesia. Unfortunately, these maps were not accompanied with supporting subsurface data.The understanding of those sedimentary basins is very important for petroleum exploration, as they are basically the places to find hydrocarbons. Petroleum potential within a basin is related to its sediment accumulation and tectonic history. Critical petroleum system elements such as source rocks, reservoir and seal mainly comprise sedimentary rocks. The order of deposition, quantity of sediments and basin history will control the effectiveness and quantity of hydrocarbon generation in a particular basin.This article will go through the history of various basin outline maps and aim to provide additional information, such as basement depth, to give further detail on the basins in Indonesia. There are some detailed maps which show the distribution of oil and gas fields, which are obviously related to sediment thickness.
Late Cretaceous radiolarians from the Noni Formation, West Timor, Indonesia Munasri, Munasri; Harsolumakso, Agus Handoyo
Berita Sedimentologi Vol 45, No 1 (2020)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51835/bsed.2020.45.1.426

Abstract

Late Cretaceous (Cenomanian–Turonian) radiolarian fauna was recovered from a single chert sample of the Noni Formation in the Miomaffo District of West Timor, which is generally viewed as part of the allochthonous ‘Banda Terrane’.  This fauna is characterized by the presence of Cryptamphorella conara, Diacantocapsa euganea,  Dictyomitra formosa, Dictyomitra montisserei, Guttacapsa biacuta, Stichomitra communis, Patelula verteroensis, Pessagnobrachia fabianii, Praeconocaryomma lipmanae and others. The character of the radiolarian fauna shows a close resemblance to those in South Sulawesi and is very different from age-equivalent radiolarian faunas in the ‘autochthonous’ southern foldbelts of West Timor (Kolbano) and Timor Leste (Viqueque). This report on the Late Cretaceous radiolarians in Timor attempts to identify the fauna, to clarify its age, and to indicate the paleogeographic origin of radiolarian-bearing chert of the Noni Formation.

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