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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 282 Documents
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Giving names to features in geology; the choice between subjective listing or researching objective natural divisions Lunt, Peter; Luan, Xiwu
Berita Sedimentologi Vol 49, No 2 (2023)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51835/bsed.2023.49.2.429

Abstract

In literature the English playwright Shakespeare proposed that “a rose by any other name would smell as sweet”. Many geologist are also flexible about the names they apply to features, and are tolerant of both over-simplification and even making mistakes in the naming of formations or other features. It appears that precision of a single noun is considered subservient to the essence of the narrative, such as evaluating a hydrocarbon prospect, or giving an interpretation of history. Here it is argued that naming is important because geology is so rich in nouns, and consequently compound errors in the use of multiple, poorly-defined nouns rapidly degrades overall meaning. It is proposed that without names that are both natural and consistently applied, but also continually improved, the scientific framework soon falls apart. By this we mean that the geological understanding of exploration risk, or geological history, rapidly become too easily accommodating of any new data and thus loses all rigour. Good, natural names are the results of tested concepts and are themselves open to further testing. From such testing comes recognition that in nature there are both gradational variation in series as well as discrete categories. A search for good names is inexorably linked to a better understanding of the features concerned.
Microfacies and paleodepositional setting interpretation of the latest Oligocene to earliest Miocene Carbonate of Citarate Fm., Bayah High, West Java Hainim, Iwan
Berita Sedimentologi Vol 50, No 1 (2024)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51835/bsed.2024.50.1.451

Abstract

Four hundred and ten samples were collected from carbonate outcrops of Citarate Formation in the Bayah High area, west of Pelabuhan Ratu, West Java. Petrographic analysis reveals 14 carbonate microfacies distributed in the study area, which include: (1) Globigerinid wackestone-packstone, (2) Foraminiferal bioclastic packstone-grainstone, (3) Foraminiferal algal packstone-grainstone, (4) Benthic foraminifera-rich grainstone, (5) Red algal foraminifera packstone, (6) Globigerinid bioclastic packstone, (7) Coralline algal packstone-boundstone, (8) Branching coral packstone-grainstone, (9) Foraminifera coralgal packstone-grainstone, (10) Platy coral foraminiferal algal packstone-grainstone, (11) Intraclast/plagioclase-rich packstone-grainstone, (12) Massive coral boundstone-rudstone, (13) Platy coral bioclastic packstone-grainstone, and (14) Platy coral boundstone grainstone.Micropaleontological analysis of the carbonate microfacies reveals age distribution ranging from P22, N4, to younger than N4 (Blow’s Zonation), and Te4 (Adam’s letter stage), which are equivalent with the latest Oligocene to very Early Miocene Epoch.Detailed stratigraphic observation from outcrops and micropaleontological analysis show a north-south carbonate trend. This trend happened to superimpose the structural lineaments of Bayah High. It is interpreted that a shallow depositional environment developed in the western part and became deeper towards the east.This paper is part of a study of Oligo-Miocene carbonates and their relationship to tectonic events in West Java. By knowing the evolution of Oligo-Miocene carbonate rocks and their relationship with the tectonic development of West Java, it is possible to interpret the presence of these carbonate rocks below the surface for hydrocarbon exploration purposes.
Review of sedimentary basin evolution in Cambodia based on tectonic setting and logical information Sio, Sreymean; Or, Chanmoly; Eng, Chandoeun; Pech, Sopheap; Sreu, Tola
Berita Sedimentologi Vol 49, No 2 (2023)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51835/bsed.2023.49.2.439

Abstract

The paper aims to synthesize the evolution of sedimentary basins in Cambodia based on a comprehensive information on tectonic setting and existing database of their formation and sedimentation. The study includes a review on tectonic setting of Indochina, the formation of sedimentary basins around Cambodia, and the accessible data on sedimentary basins in Cambodia. Indochina, as well as Cambodia, had been influenced by the collision of three different plates or terranes such as the South China, Sibumasu-Sukhothai, and Paleo-Pacific that are associated with the evolution of Paleozoic-Mesozoic Basins namely Khorat and Kampong Som Basins. These two oldest basins, are interpreted as a Paleozoic – Mesozoic foreland basin that initially formed due to rifting during the Late Carboniferous to Late Permian, and later basin inversion and erosion took place due to the Mesozoic to earliest Cenozoic uplift. Then, Cambodia was affected by Tertiary strike-slip fault movements that also influenced the formation of Tonle Sap, Svayrieng and Khmer Tertiary rift basins. Tonle Sap and Svayrieng Basins are interpreted to be formed by extension during the Middle Eocene – Early Oligocene and inversion, uplift and denudation during the Miocene. The Khmer Basin was formed by rifting during the Eocene to the Late Oligocene, followed by rapid thermal subsidence from the Early to Middle Miocene. Finally, Khmer basin was affected by the Middle – Late Miocene to Pleistocene inversion.
Cover & Front Matter Sedimentologi, Berita
Berita Sedimentologi Vol 49, No 3 (2024)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51835/bsed.2024.49.3.445

Abstract

Cover and Front Matter
Jurassic-Paleogene spreading history of the northern Indian Ocean as a constraint on the evolution of the north Australia continental margin Charlton, Tim R.
Berita Sedimentologi Vol 49, No 2 (2023)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51835/bsed.2023.49.2.428

Abstract

The spreading history of the northern Indian Ocean is re-examined with the aim of interpreting the late Mesozoic-Paleogene evolution of the northern Australian continental margin in eastern Indonesia and Timor-Leste. The earliest seafloor spreading (‘Argo phase’) developed between approximately 155-131Ma (Kimmeridgian, Late Jurassic to Valanginian, Early Cretaceous). A clockwise pole of rotation relative to Australia (‘Argo pole’) is interpreted at 7°09’S, 133°07’E, a present-day location near the Tanimbar islands in eastern Indonesia. A second ‘Gascoyne’ phase of spreading, between 131-100Ma (late Early Cretaceous), had an interpreted clockwise rotation pole at 3°40’N, 125°00’E, a present-day location between the islands of Mindanao (southern Philippines) and Sulawesi (eastern Indonesia). A third ‘Wharton’ phase of spreading, commencing at the beginning of the Late Cretaceous (~100Ma) had a more distant pole (clockwise pole at 5°S, 171°E: Jacob et al., 2014), although more local rotations are interpreted for the Greater Sula Spur continental terrane, about a pole estimated at 9°24’S, 134°40’E, close to the earlier Argo pole.The motions of two continental terranes are inferred from the spreading history. The Argoland Terrane, which is identified in this study as eastern Sundaland (Borneo and Java), would not have entirely detached from Australia before the mid Cretaceous due to the relatively proximal locations of the Argo and Gascoyne rotation poles. In this scenario Argoland could not have collided with Eurasia in the Cretaceous, as suggested by several previous studies. The Greater Sula Spur Terrane (several continental fragments in present-day eastern Indonesia), is repositioned in the initial reconstructions immediately north of Timor, and did not move northward to its late Paleogene (pre-Neogene collision) location until the Wharton phase of rifting that commenced in the Late Cretaceous. This northward motion of the Greater Sula Spur was accommodated by the development of a narrow oceanic basin (the Banda Embayment).The reconstructions suggest that the Argoland and Greater Sula Spur continental terranes formed a continuous crustal connection between SE Asia and northern Australia throughout the late Mesozoic and early Paleogene, and that the Indian Ocean developed entirely within the body of the disrupting Gondwanaland supercontinent, rather than linking eastwards into the Pacific Ocean.
Late Jurassic and Early Cretaceous Radiolarian Age Determinations from Timor-Leste Munasri, Munasri; Charlton, Timothy Richard; Guterres, Maria; Gandara, Dino
Berita Sedimentologi Vol 50, No 1 (2024)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51835/bsed.2024.50.1.455

Abstract

Two new sets of palaeontological age determinations based on radiolaria are reported from Timor-Leste. The first is from the Suai Loro-1 petroleum exploration well, located near Suai town in SW Timor-Leste, drilled by Timor Oil in 1971. Newly rediscovered ditch cutting samples from the previously undated basal section of this well have yielded radiolarians of Late Jurassic (middle Oxfordian to middle Kimmeridgian) age. On lithology, this stratigraphic interval of reddish shales and interbedded limestones is assigned to the Tchinver Formation.A second set of radiolarian determinations is from samples collected in the Caraulun river south of Samé town in south-central Timor-Leste. These are dated to the Early Cretaceous (late Valanginian-Hauterivian). The outcrop succession of radiolarian cherts, sandstones and red shales are assigned to the Wai Bua Formation as defined in East Timor (Timor-Leste), which is equivalent to the Nakfunu Formation in Indonesian West Timor.
The importance of process in modern tectono-stratigraphy and regional geology Lunt, Peter; Luan, Xiwu
Berita Sedimentologi Vol 49, No 3 (2024)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51835/bsed.2024.49.3.430

Abstract

In its simplest form geology is a history, which appears to only require the compilation of a chronicle. However, our data is fragmentary, and aspects such as the dimension of time and the depositional setting of sediments are obscured, especially the correlation of time over wide areas and determining rates of change. As a result, geology cannot advance just by accumulating observations, expecting that a credible narrative will inevitably emerge. There must be reality checks on the proposed history to avoid confirmation bias towards over-simple expectations. In a region suspected to be complicated and, in many ways, unique we require an abductive investigative technique to reconstruct its history. This means to force testing through cross-checking independent but related data types. Such inter-disciplinary testing can produce a rigorous framework, even to reconstruct special situations not accommodated by ideas models. This essay examines three topics necessary for such evidence-based investigation. The first is to investigate and document the reliability of observations (like the “error-bars” required in hard-sciences). Secondly is the shift from model-based to evidence-based processes (from deductive to abductive reasoning). Thirdly is the need to consider if conclusions are “significant” - i.e., is there confidence that an interpretation would be repeatable by independent workers, as well as being distinct from background variability in data. It is proposed that we must acknowledge the replication crisis highlighted in the past two decades in other sciences by considering how we work in the complex geology of SE Asia, to prevent a similar validation crisis undermining the value of the science here.
BOOK REVIEW: PIONEERS AND MILESTONES OF INDONESIAN GEOLOGY Purba, Junida Rejeki; Darman, Herman
Berita Sedimentologi Vol 51, No 1 (2025)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51835/bsed.2025.51.1.443

Abstract

J.T. van Gorsel's four-volume series, "The Pioneers and Milestones of Indonesian Geology," provides a comprehensive exploration of the geological history of Indonesia. The books delve into the lives and contributions of 238 researchers, including geologists, paleontologists, and other scientists who have made significant advancements in understanding the region's complex geology.Through extensive research and analysis of historical documents, the author highlights the pioneering work of these individuals, many of whom were foreign-born and active during the Dutch colonial era. The books offer valuable insights into the challenges and rewards of conducting geological research in Indonesia, a region known for its diverse landscapes and complex geological processes.By preserving the legacy of these pioneers, Van Gorsel aims to inspire future generations of geoscientists and provide a solid foundation for ongoing research in Indonesian geology.
Front Matter Berita Sedimentologi Vol. 51 No.1 Nugraha, Abang Mansyursyah Surya
Berita Sedimentologi Vol 51, No 1 (2025)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51835/bsed.2025.51.1.521

Abstract

Front Matter Berita Sedimentologi Vol. 51 No.1 August 2025
Hydrocarbon Generation and Seepage in an Emerging Fold-and-Thrust Belt, Cenderawasih Bay, Indonesia Baillie, Peter William; Decker, John; Gilleran, Paul; Johnstone, Tanya; Orange, Daniel L.; Teas, Philip A.
Berita Sedimentologi Vol 51, No 1 (2025)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51835/bsed.2025.51.1.465

Abstract

Cenderawasih Bay, a triangular embayment located at the western end of the island of New Guinea, lies within the Eastern Indonesia region of complex and rapid neotectonics. In Cenderawasih Bay, the Yapen Fault marks the boundary between the oceanic Pacific plate and continental material of the Australia tectonic plate. A fold-and-thrust belt is developing in response to left-lateral strike-slip movements on the Yapen fault system. Geochemistry from sea bottom core samples the presence of an active petroleum system within the emerging fold-and-thrust belt.

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