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Berita Sedimentologi

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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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Regional Overview of Orogenic Belts in Indonesia: Emphasis on the Occurrences of Thrust Wedge Systems Aldo Febriansyah Putra; Salahuddin Husein
Berita Sedimentologi Vol 44, No 1 (2019)
Publisher : Ikatan Ahli Geologi Indonesia

Regional overview to the thrust wedge systems in Indonesia attempts to compile and review geologic settings related to the development of basement uplift and fold-thrust belts. Overview will be represented in orogenic belts of different geologic settings: Langsa Fold-Thrust Belt (North Sumatra Basin), Banyumas Fold-Thrust Belt (Western Central Java), Kutei Basin, West Sulawesi Fold-Thrust Belt (Lariang-Karama Basins and Makassar Straits), Offshore Northern Banggai-Sula, Misool-Onin-Kumawa Ridge, Berau-Bintuni Basins, and Lengguru Fuld-Thrust Belt. Key ideas and discussions encompass surface structural geology, geomorphology, and subsurface geology. Aiming to draw the big pictures, the integrated approaches will elaborate the relationship of thrust wedge system with strike-slip faulting as adjoining structural province. Geomorphology will be the basis to construct regional structural maps, while seismic images and regional cross-sections will contribute to subsurface reconstructions. Synthesis will highlight similarities on geomorphic features, associated structures to thrust wedge system, Pliocene – Recent as critical time to orogenic building in Indonesia, geodynamic significance of strike-slip faulting, and geodynamic settings related to thrust wedge system in Indonesia. Thrust wedge orogenic belts share curvilinear thrust faults traces and intensive folding near mountain front. On the other hand, associated structures to thrust wedge include synclinal feature in thrust front, detachment folds, and transpressive transtensional fault reactivation. Strike-slip faults may act as separate or associated structures in thrust wedge orogeny. Separate strike-slip faults can be observed as Sumatran Fault, Palu-Koro Fault, Balantak Fault, and Tarera-Aiduna Fault that act in response to slip partitioning or shift in deformation. Reactivated faults and tear faults are considered as associated structures to thrust wedge system. Thrust wedge system develops in both subduction and collisional tectonics.

Outline of Tertiary Coal Basins of Indonesia R.P. Koesoemadinata
Berita Sedimentologi Vol 17, No 1 (2002)
Publisher : Ikatan Ahli Geologi Indonesia

Base on crustal composition and plate tectonics the Indonesian Archipelago can subdivided into three distinct tectonic regions, namely: Western Indonesia, Central Indonesia, and Eastern Indonesia. Western Indonesia consists of the Sunda shelf belonging to the Asian continent and its associated active margin continental island arcs and passive margins as well as intracontinental tectonic features, such as sutures. Central Indonesia consists of an assortment of sliding and colliding continental fragments or micro-continents, mainly detached from the Australian continent amids oceanic platelets of various ages and associated volcanic island arcs. Eastern Indonesia consists of the Arafura Shelf belonging to the Australian continent and its associated continental margin features.Previously Tertiary coal deposits in Western Indonesia were classified as Paleogene and Neogene coals. Recent knowledge indicates that Tertiary coals was deposited during three distinct tectonic episodes: 1) Syn-rift depositional phase (Eocene-Oligocene), 2) Post-rift transgression phase (Late Eocene to Early Miocene), and 3) Syn-orogenic regressive phase (Mid-Miocene to Plio-Pleistocene). These episodes do not occur at the same time throughout western Indonesia, but varies from basin to basin.Syn-rift coal was deposited in active rift basin and associated valley-fill sediments in fluviatile to lacustrine environment. Coal deposited in this environment tends to be lenticular and limited areal extent, with high calorific values (~7000 Kcal/kg), low moisture content and low sulphur content. This type of coal is represented by Sawahlunto Formation in Ombilin basin, Central Sumatra.Post-rift transgressive coal was deposited on a stable shell environment, during a tectonic quiesence in Late Eocene to Early Miocene time. Examples of this coal is given from Central Sumatra basin (Early Miocene), and especially represented by Senakin coal in the Eocene Lower Tanjung Formation in the Barito basin and in the Pasir-Asem-asem basin. Coal seams deposited in this environment tends to be thin but laterally continuous and persistent, with high calorific values, variable to high sulphur content.Syn-orogenic regressive coal deposition took place in mid-Miocene to Plio-Pleistocene time in response to uplifts adjacent to various types of basins in which the coal was deposited. In Java and Sumatra these are the back-arc and fore-arc basins, as the result of the Indian oceanic plate subduction beneath the Asian continent forming an island arc environment. Coal was deposited in a prograding deltaic sequence both in the fore-arc (Bengkulu basin) and back-arc basin South Sumatra or Palembang basin in response to the uplift of the magmatic arc. In South-east Kalimantan syn-orogenic coal was deposited in the regressive sequence of the Miocene Warukin Formation (Warukin Coal) in response to uplift of the Meratus Range suture on the related adjacent Barito and Asem-asem/Pasir basins. In East Kalimantan syn-orogenic coal was deposited in prograding deltas developed at the passive margin associated with the opening of Makassar Strait (Lower Kuteri and Tarakan basins), and regression took place in response to the uplift of the Kuching zone towards the west. An example of this syn-orogenic coal is the Pinang coala in the Balikpapan Formation. Coal in the syn-orogenic regressive phase tends to develop thick but variable seams, rather low calorific values (~5000 kcal/kg), high moisture content, and low sulphur content.In Central Indonesia region, only SW Sulawesi, a continental fragment belonging to the Sunda shelf, shows significant coal deposits. Syn-rift, post-rift transgressive and syn-orogenic coal can be distinguished, such as the syn-rift coal at Tondongkura.Eastern Indonesia is dominated by the island of Irian Jaya/Papua, which shows the same tectono-stratigraphic development as on the Australian mainland. The Tertiary sequence is mainly developed as carbonates. Clastics were deposited in only in Plio-Pleistocene time in response to uplifts related to collision of the Australian continent with island arcs systems, and to lateral displacement of continental fragments. Lignites are known in the resulting syn-orogenic basins, such as the foreland basins of the Central Irian Jaya Mts range (Akimeugah and Iwur basins), the Meervlakte or Mamberamo basin in North Itian Jaya, the Bintuni basin associated with the Lengguru foldbelt, and the Salawati basin related to wrenching of the Sorong Fault. However, significant coal occurrences are known in Bintuni basin, which at present is still an enigma.

Geohistory Analysis of South Makassar Peter Lunt; J.T. (Han) van Gorsel
Berita Sedimentologi Vol 28, No 1 (2013)
Publisher : Ikatan Ahli Geologi Indonesia

A quantitative approach to stratigraphy shows how the south Makassar Straits Basin developed, and how the major sequences of sediment were deposited. After the initial rifting of the grabens there were four major, basin changing, unconformities that strongly affected sedimentation; at about 39 Ma (later Middle Eocene), 36 Ma (early part of Late Eocene), 34 Ma (almost on the Eocene to Oligocene boundary) and about 24 Ma (almost at the Oligocene-Miocene boundary).The 39 Ma event saw accelerated rifting on the distal margins of Sundaland, in the south and southeast. The 36 Ma event is very strongly expressed in the South Makassar area and is shown by the geohistory analysis to have included basement subsiding by as much as 2 kilometres in 2 million years. The 34 Ma event led to the onset of the Berai Limestone to the west and very strongly reduced rates of deep-water sedimentation throughout the Makassar to Spermonde area. The c. 24 Ma event saw a substantial change in sedimentary conditions, with the end of condensed deep marine clastics and shallow marine Berai carbonates, and the start of a new clastic phase with high rates of sedimentation. These times of major change are all thought to be controlled by tectonism, because their magnitude exceeds rates of eustatic change, and also because their geographic expression is highly variable.The first rift phase contains important lacustrine hydrocarbon source rocks in the inland areas of Sundaland, and large deltas with coaly sources on the fringes of the continent. The subsidence and associated sediment supply history has impact on the later deposition of coaly deltas, and the accumulation of overburden and thermal maturity of buried sediments.

An Introduction to Mesozoic Faunas and Floras of Indonesia J.T. (Han) van Gorsel
Berita Sedimentologi Vol 31, No 1 (2014)
Publisher : Ikatan Ahli Geologi Indonesia

This paper is a continuation of the paper on Paleozoic and reviews the main Mesozoic fossil groups of Indonesia and key literature, with focus on groups that are of biostratigraphic or paleobiogeographic significance.

Denudation - Sediment Accumulation Systems: Quantitative Aspects of Terrestrial Sediment Yield and Basin Filling Gerhard Einsele
Berita Sedimentologi Vol 7, No 1 (1998)
Publisher : Ikatan Ahli Geologi Indonesia

The role of terrestrial sediment supply in basin filling and sequence stratigraphy has been frequently mentioned, but quantitative data have been rarely presented and evaluated.

Influence of Hinterland Bedrock Lithologies on Aspect of Borneo's Deepwater Fold and Thrust Belt Andrew Cullen
Berita Sedimentologi Vol 21, No 1 (2011)
Publisher : Ikatan Ahli Geologi Indonesia

Each of the catchment areas of Borneo’s major river systems has distinct differences in their bedrock lithologies. As the provenance for the sediments delivered to the deepwater depositional systems, these lithological variations in the hinterland are an important consideration when predicting high quality turbidite reservoirs as they influence compaction and diagenesis. This paper examines these issues for the Baram, Sandakan, Tarakan, and Kutei Basins. Additionally, the role of hinterland bedrock composition of the Baram and Padas Rivers is considered in terms of influencing along strike changes in the structural style of the Northwest Borneo deepwater fold and thrust belts.

From Patagonia to Indonesia: plant fossils highlight West Gondwanan legacy in the Malesian flora Wilf, Peter
Berita Sedimentologi Vol 47, No 3 (2021)
Publisher : Ikatan Ahli Geologi Indonesia

Rainforests with the chinquapin Castanopsis and the yellowwood conifer Dacrycarpus occur today throughout Indonesia and the larger Malesian ecoregion, but they represent, in part, a history of survival stretching tens of millions of years and thousands of kilometers to the palaeo-Antarctic. Unlike New World and African tropical rainforests, the Malesian flora’s history is closely tied to tectonic introductions from exotic terranes, and thus, much palaeobotanical data about the origins of the Malesian rainforest comes from those terranes. For example, South America, Antarctica, and Australia remained adjacent until the Eocene final separation of Gondwana, and warm climates promoted high-latitude dispersals among those landmasses. Australia’s subsequent northward movement led to the late Oligocene Sahul-Sunda collision and the uplift of New Guinea, allowing the introductions into Malesia of survivor taxa that were once widespread in mesic Gondwanan rainforests. In Patagonian Argentina, the prolific Laguna del Hunco (52.2 Ma) site preserves abundant and well-preserved fossils of an unexpectedly large number of lineages whose living relatives characteristically associate in perhumid, lower montane “oak-laurel” rainforests of Malesia, especially in New Guinea. These taxa include the angiosperms Castanopsis (Fagaceae), Gymnostoma (rhu, Casuarinaceae), Alatonucula (extinct engelhardioid Juglandaceae), Eucalyptus (gums, Myrtaceae), Ceratopetalum (coachwood, Cunoniaceae), Lauraceae (laurel family), and Ripogonum (supplejack, Ripogonaceae); conifers in Cupressaceae (cypress family: Papuacedrus), Araucariaceae (dammars and relatives: Agathis and Araucaria Section Eutacta), and Podocarpaceae (yellowwoods: Dacrycarpus, Podocarpus, and a species similar to Phyllocladus); and the fern Todea (king fern, Osmundaceae). Many of these records are the only occurrences of the respective taxa in South America, living or fossil, vastly extending their past ranges and thus the biogeographic history of part of the Malesian mountain flora. The living-fossil taxa inhabit, and several dominate, critical watershed areas of high endemism and biodiversity in Malesia’s endangered tropical-montane rainforests. In Malesia itself, there have been very few Cenozoic palaeobotanical investigations for about a century or more. To remedy this situation and improve understanding of the evolution of the Malesian flora in situ, we have begun palaeobotanical fieldwork in collaboration with Professor Yahdi Zaim and ITB, along with international colleagues. So far, we have discovered several promising new fossil sites in the Eocene-Oligocene of West Sumatra (Sangkarewang and Sawahlunto formations) and South Kalimantan (Tanjung Formation), and I will report preliminary observations.

Basin with Multiple Sediment Sources: Tectonic Evolution, Stratigraphic Record and Reservoir Potential of the Bunguran Trough, South China Sea John Jong; Steven M. Barker; Franz L. Kessler; Tran Quoc Tan
Berita Sedimentologi Vol 38, No 1 (2017)
Publisher : Ikatan Ahli Geologi Indonesia

The Bunguran Trough is an intra-continental pull-apart basin located in the deepwater domain of the Rajang/West Luconia Delta province, offshore Sarawak. The area evolved as a tectonically-induced sag basin, where the two major lineaments, the Baram Line and the Red River Fault, appear to coalesce to form a major releasing fault bend. Its oldest stratigraphy was formed by shelf clastic deposits of the Late Oligocene Cycle I, Gabus Formation of the Natuna Basin, now buried to a depth of more than 7,000m. The Neogene clastics deposited above are of neritic and bathyal characters. The Early Miocene Cycles II/III, Arang Formation equivalent, consist of shallow marine to slope deposits, and are overlain by base-of-slope to very distal muddy sediments equivalent to Cycle IV and younger Terumbu and Muda formations. All sedimentary units, apart from the youngest Holocene section were subjected to deformation by a variety of tectonic drivers at distinct intervals.Investigation of the Late Oligocene to present-day palaeogeographic evolution of the Natuna and offshore Sarawak regions, in conjunction with a study of the Plio-Pleistocene deformation history and the corresponding sedimentation rates in the Bunguran Trough reveal the following sediment source patterns:The Natuna contributed medium to mostly fine-grained feldspatic and quartz-rich turbidite deposits.Fine sand and silt-rich deposits reached the Bunguran Trough from the fringes of the Rajang (or West Luconia) Delta. The advancing delta front generated turbidite currents running dominantly north to northeast. These clastics can be characterised as mud-rich, with channelised, and highly sinuous geometries accompanied with lobate turbidite deposits having higher sand potential.A minor amount of sediment might have been derived from localised sources in the Dangerous Grounds/North Luconia and Central Luconia Platform areas to the north and east, respectively.From Oligocene to Early Miocene times, sediments were probably sourced from the Natuna Arch/Terumbu Platform areas, but during the Neogene sediment supply shifted to the Rajang Delta in the south. In the Pliocene the Natuna area became important again, as demonstrated by mineralogy and recently acquired 2D/3D seismic data. In addition, the semi-quantitative analysis of the sedimentation rates showed that the rates were low before 3Ma, increasing in the Late Pliocene, and peaking in the Pleistocene. Physical compaction is thought to have played a key role in this trend, in addition to the increased sediment supply from the Natuna Arch.This sequence stratigraphic and sediment compositional study suggests that the Late Miocene to Pleistocene (post-Mid Miocene Unconformity) intervals of the Bunguran Trough consist of predominantly deepwater slope to basinal deposits including turbidites, mass transport deposits, gravity flows and hemipelagic mudstones. Recent exploration well results suggest that sediment provenance from the Natuna Arch provided siltier material with some calcareous content, while the Rajang Delta provided very fine-grained material with very little sand. The quality and distribution of reservoir sand remain the main exploration risk in the Bunguran Trough, largely due to the fine-grained argillaceous nature of the predominant Rajang Delta source.

The Potential for Undersea Mining David Dekker; Raymond Binns
Berita Sedimentologi Vol 14, No 1 (2000)
Publisher : Ikatan Ahli Geologi Indonesia

The deep sea floor offers new opportunities for minerals exploration. Recent discoveries of high-grade massive sulphide mineralization represent resources whose extent is still unknown. Ferro-manganese nodules formed on abyssal plains are of more modest grade, but very expensive in area. While it is likely that continental shelves may contain seafloor mineralization deeper than deposits already exploited in coastal areas by conventional dredging, the focus of this paper is the hydrothermal vents of island arc and back-arc areas and the abyssal plains of the deep sea. These hold promise of ore deposits quite different from those known of land. Environmental advantages in mining the sea floor include no impact on the surface environment and in some cases opportunities for disposal of tailings back on the seafloor.

Short Note: Sedimentology of Bali Touristic Locations - Tanah Lot and Uluwatu Darman, Herman
Berita Sedimentologi Vol 25, No 1 (2012)
Publisher : Ikatan Ahli Geologi Indonesia

Tanah Lot and Uluwatu are famous touristic sites in the southern part of Bali, and part of the Sunda Volcanic Arc. Most visitors come to these places to enjoy the scenery and visit the temple. The uniquity of these sites, however, is the result of the specific local geological setting in which they are located.The Tanah Lot temple was built on top of Quarternary volcanic clastic deposits, and was separated from the main island because of erosional processes. Uluwatu which is well known for the temple was built on a Miocene limestone cliff. Due to the excellent exposure of the geology, both localities allow for studying the sedimentary history which has resulted in these remarkable sites.This article discusses the stratigraphy and sedimentological features seen on these two locations. Despite the excellent exposure, both locations have received very little attention and only few studies have been reported. Both sites but especially the Uluwatu cliff, provides an excellent lateral exposure, allowing to discuss the depositional in a spatial framework. The outcrops in both locations show close relationship between volcanic activity and carbonate deposition.

Page 13 of 29 | Total Record : 282

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Editorial Address 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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Contact Name
Minarwan

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minarwanx@gmail.com

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+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