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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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Devonian Carbonate of Telen River, East Kalimantan Fransiskus Sugiaman; Ludy Andria
Berita Sedimentologi Vol 10, No 1 (1998)
Publisher : Ikatan Ahli Geologi Indonesia

BSc Thesis submitted to Bandung Institute of Technology, 1990In 1925, the Dutch Colonial Government sent a scientific expedition team to East Kalimantan, which was called "Midden Oost Borneo Expeditie" and led by H. Witkamp. The expedition collected rock samples from Telen River, a tributary of Mahakam River. In 1940, L. Rutten analyzed the rock samples and found Devonian fossils, which were known as the oldest fossils in western part of Indonesia. The fossils were found in a dark, crystalline limestone and Marks (1951) included the limestone into Danau facies. The existence and location of the limestone is often mentioned and cited by many geologist, such as Van Bemmelen (1949), Marks (1957), Sartono (1970), and Soejono (1988), since it is assumed as a classical stratigraphic location.The location of the Devonicn limestone had never been revisited since the Dutch expedition, due to its remote location and difficult accessibility. The distribution of the Devonian limestone and its stratigraphic correlation with other units were still a mystery. Noticing the limitation of the geological information on the Devonian limestone, the Association of Geology Students "GEA" from Bandung Institute of Technology (ITB) organized a scientific expedition, which is called Devonian Expedition 1989. Field work was conducted in October to November 1989.

A Guest Lecture and An AAPG Course at Sultan Hasanuddin University, Makassar, Indonesia Reijers, Tom J.A.
Berita Sedimentologi Vol 23, No 1 (2012)
Publisher : Ikatan Ahli Geologi Indonesia

Tenggar Cave, Tulungagung: preliminary study and its paleontological potentials Agus Tri Hascaryo; Rusyad Adi Suriyanto; Delta Bayu Murti; Tuti Koesbardiati
Berita Sedimentologi Vol 47, No 3 (2021)
Publisher : Ikatan Ahli Geologi Indonesia

Goa Tenggar or Tenggar Cave is situated in the karstic physiography of southern Tulungagung, East Java that made up of prehistoric caves. These include the Wajak complex (minimum age of 37.4 to 28.5 thousand years ago) and the Song Gentong (around 7000 BP). The formation of Tenggar Cave is influenced by the subterranean river that penetrates the limestone unit. This cave has a front width of ± 10 m and a roof height of ± 8 m. The east side of the cave floor is a layer of soil, and the western side is the river. The inside of the cave composed by very compact conglomerate deposits and paleosoil that contains faunal remains, including Cervus sp., Bos sp., Bubalus sp., and Bibos sp., which may have occurred during the Pleistocene. The fossilized faunal remains from Tenggar Cave show that there was a relatively open environment during that time, such as a savannah with large trees and flowing rivers around the cave. The paleoenvironment indicates late Pleistocene to early Holocene period, similar to paleoenvironment in the Sewu Mountains that stretch along the southern part Java from central to the eastern tip of the island includes the coastal towns of Gunung Kidul, Pacitan and Tulungagung. The situation is certainly a point of interest when associating the findings with the surrounding sites, starting from Wajak, Song Gentong, Pacitan, Ponorogo, and Gunung Kidul. However, absolute dating test is necessary to be more certain of the lifetime of the fossilized fauna. If the fossils were from the Late Pleistocene, it could be an important information for the fields of paleontology, paleoanthropology, and prehistoric archaeology given that the occurrence of sites with such antiquity are limited in Southeast Asia. It is essential to conduct intensive research in Tenggar Cave in the future.

Report on the Geological Field Trip to Mahakam Delta and Balikpapan Bay (August 31st to September 4th, 2018), Organized by FOSI-IAS-SEPM as Part of Regional Seminar: Past & Present Sedimentation in Tropical Region Tri Handayani
Berita Sedimentologi Vol 42, No 1 (2019)
Publisher : Ikatan Ahli Geologi Indonesia

The Mahakam Delta and Balikpapan Bay Field Trip was held on August 31st to September 4th, 2018 and lead by Dr. Erlangga Septama (G and G Advisor for Pertamina EP asset 5 at that time). Pertamina EP Asset 5 has carried out several fieldworks in the Mahakam Delta, Balikpapan Bay and surrounding area since 2013 to improve the understanding of subsurface reservoir geometry, internal architecture and potential sand connectivity in a less constrained style (e.g. surface outcrop vs. core or wireline log data). The study, as also our field trip; aimed to characterize the facies and stratigraphy of the deltaic sequence from outcrops and correlates them to the subsurface data in Sangasanga Field. This field based study is required to fill the knowledge gap due to the scarcity of the subsurface data in the existing oilfields.

Revisiting the Middle Baong Sand: Basin Floor Fan or Slope Fan in Origin? Siti Nur'aini; Soejono Martodjojo; Frank W. Musgrove; Jon Bon
Berita Sedimentologi Vol 15, No 1 (2001)
Publisher : Ikatan Ahli Geologi Indonesia

The Baong Formation contains three lithology units, namely shale unit (lower part), sand unit (middle part) and another shale unit (upper parts). The middle part of Baong Formation is usually called as the Middle Baong Sand (MBS) because it was deposited between two deep-marine shale lithologies during the Middle Miocene time. The Middle Baong Sand is the first turbidite reservoir found in Indonesia. Two feeder systems of Baong Sand came from the Barisan Mountain and the Malaka Shelf.Several authors had interpreted the Middle Baong Sand in Duyung Well as basin floor fan sediments. The Baong Sand in North Lho Sukon Deep was concluded to be slope fan complex, whereas in Jambuaye Utara Well was interpreted to be highstand sediments. The interpretation of this unit was merely leaned on log signatures or seismic characters without considering their presence on the regional geologic setting. The aim of this study is to investigate the depositional model of the Baong Sand within the geological setting of North Sumatra Basin.

Longshore Bar Deposits in a Modern Fluvial-Dominated Delta: A Case Study from the Wulan Delta, Demak, Central Java, Indonesia Hasan Tri Atmojo; Achmad Rizal; Farchan Nauval; Djati Wicaksono Sadewo; Adrian Hanenda; Hadi Nugroho; Anis Kurniasih; Irfan Cibaj
Berita Sedimentologi Vol 36, No 1 (2016)
Publisher : Ikatan Ahli Geologi Indonesia

The Wulan Delta is located about 30km NE of Semarang city, at the northern coast of Central Java. The delta began to develop in Quaternary with sediment being supplied by the Wulan River. In the last ten years, a longshore bar deposit has been developing at the northern to northeastern part of the delta, reflecting a change in depositional style from a river-dominated delta to a more wave/ longshore current-dominated system.Field work was done recently to determine the stratigraphic pattern, lateral distribution, sand geometry, and the origin of these longshore bar deposits. This included core sampling, sedimentological description and lithology correlation. Forty core samples were taken and 34 out of the 40 cores were used in correlation and interpretation. Qualitative analyses (granulometry) were then conducted on the cored sand deposits to get the sorting, skewness and kurtosis values.The longshore bar deposit of the Wulan Delta was formed by longshore currents that reworked sediment material to the shoreline and deposited sands laterally around the river mouth. Sediment transport dynamics influenced saltation swash and backwash, which are interpreted from the presence of swash cross-stratification as a characteristic of deposition in the foreshore area. The longshore bar deposit was deposited progressively seaward due to rapid sediment influx from up-river and limited accommodation space. The geometry of the sand deposits was measured for three segments of longshore sand bars. At STA LSB 1 it is 2773m long, 830m wide and 0.75m thick. At STA LSB 2 it is 1082m long, 272m wide and 0.5 m thick; and at the last station it is 1276m long, 374m wide and 1m thick.

Deltaic Reservoir Partitions and Connectivity Herman Darman
Berita Sedimentologi Vol 12, No 1 (1999)
Publisher : Ikatan Ahli Geologi Indonesia

A major part of the oil in the world produced from sandstone reservoirs has been from ancient delta systems. In general deltaic sands occur farther down dip than any other type of sand and they have relatively high recovery efficiency. Detail depositional environment study on deltaic reservoirs is important to create a model showing the distribution of reservoir properties that affect fluid flow. This article discussed the geometry and connectivity of deltaic reservoirs.

The Sorong Fault Zone Kinematics: Implication for Structural Evolution on Salawati Basin, Seram and Misool, West Papua, Indonesia Riadini, Putri; Sapiie, Benyamin; Surya Nugraha, A.M.
Berita Sedimentologi Vol 24, No 1 (2012)
Publisher : Ikatan Ahli Geologi Indonesia

The Sorong Fault Zone (SFZ) is an active left lateral fault system that active since the Late Miocene. The SFZ is located in the northern margin of Papua, Indonesia, extended thousand kilometers from the Eastern part of the island to the Bird's Head region. Our new model indicates that SFZ moved the Bird's Head area, including Salawati Basin to the west, related to the movement of the Pacific Plate. The movement of SFZ involves rotation and translation that separates Salawati Basin from the Bird's Head region with basement high as the boundary of the basin, and also give an implication to the evolution of Seram Fold Thrust Belt (SFTB) and Misool Onin Kumawa Anticline (MOKA).More than 200 seismic lines have been interpreted along Seram, Misool, and Salawati offshores. These interpretations show the development of listric and planar normal faulting at Western part of Misool island and flower structure at NW Bird's Head region. This faulting activity was interpreted as a result of SFZ activities, which cut Paleozoic through the Tertiary formations. The listric and planar normal fault in the Salawati Basin explains the block rotation mechanism that related to the Bird's Head movement to the west. In addition, flower structures that observed at NW Bird's Head indicate the shortening effect of the SFZ activities. Seemingly, rotation and translation of SFZ to the west are associated with the evolution of SFTB that indicate by NESW shortening perpendicular to the island. The deformation in the SFTB showed the development of fold-thrust belt structure at Seram Trough area, which repeated the Mesozoic-Miocene sequences, with the detachment surface located between Seram and Seram Trough. Reverse fault at Mesozoic through Miocene sequences in the north of the trough and at Misool area are reactivated normal faults formed during the NW shelf of Australia rifting since the Mesozoic. Therefore, SW directed shortening as a response of the Bird's Head region movement combined with additional westward movement of Tarera-Aiduna strike-slip system forms the SFTB.New seismic interpretations combined with palinspastic reconstruction suggest that there are rotation and translation phase in relation to SFZ mechanism that develops the Salawati Basin, MOKA, and SFTB. These deformations mechanism are active since the Late Miocene related to the collision between Pacific island arc complexes and passive margin of the NW Australian plate.

The hidden sedimentary basin underneath the Quaternary volcanic unit in Bogor and Kendeng area Erlangga Septama; C. Prasetyadi; A Abdurrokhim; T. Setiawan; P.D. Wardaya; R. Raguwanti; R. Ryacudu; A. Mulawarman; B. Adhiperdhana; I. Haryanto; M.G. Rahman; A. Novianto; J. Setiawan; Y. Sutadiwiria; M. Syaifudin; V.I. Rossa; R.R. Pratama
Berita Sedimentologi Vol 47, No 2 (2021)
Publisher : Ikatan Ahli Geologi Indonesia

The Java Island is an active volcanic arc that experiences several volcanism episodes, which gradually changes from South to North from the Late Oligocene to Pleistocene, following the subduction of the Australian plates underneath the Eurasian plates. During the Eocene, the southern and northern part of Java was connected as one passive margin system with the sediment supply mainly comes from Sundaland in the north. The compressional tectonics creates a flexural margin and a deep depression in the central axis of Java Island and acts as an ultimate deep-sea depocenter in the Neogene period. In contrast to the neighboring Northwest and Northeast Java Basins in the Northern edges of Java Island, the basin configuration in the East-West trending depression in median ranges of Java (from Bogor to Kendeng Troughs) are visually undetected by seismic due to the immense Quaternary volcanic eruption covers.Five focused window areas are selected for this study. A total of 1,893 Km sections, 584 rock samples, 1569 gravity and magnetic data, and 29 geochemical samples (rocks, oil, and gas samples) were acquired during the study. Geological fieldwork was focused on the stratigraphic unit composition and the observable features of deformation products from the outcrops. Due to the Paleogene deposit exposure scarcity in the Central-East Java area, the rock samples were also collected from the mud volcano ejected materials in the Sangiran Dome.The distinct subsurface configuration differences between Bogor and Kendeng Troughs are mainly in the tectonic basement involvement and the effect of the shortening on the formerly rift basin. Both Bogor and Kendeng Troughs are active petroleum systems that generate type II /III Kerogen typical of reduction zone organic material derived from transition to the shallow marine environment. The result suggests that these basins are secular from the neighboring basins with a native petroleum system specific to the palaeogeographical condition during the Paleogene to Neogene periods where the North Java systems (e.g., Northwest and Northeast Java Basin) was characterized by oxidized terrigenous type III Kerogen.

Geodiversity of Ciletuh-Palabuhanratu UNESCO Global Geopark, Sukabumi, West Java Nugraha Ardiansyah; Katon Sena Aji Nugraha; Rinaldi Ikhram
Berita Sedimentologi Vol 44, No 1 (2019)
Publisher : Ikatan Ahli Geologi Indonesia

Ciletuh-Palabuhanratu UNESCO Global Geopark (CPUGG) is located in the southwest of Sukabumi Regency, West Java, Indonesia. It covers an area of 126,000 ha or 1260 km2. CPUGG has several rare geodiversity features that can be classified into the theme: “The subduction zone uplifted, Ancient magmatic zone shifting and fore arc evolution”. This paper presents a summary of geodiversity features within CPUGG, Data sources are to be found on CPUGG’s website and in the scientific publications in the references. Within CPUGG 24 geosites contain one or more objects. All are of local, national, and international value. In addition, each geosite has also applications in scientific research, educational and touristic value or both. The geosites are: Cisolok Geyser (the only geyser in Indonesia), the Mega Amphitheatre (the Biggest Natural Amphitheatre in Indonesia), the Pasir Luhur Complex (Metamorphic Rocks) and the Gunung Beas Complex (Ophiolites). Some heritage sites contain rare rocks and fossils such as Ciletuh Formation (Batu Naga, Karang Daeu, etc.) the oldest sedimentary deposits in West Java.

Page 18 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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Minarwan

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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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