cover
Article Per Year (5 Year)
All
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
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 6 Documents
 1 
Search results for , issue "Vol 24, No 1 (2012)" : 6 Documents clear
Ophiolite Obduction on Leti Island, as Described By Molengraaff and Brouwer (1915): Implications for Age and Genesis Of Metamorphic Complexes in the Outer Banda Arc, Eastern Indonesia van Gorsel, J.T.
Berita Sedimentologi Vol 24, No 1 (2012)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2379.018 KB) | DOI: 10.51835/bsed.2012.24.1.182

Abstract

Geology, rocks and fossils of Leti Island, NE of Timor, were described in great detail by Molengraaff et al. (1915). Folded Early-Middle Permian sediments and basic volcanics in the south of the island gradually become low-grade metamorphics to the North, with further increases in metamorphic grade towards a serpentinite massif in the north of the island. In today's plate tectonic terms this may be characterized as 'ophiolite obduction', i.e. metamorphism of continental crustal material in a subduction zone. The serpentinite massif is overlain by Latest Oligocene shallow marine limestone with reworked clasts and detritus of serpentinite and metamorphic rocks. These observations suggest that the age of the metamorphic-ophiolite complex on Leti island is post-Early Permian (and is therefore not Australian continental crust basement) and younger than latest Oligocene (i.e. too old to represent metamorphism connected with the Late Neogene Banda arc- NW Australian continent collision).Metamorphic complexes on nearby Timor and on small islands to the East may all have a similar origin, despite the wide range of published radiometric ages and proposed tectonic models (from Precambrian Australian continental basement to 'the world's youngest blueschist belt'). Many complexes are associated with ophiolitic rocks, overlie imbricated Permian-Triassic sediments and are overlain by an Upper Cretaceous- Lower Miocene 'Banda Terrane' succession (not always complete) that includes tropical carbonates, arc volcanics and unconformities, very similar to that of the Sundaland margin. These broad similarities suggest all or most of the metamorphic complexes may be parts of a single 'Timor-Tanimbar' metamorphic belt of Cretaceous age.If this interpretation of a single, extensive Cretaceous-age collisional/ subduction zone complex is correct, it follows that (1) this could not have taken place along the NW Australia passive margin, where it is today, and (2) if Permian-Triassic sediments and volcanics are indeed the protoliths of all metamorphic complexes, a microplate carrying these 'Gondwana sequence' sediments must already have separated from the Gondwana margin, probably in Jurassic time. This leads us back to the tectonic scenario that was prevalent around 1980 (Barber (1978, 1981, etc.), which shows most of Timor as a microcontinental sliver that rifted off the Sundaland margin in the Tertiary (should be ~Late Miocene-Pliocene time) during slab rollback/arc splitting that opened the South Banda Sea. It returned microcontinental material that had rifted off the Gondwana margin in the Jurassic ('Gondwana sequence'), then collided with the Sundaland margin in the Cretaceous, after which it developed its overprint of Late Cretaceous- Early Miocene arc volcanics, tropical carbonates, etc.
Seismic Expression of the Timor-Tanimbar, Eastern Indonesia Darman, Herman
Berita Sedimentologi Vol 24, No 1 (2012)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2009.235 KB) | DOI: 10.51835/bsed.2012.24.1.183

Abstract

The Timor-Tanimbar Trough is an oceanic trough, which is an eastern continuation of the Sunda Trench. It marks the boundary between Indo-Australian Plate's continental shelf and the Timor Plate in the north. The trough is located in the south of Timor Island and is called the Timor Trough with WSW to ENE orientation. Further east, the trough orientation changes to SW-NE and is called Tanimbar Trough.A number of seismic lines across Timor-Tanimbar Trough have recently been published by different authors in several publications. Five of those seismic lines which provided regional geological understanding of the southern part of Banda arc, are discussed in this paper. These seismic lines provide a better geological understanding of the area after Hamilton published regional seismic lines in 1979. In this paper, consistent stratigraphic nomenclature has been applied to these key seismic lines. This will help to understand the regional geological process in chronological order.From west to east, the coverage of the sections published in this article are as follow:Section 1: West part of Timor trough, published by Jones et al (2011);Section 2: East part of Timor trough to Australian Platform, published by Lee and Bawden (2011);Section 3: A regional older section, which provides a regional understanding of the tectonic in the area, is published by Hamilton (1979);Section 4: South of the Tanimbar trough, published by Carter at al. (2003);Section 5: A regional section across the northern part of Tanimbar trough published by Dinkelman et al. (2010), with details which is published by Roberts et al (2011).This article discusses the observations of these seismic lines, but the alternative interpretations are quite limited, for the lack of access to the original data. Seismic-to-well tie is not explained in the source of these seismic sections, and it will not be discussed in this paper.
Highlights and Implication of A Deep-Crustal Seismic Reflection Survey in the Arafura Sea Region Granath, James W.; Dinkelman, Menno G.; Christ-Stringer, Janice C.; Emmet, Peter A.
Berita Sedimentologi Vol 24, No 1 (2012)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4141.501 KB) | DOI: 10.51835/bsed.2012.24.1.184

Abstract

A regional 2-D reconnaissance seismic survey, ArafuraSPAN™, provideS pre-stack depth images down to 40 km, allowing new interpretations of the basement structure and its influence on the overlying sedimentary cover of at least seven geological provinces. In the Arafura Sea, the new data have revealed an enormous two-part Proterozoic supracrustal section comprised of a some 15+ km thick Arafura Basin and an underlying additional 15+ km McArthur Basin equivalents. The stratigraphic thicknesses of these rocks make up virtually the entire crust under the Arafura platform. Stratiform reflections are interpretable to a depth of over 30 km, an imaging first and a game changer in terms of understanding the regional geological framework. The best available interpretation of this section is that it represents a peri-cratonic large igneous province of Proterozoic age, preserved as virtually the entire crust. In the Banda Sea, structural relationships between the Tanimbar accretionary prism, the Weber Deep, and the platform suggest that the Weber Deep initiated as a forearc extensional event the severed the accretionary prism from its hard volcanic core, and then evolved into a major basin within the Banda Basin. The Seram thrust belt is shown to lie above a strike-slip system that separates the Banda microplate from the Bird's Head, and forms the plate boundary in that area.
Permian-Jurassic Palaeogeography of the SE Banda Arc Region Charlton, Tim
Berita Sedimentologi Vol 24, No 1 (2012)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1776.332 KB) | DOI: 10.51835/bsed.2012.24.1.180

Abstract

Palaeogeographic maps covering the southern and eastern sectors of the Banda forearc (Savu to the Kei islands, also including Timor and the Tanimbar islands) and adjacent parts of the northwest Australian continental margin are presented for the Early Permian, Middle-Late Permian, Early-Middle Triassic, Late Triassic, and Early, Middle and Late Jurassic. A series of palaeotectonic reconstructions from the Devonian to the mid-Tertiary show an interpretation of the sequential phases of rifting that dismembered northeastern Gondwanaland through this period. Three major phases of rifting are documented for the core region of the future Banda forearc, commencing in the Early Permian, Late Triassic and Middle/Late Jurassic. Each rift event is characterised palaeogeographically by high facies diversity, which is a consequence of strong differential vertical crustal movements at that time. The three rift phases are separated by two quieter tectonic intervals characterised palaeogeographically by low facies diversity (widespread development of marine shales) during phases of post-rift thermal subsidence.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3015.484 KB) | DOI: 10.51835/bsed.2012.24.1.185

Abstract

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.
Mud Volcano in Southeast Maluku: Evidence for Neotectonics in East Indonesia Zaim, Yahdi; Ernawan, Budi; Fachrizal, Fachrizal
Berita Sedimentologi Vol 24, No 1 (2012)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1768.913 KB) | DOI: 10.51835/bsed.2012.24.1.181

Abstract

Mud volcanoes are observed in S.E. Maluku, east Indonesia, in Babar, Tanimbar and in the Kai islands. They are active, show bubbles of flammable gases, mud flows and rock fragments, and except in the Kai Islands, are associated with melange complexes. They have also been reported to be present on Timor Island. The formation of active mud volcanoes in S.E. Maluku is closely related to the geology and tectonics of this region, and is due to subsurface overpressures forming liquefied shale that is extruded along thrust faults and fractured zones. The association of melange complexes and Quaternary fractured limestone terraces with mud volcanoes is closely related to the Quaternary and neotectonic activities in this region. Mud volcanism in this region is probably one of the main processes leading to the formation of chaotic deposits in the Quaternary in SE Maluku.

Page 1 of 1 | Total Record : 6

 1 

Filter by Year

2012 2012


Reset
Filter By Issues
All Issue Vol 51, No 1 (2025) Vol 50, No 1 (2024) Vol 49, No 3 (2024) Vol 49, No 2 (2023) Vol 49, No 1 (2023) Vol 48, No 1 (2022) Vol 47, No 3 (2021) Vol 47, No 2 (2021) Vol 47, No 1 (2021) Vol 46, No 1 (2020) Vol 45, No 1 (2020) Vol 44, No 1 (2019) Vol 43, No 1 (2019) Vol 42, No 1 (2019) Vol 41, No 1 (2018) Vol 40, No 1 (2018) Vol 39, No 1 (2017) Vol 38, No 1 (2017) Vol 37, No 1 (2017) Vol 36, No 1 (2016) Vol 35, No 1 (2016) Vol 34, No 1 (2016) Vol 33, No 1 (2015) Vol 32, No 1 (2015) Vol 31, No 1 (2014) Vol 30, No 1 (2014) Vol 29, No 1 (2014) Vol 28, No 1 (2013) Vol 27, No 1 (2013) Vol 26, No 1 (2013) Vol 25, No 1 (2012) Vol 24, No 1 (2012) Vol 23, No 1 (2012) Vol 22, No 1 (2011) Vol 21, No 1 (2011) Vol 20, No 1 (2011) Vol 19, No 1 (2004) Vol 18, No 1 (2003) Vol 17, No 1 (2002) Vol 16, No 1 (2001) Vol 15, No 1 (2001) Vol 14, No 1 (2000) Vol 13, No 1 (2000) Vol 12, No 1 (1999) Vol 10, No 1 (1998) Vol 9, No 1 (1998) Vol 8, No 1 (1998) Vol 7, No 1 (1998) Vol 6, No 1 (1997) Vol 5, No 1 (1997) Vol 4, No 1 (1997) Vol 3, No 1 (1996) Vol 2, No 1 (1996) Vol 1, No 1 (1996) More Issue