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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 5 Documents
 1 
Search results for , issue "Vol 16, No 1 (2001)" : 5 Documents clear
Radiolarian Research in Some Mesozoic Provinces in Indonesia Munasri Munasri
Berita Sedimentologi Vol 16, No 1 (2001)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4926.545 KB) | DOI: 10.51835/bsed.2001.16.1.242

Abstract

The single-celled radiolarians average between 20-200 mm in diameter. These planktonic animals range from Cambrian to Holocene. The name Radiolaria was first proposed by Muller (1858) for marine Sarcodina with radial symmetry to distinguish them from foraminifera. Ehrenberg (1838) proposed the name of Polysystina for fossil skeletons consisting of soild opaline processes. This group includes the two taxa Spumellaria (spherical) and Nassellaria (bell shaped).Although Radiolaria has been known since 19th century, but their fossils were only comprehensively treated for stratigraphic purpose within the last three decades. The new way of extraction of radiolarian-bearing rocks by using hydrofluoric acid solution; and the use of scanning electron microscope have also rapidly enhanced the development of radiolarian research.Recent studies of Radiolaria mostly emphasize their value to biostratigraphic correlation of marine sediments, as almost any initial report of the Deep-Sea Drilling Project has demonstrated.Radiolarians are particularly useful where other microfossils have suffered dissolution. They have also been used to indicate paleogeographic and tectonic change in ocean basin. For examples, radiolarians stratigraphy gave early support to the hypothesis of sea-floor spreading (Riedel, 1967); and paleogeographically distinct low- and high-paleolatitude faunas were described by Baumgartner (1993).
Seminar Report: SE Asia Deep-Water - Jakarta, May 2001 Berita Sedimentologi
Berita Sedimentologi Vol 16, No 1 (2001)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (520.509 KB) | DOI: 10.51835/bsed.2001.16.1.243

Abstract

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Foraminiferal Biostratigraphy of the Caversham Formation and Its Implication for Stratigraphy and Sedimentation Study, Northeast Otago, New Zealand Budianto Toha
Berita Sedimentologi Vol 16, No 1 (2001)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (11979.514 KB) | DOI: 10.51835/bsed.2001.16.1.239

Abstract

Foraminifera play an important role in stratigraphy and sedimentation analysis of the Caversham Formation. Foraminiferal biostratigraphy has allowed definition of the stratigraphic relationship between three sections studied, i.e. Puketeraki, Karitane Peninsula, and Matanaka Farm respectively. Additionally, foraminiferal assemblages satisfactorily determined New Zealand Stages and Substages of the Otaian and Altonian Stages of the lower Miocene (Burdigalian) age, as well as the depositional environment. Paleoecology of some particular foraminifera (e.g. Globoquadrina dehiscens and Ehrenbergina marwicki) has been utilized successfully to examine the depositional process.
Calcareous Nannoplankton and Planktonic Foraminifera from the Neogene Offshore Northwest Borneo Shirley E. van Heck
Berita Sedimentologi Vol 16, No 1 (2001)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7801.576 KB) | DOI: 10.51835/bsed.2001.16.1.240

Abstract

The sediments penetrated by hydrocarbon wells offshore NW Borneo consist mainly of Neogene clastics. Sedimentation rates are very high, resulting in a demand for high-resolution stratigraphy. As a result of often unfavorable environments and poor preservation, age diagnostic planktonic foraminifera and calcareous nannofossils are rare or absent in many wells. Although deepwater deposits are relatively rich in planktonics, compared to other areas the yield and preservation are poor.This paper describes the sequence of events (first and last occurrences) commonly encountered offshore NW Borneo, with indications of the reliability of the observed events.
Neogene Dinoflagellate Cysts from A Deep Water Wel, Offshore Sabah, Northern Borneo Huibert van den Brink
Berita Sedimentologi Vol 16, No 1 (2001)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3739.084 KB) | DOI: 10.51835/bsed.2001.16.1.241

Abstract

A research project is carried out with the objective to establish a dinoflagellate cyst biozonation for deep water wells drilled offshore Sabah and Brunei, envisaged to complement the biozonations based on nannoplankton, foraminifera and pollen. Ditch cutting samples from a pilot well have been analyzed for dinoflagellate cyst only, resulting in a list of FDO's, which could contain stratigraphic value: Hystrichokolpoma rigaudiae and Hystrichokolpoma okinawainum at 3150'. Operculodinium sp. A at 3840', Dapsilidinium pastielsii at 4140' and Lingulodinium pycnospinosum at 4950' within the Pliocene section; Selenopemphix brevispinosa Head et al. 1989 subsp. brevispinosa at 5760', consistent occurrence of Achomosphaera sp. B at 5760' and Systematophora placacantha at 6495' within the Upper Miocene section. The correlation potential should be checked in a follow-up well.

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