Herman Darman
Brunei Shell Petroleum

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Common Trace Fossils of the Deltaic and Turbidite Outcrops in Kutei Basin, East Kalimantan: A Field Note Herman Darman
Berita Sedimentologi Vol 19, No 1 (2004)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3190.284 KB) | DOI: 10.51835/bsed.2004.19.1.223

Abstract

The Kutei Basin is dominantly clastic Tertiary basin bounded by basement uplifts in the north, west and east. The basin is open towards the Makassar Strait in the east. The Paleogene sections of the basin were outcropped at the basin margin. In Muara Wahau area in the northern part of the basin, this section is dominated by turbidites with slump features. High variety and low quantity of trace fossils are found in the thin-bedded turbidites, mostly grazing structures and the assemblage suggest Nereites ichnofacies. The trace fossil associations suggest ocean basin environment of deposition and the biostratigraphic analysis indicates bathyal to abyssal zone. At the centre of the basin the Neogene deltaic sections cropped well in Samarinda area. there is high quantity of trace fossils but low in variety. Dwelling vertical burrows of Skolithos ichnofacies are dominant in this section. The trace fossil association suggests tidal zone with inner to outer neritic biostratigraphic environment.
Seismic Expression of Shelf Breaks: Examples from Borneo/Kalimantan Basins Herman Darman
Berita Sedimentologi Vol 18, No 1 (2003)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3045.982 KB) | DOI: 10.51835/bsed.2003.18.1.229

Abstract

Shelf break is a physiographic province in a basin defined by a change in dip from the shelf (dipping less than 1:1000 landward of the shelf edge) to the slope (dipping more than 1:40 seaward of the shelf edge). Vanney and Stanley (1983) described it is a point of the first major change in gradient at the outermost edge of the shelf, and its depth, distance from shore and configuration are highly variable. The shelf break is a distinct, critical interface of continental margins, which delineates the major physiographic boundary between two major submarine provinces, shelf and slope.Clinoform features and accordingly shelf breaks are expressed well in some seismic sections in the Tertiary basins surrounding Borneo or Kalimantan Island. Some seismic examples are taken from offshore Kutai, Tarakan, Sandakan, and NW Borneo basins. The depositional environments of the clastic systems of these basins range from fluvial to deepwater environment.
Turbidite Plays of Indonesia: An Overview Herman Darman
Berita Sedimentologi Vol 15, No 1 (2001)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3632.632 KB) | DOI: 10.51835/bsed.2001.15.1.246

Abstract

In the last decade significant advances in geologic understanding and exploration technology in Indonesia continue to reduce the risks associated with exploration and development in turbidite plays. New plays are defined based on recently acquired seismic and well data. Turbidite is becoming a very important play in Sumatra, Kalimantan, Java, and Irian.This paper will give a summary of the latest development on the geological concepts of the deep-water successions in Indonesia based on exploration data.
Sedimentology of Coal Conglomerate Deposits within Channel Facies in Samarinda Region, East Kalimantan Herman Darman; Yahdi Zaim
Berita Sedimentologi Vol 17, No 1 (2002)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1604.159 KB) | DOI: 10.51835/bsed.2002.17.1.237

Abstract

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