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Herman Darman

Indogeo Social Enterprise

Author-ID : 5762834

Earth & Planetary Sciences

Published : 4 Documents Claim Missing Document

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The Paleogene of East Borneo and its Facies Distribution Herman Darman
Berita Sedimentologi Vol 37, No 1 (2017)
Publisher : Ikatan Ahli Geologi Indonesia

Paleogene age rocks are exposed over about 40% of Borneo island, mainly in the central or core part. The geologic map shows that more than half of those Paleogene exposures are grouped as a melange unit and the rest are a mix of sediments and meta-sediments. The majority of the melange unit is exposed in Malaysian Sabah and Sarawak. The Paleogene sediments are exposed more in the Indonesian (Kalimantan) side.Within the sedimentary basins around Borneo, the Paleogene interval lies buried deep and is poorly understood. Seismic images covering the Paleogene interval are poor and the number of Paleogene well penetrations is limited. Most well penetrations stopped within the Neogene interval only, where significant hydrocarbon accumulations have been found.Several authors have provided a regional overview of the basins in East Borneo, namely: Barito, Kutei and Tarakan (e.g. Satyana et al., 1999; Darman and Sidi (eds.) 2000 and Netherwood, 2000). Recently the Paleogene in East Kalimantan became a petroleum exploration target (Saller and Vijaya, 2002; Satyana and Biantoro, 1996 and Guritno and Chambers, 1999), unfortunately no significant accumulations have yet been found.This short article summarizes the distribution of Paleogene rocks in the east of Borneo Island based on recent exploration data. A series of proposed paleogeographic maps for the Eocene and Oligocene sections are prepared based on these recent data and understanding. These maps are aimed to facilitate discussions and set up a starting point for further work in the future.

Indonesian Stratigraphic Nomenclature revision: The first progress report Herman Darman; Dwandari Ralanarko; Sugeng Sapto Surjono
Berita Sedimentologi Vol 47, No 2 (2021)
Publisher : Ikatan Ahli Geologi Indonesia

A team was formed by the Indonesian Association of Geologist (IAGI) in early 2021 to revisit the Indonesian Stratigraphic Nomenclature which was issued in 1996. After 25 years many experts find that the document needs to be updated. The team is a mix of geologists with both academic and industry background. Several representatives from the Geological Agency who are involved in the Stratigraphic Lexicon document were also invited in the discussion. The team meeting was set on a regular basis to evaluate the existing nomenclature and look on areas for improvement. In each meeting the team will discuss a certain section of the nomenclature document. A three years work programme was set and reported on this article. In the first year the team will investigate areas for improvement, followed by revising necessary content in the second year. Implementation and promoting the nomenclature are planned for the third year.This short communication aims to engage a wider community on the process in revisiting the Indonesian Stratigraphic Nomenclature. Several examples of discussion topics in the meetings were included in this article. Readers will see potential areas for improvement and the team are open for suggestions.

Geological Features Observations in Eastern Indonesia Based on Selected P3GL Seismic Data: A Report from FOSI-P3GL Seminar, Cirebon, January 31, 2018 Herman Darman; Ricky Andrian Tampubolon; Mellinda Arisandy
Berita Sedimentologi Vol 40, No 1 (2018)
Publisher : Ikatan Ahli Geologi Indonesia

On January 31st, 2018, FOSI (Indonesian Sedimentologists Forum) organized a one day seminar in Cirebon (West Java), hosted by the Marine Geological Institute of Indonesia (or P3GL: Pusat Penelitian dan Pengembangan Geologi Kelautan). P3GL is a government institution which operates research vessels called Geomarin III. Their surveys typically include seismic acquisition, magnetic data acquisition and seafloor sediment sampling in Indonesian water. The seminar was aimed to provide an overview of their data to the geoscience community, especially those in the petroleum industry as the data may help petroleum exploration activities in Eastern Indonesia. This article focuses on selected seismic data which were presented during the seminar.

Sedimentary Basins of Indonesia: Outline and Thickness Variation Understanding Herman Darman; Doddy Yuliong B.A.
Berita Sedimentologi Vol 45, No 1 (2020)
Publisher : Ikatan Ahli Geologi Indonesia

Offshore petroleum exploration in Indonesia began in late 1960’s and thereafter a significant number of seismic data sets were acquired. Based on these data, several basin outline maps were generated such as those published by Hamilton (1974), BEICIP FRANLAP (1992), and Sujanto (1997). Based on these data sets, 60 sedimentary basins were officially recognized by the Government of Indonesia (Sunarjanto et al., 2007 included in 2008 publication). The outlines of the basins were used as a reference by government officials and the petroleum industry. Recently, the Geological Agency published a map which shows 128 sedimentary basin outlines in Indonesia. Unfortunately, these maps were not accompanied with supporting subsurface data.The understanding of those sedimentary basins is very important for petroleum exploration, as they are basically the places to find hydrocarbons. Petroleum potential within a basin is related to its sediment accumulation and tectonic history. Critical petroleum system elements such as source rocks, reservoir and seal mainly comprise sedimentary rocks. The order of deposition, quantity of sediments and basin history will control the effectiveness and quantity of hydrocarbon generation in a particular basin.This article will go through the history of various basin outline maps and aim to provide additional information, such as basement depth, to give further detail on the basins in Indonesia. There are some detailed maps which show the distribution of oil and gas fields, which are obviously related to sediment thickness.

Co-Authors Doddy Yuliong B.A. Dwandari Ralanarko Mellinda Arisandy Ricky Andrian Tampubolon Sugeng Sapto Surjono

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