Crustal Structures of the Eastern Sundaland’s Rifts, Central Indonesia: Geophysical Constraints and Petroleum Implications

Satyana_2010_crust east

Halo!

This is a note about a paper presented in International Geosciences Conference and Exposition in Bali almost 3 years ago. This paper highlights the origin of crustal structures of Eastern Sundaland. Based on evaluation of available seismic, gravity, and magnetic data, the author proposed tectonic interpretation of the areas and the implications for petroleum accumulation.

Read abstract

Tectonics, Stratigraphy and Geochemistry of the Makassar Straits: Recent Updates from Exploring Offshore West Sulawesi, Opportunities and Risks

Satyana_2012_ipa_156

This is a review paper on the tectonics, stratigraphy  and geochemistry of West Sulawesi Offshore, Indonesia. This paper is presented at the 36th IPA meeting. The increase of exploration activity in West Sulawesi Offshore has enhanced our understanding but, it cannot instantly build a thorough knowledge of the petroleum geology of the area. There have been surprising results, both positive and negative, that were unexpected when compared with the prognoses for the wells drilled recently. It therefore appears that assessing the risk of both plays and prospects in this area is still difficult.

Read abstract

Welcome to our blog

Bumi_ino

Hi all! Welcome to our blog, Tektonesiana.

The name of Tektonesiana is derived from the word tectonics and Indonesia. Tektonesiana represents our ‘passion’ on tectonics of Indonesia.

We, Indonesian geologists who share the same interest, use this blog to post articles that represent our works. These articles have been presented in scientific meetings. Some of them also have been published in journals. We have many questions about tectonics of Indonesia, and we want to share them with you. Enjoy our blog!

View our list of publications

Central Java, Indonesia – a “Terra Incognita” in Petroleum Exploration: New Considerations on the Tectonic Evolution and Petroleum Implications

Satyana_2007_ipa_085

This is a title of an article that has been presented at the IPA Annual Convention and Exhibition 2007. This article reviews the tectonics of Central Java Indonesia. This area shows a conspicuous re-entrant or indentation of its coastline compared to those of the western and eastern parts of Java Island. This indentation is considered to express wrench segmentation of two major Paleogene strike-slip faults with opposing trends and slips are responsible for the indentation. The two faults are considered to cause significant geologic changes in Central Java.

Read abstract

Structural Style and Evolution of the Sumatran Forearc Basins

Mukti_2011_ipa

The interesting point of this article, which has been presented at INDONESIAN PETROLEUM ASSOCIATION 35th Annual Convention and Exhibition May 2011 is that the deep seismic reflection data acquired by Western Geco and CGGVeritas have provide new information for understanding the evolution Sumatran forearc basins.

Read abstract

Structural Reactivation and its Implication on Exploration Play: Case Study of JS-1 Ridge

Maulin_2012
This work has been presented at INDONESIAN PETROLEUM ASSOCIATION, Thirty-Sixth Annual Convention & Exhibition, May 2012. The authors of this article explained paleotectonic evaluation of the WMO area, and suggests another potential play other than Kujung Formation. Seismic interpretation with some attributes and also ant-track method are applied to strengthen the exploration concept. Another play that is quite interesting should be added to exploration in this area. Syn-rift play can be found in the western and eastern flank of JS-1 with Ngimbang Formation as the objective, whilst the post Kujung play can be emphasized on the flower structure pattern as an indication of wrench faulting. This wrench fault is responsible for tearing apart the Rancak and O.K. Formations during intra Miocene.

Read abstract

 

Structural evolution of backthrusting in the Mentawai Fault Zone, offshore Sumatran forearc

Mukti_2012_g3

This article presents the interpretation of newly acquired high-quality industry-standard deep seismic reflection and swath bathymetry data to provide insight into the structural style and evolution of the Mentawai Fault Zone (MFZ). The structural style, lateral distribution and kinematics of the fault zone has been discussed related the development of forearc high thrusts and accretionary wedge mechanics. The implication of this fault zone to the coseismic rupture during slip of the megathrust is also discussed.

Read abstract