From normal to oblique subduction: Tectonic relationships between Java and Sumatra

Malod, J.; Karta, K.; Beslier, Marie‐Odile; Zen, M. T.

doi:10.1016/0743-9547(95)00023-2

Cited by 82 publications

(56 citation statements)

References 13 publications

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“…Karena beberapa penelitian yang telah dilakukan terdahulu menunjukkan pergerakan yang makin kecil di selatan Sumatera, maka ada beberapa penulis yang memperkirakan terhentinya Sesar Sumatera di ujung pulau Sumatera. Bahkan Malod et al (1995) mengusulkan adanya hubungan antara Sesar Sumatera dengan Sesar Cimandiri. Hal tersebut sulit diterima mengingat sesar Cimandiri memiliki sifat yang berbeda (sesar geser mengiri, Dardji et al, 1994).…”

Section: Diskusiunclassified

Perkembangan Tektonik Daerah Busur Muka Selat Sunda dan Hubungannya dengan Zona Sesar Sumatera

Handayani¹,

Harjono²

2008

J.Ris.Geo.Tam

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Section: Diskusiunclassified

Perkembangan Tektonik Daerah Busur Muka Selat Sunda dan Hubungannya dengan Zona Sesar Sumatera

Handayani¹,

Harjono²

2008

J.Ris.Geo.Tam

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“…van Bemmelen, 1949;Sudjatmiko, 1972;Abidin et al, 2009;Supartoyo et al, 2013). Several previous studies suggested that the Cimandiri Fault Zone was the eastern boundary of the Sunda Strait transition zone, where tectonic characteristics changed from the implication of the oblique subduction along Sumatra to that of the normal subduction along Java (Pramumijoyo and Sebrier, 1991;Malod et al, 1995;Susilohadi et al, 2005). Furthermore, Malod et al (1995) suggested that Cimandiri Fault Zone was extended to offshore and connected to Sumatra Fault Zone in a forearc region and formed a conjugate dextral strike-slip fault.…”

Section: Introductionmentioning

confidence: 98%

“…Several previous studies suggested that the Cimandiri Fault Zone was the eastern boundary of the Sunda Strait transition zone, where tectonic characteristics changed from the implication of the oblique subduction along Sumatra to that of the normal subduction along Java (Pramumijoyo and Sebrier, 1991;Malod et al, 1995;Susilohadi et al, 2005). Furthermore, Malod et al (1995) suggested that Cimandiri Fault Zone was extended to offshore and connected to Sumatra Fault Zone in a forearc region and formed a conjugate dextral strike-slip fault. The argument was rather weak since several offshore seimic reflection surveys indicated that more complex structures existed in the Sunda Strait forearc region (Kopp et al, 2002;Susilohadi et al, 2005).…”

Section: Introductionmentioning

confidence: 98%

Audio-Magnetotelluric Modeling of Cimandiri Fault Zone at Cibeber, Cianjur

Handayani

Maryati

Kamtono

et al. 2017

Indonesian J. Geosci.

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-The characteristic of Cimandiri Fault Zone has not been completely defined despite plenty of studies had already been accomplished. Therefore, an audio-magnetotelluric modeling was carried out. An audiomagnetotelluric survey was conducted at two parallel lines (N166 o E) that intersected Cimandiri Fault Zone in Cibeber area, Cianjur. The distance between those two lines was 4.5 km and each line consisted of twenty-one stations with the distance between stations was 500 m. From the acquired forty-two apparent resistivity curves, inversion was executed to obtain two models. The models indicate layers with resistivity value of > 1000 ohm.m at about 500 m depth at both lines, which are associated to the basement layer. Columns of low resistivity zones in about the middle of each model represent fault zones as the weak zones of the area, and both models displayed them slightly dip southward as thrust faults.

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“…The island of Sumatra is part of Sundaland located in the southwestern portion of SE Asian continent. The tectonic evolution of the region during Tertiary times has been discussed in many published works [1], [8]- [9]. The more recent overview of the development of Sundaland from the Late Palaeozoic to the Late Mesozoic has also been presented [10].…”

Section: General Geologymentioning

confidence: 99%

Geochemical Assessment of Late Paleogene Synrift Source Rocks in the South Sumatra Basin

Sutriyono¹

2016

geomate

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ABSTRACT:The potential of Late Paleogene synrift source rocks in generating hydrocarbons within the South Sumatra basin has been evaluated using geochemical and pyrolytic techniques. The samples were collected from the outcropping shales of different layers constituting the Upper Oligocene Talang Akar Formation. Results of TOC analysis reveal minor quantities of organic carbons, indicating poor to fair potential source rocks. The S2/S3 ratios indicate two apparent kerogen types. The majority of the samples is type III kerogen; however, there appears minor type IV kerogen, implying the oxydized organic matter and no expulsion. The S1+S2 measurement of all the pyrolysed rocks, except one sample LP 12A, yields less than 1 mg HC/g rock, supporting the proposed scenario of little potential to generate hydrocarbons. Evaluation of hydrogen and oxygen indices confirms a gas prone source, but all the shales analyzed, disregarding one sample LP 18, provide a direct evidence that the rock section is immature to early mature to expel oil. Important notes can be made that the early stage of organic maturation might have occurred due to heating, as a result of deeper burial during Miocene time prior to the subsequent uplift in response to the Plio-Pleistocene orogeny.

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From normal to oblique subduction: Tectonic relationships between Java and Sumatra

Cited by 82 publications

References 13 publications

Perkembangan Tektonik Daerah Busur Muka Selat Sunda dan Hubungannya dengan Zona Sesar Sumatera

Perkembangan Tektonik Daerah Busur Muka Selat Sunda dan Hubungannya dengan Zona Sesar Sumatera

Audio-Magnetotelluric Modeling of Cimandiri Fault Zone at Cibeber, Cianjur

Geochemical Assessment of Late Paleogene Synrift Source Rocks in the South Sumatra Basin

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