Geological Structures and Tectonic Reconstruction of Luwuk, East Sulawesi

Husein, Salahuddin; Novian, Moch. Indra; Barianto, Didit Hadi

doi:10.29118/ipa.0.14.g.137

Cited by 9 publications

(10 citation statements)

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“…The youngest sediment which have suffered deformations shown by disordered age sequence is Pliocene in age (N20-21). This indicate that the thrusting associated with the tectonic event in studied section was still took place after N20-21, probably at N22 (Villeneuve et al, 2000;Husein et al, 2014).…”

Section: Thrust Fault Identificationmentioning

confidence: 66%

“…The allochthonous sequence of ESO comprised of gabbro, basalt, serpentinite, dolerite, peridotite, and minor of phyllite and schist, and was dated to be ranged from Middle Cretaceous to Late Oligocene (Rusmana et al, 1993;Kadarusman et al, 2004;Husein et al, 2014).…”

Section: Stratigraphymentioning

confidence: 99%

“…Larger foraminifera analysis of the Salodik Group from Poh locality give age of middle Lutetian to Bartonian (zones Ta3 Tb), Middle Eocene (Renema et al, 2002). The Salodik and Poh Formations is dated Early Eocene to Middle Miocene in age (Husein et al, 2014). Depositional environment of Salodik Formation varied from reef to shallow marine whilst Poh Formation was deposited in lagoon and neritic to bathyal setting (Husein et al, 2014).…”

mentioning

confidence: 99%

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Age and Paleobathymetry of Salodik Group in PohPagimana section, East Arm of Sulawesi Based on Foraminiferal Assemblages

Fakhruddin¹,

Kurniadi²

2019

J. Geoscience Eng. Environ. Technol.

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Planktonic and benthic foraminiferal assemblages were used for age and paleobathymetry analysis of outcropping carbonate succession of the Salodik Group in Poh–Pagimana section, East Arm of Sulawesi. Twenty spot samples of carbonate rocks were collected from cut slope along the road between Poh and Pagimana. Age analysis conducted for each sample by its planktonic foraminifera assemblages and group into their age interval. The age range from Early Eocene to Pliocene. Benthic foraminiferal assemblages indicate paleobathymetry ranging from middle shelf to upper bathyal settings. Age analysis of the studied section show an older sediments (Early–Middle Eocene) overlie younger sediment (Early Miocene). This is interpreted as the evidence of thrust fault in the Poh–Pagimana section as part of thrust sheets of Batui thrust complex which imbricated on deformation zone. The youngest sediment which have suffered deformations shown by disordered age sequence is Pliocene in age (N20-21). The Eocene to Pliocene carbonate succession in the studied section was deposited relatively in the more basinward position compared to the carbonate-dominated sediments in the Tomori area which was deposited in the more landward position.

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Section: Thrust Fault Identificationmentioning

confidence: 66%

Section: Stratigraphymentioning

confidence: 99%

mentioning

confidence: 99%

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Age and Paleobathymetry of Salodik Group in PohPagimana section, East Arm of Sulawesi Based on Foraminiferal Assemblages

Fakhruddin¹,

Kurniadi²

2019

J. Geoscience Eng. Environ. Technol.

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“…The ophiolites of eastern Sulawesi are Late Cretaceous-Eocene in age and were displaced during the Oligocene-Miocene period by the Sula Spurs collision (Parkinson, 1998). The ophiolite was displaced along a back-arc basin shear fault (Monnier et al, 1995) with an obduction mechanism (Husein et al, 2014). The ophiolite sequence consists of peridotite cumulates, microgabbro, sheeted dolerite, and MORB basaltic (Kadarusman et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Petrochemistry of Ultramafic Rock in Baula - Pomalaa Ophiolite Complex, Southeast Sulawesi, Indonesia

Cendrajaya,

Juarsan,

Masri

et al. 2024

J. Geoscience Eng. Environ. Technol.

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Baula and Pomalaa Ophiolitic Complexes are part of East Sulawesi Ophiolite (ESO). The ultramafic rocks in the Baula and Pomalaa Ophiolite Complex mainly is peridotite and consist of harzburgite, lherzolite and olivine websterite, mostly serpentinized. Chemical and petrological research has focused on minerals, such as olivine, pyroxene, and spinel. This study examines the tectonic setting and temperature of ultramafic rock formation. Twelve ultramafic rock samples were examined using geothermometers made of pyroxene, petrographic examination, and coexisting olivine and spinel analyses. SEM and petrographic analysis of pyroxene lamellae and mylonite-ultramylonite structures allowed for the measurement of the geothermometer of ultramafic rocks. Using SEM-EDS, the coexistence of olivine and spinel was analyzed to determine the type of ultramafic tectonic setting. In the coexistence of olivine and spinel, olivine and spinel oxide compounds as tectonic setting markers in the form of Fo and Cr# values. Ultramafic rocks have different temperature levels, based on pyroxene thermometer, and the first one starts at a high temperature of 1000-1200ºC. It is characterized by thin, elongated augite lamellae. Instead, large lamellae characterize augite at medium temperatures (800–1000ºC). Irregular, anhedral, and broader forms of enstatite lamellae are typical of low temperatures (500–800ºC). Different generations of exsolution lamellae indicate that magma cooling was gradual. The distribution of #Fo ranged from 0.87 to 0.92, and Cr# values ranged from 0.13-0.19. According to coexisting olivine and spinel analysis. On the Olivine-Spinel Mantle Array (OSMA), the Fo and Cr# plot indicates that the peridotites tectonic setting was from the ocean floor and the magmatism was from MORB (Mid Oceanic Ridge Basalt). The Al2O3 vs. TiO2 pattern in spinel lherzolite also similar with Ampana and Kabaena peridotites magmatism.

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“…The Banggai Basin is located in the Eastern Part of Sulawesi Island [1]. This research has reservoir targets in Minahaki Formation and Tomori Formation those are carbonate rocks with high level of heterogeneity which have been proven to be hydrocarbon producers [2].…”

Section: Introductionmentioning

confidence: 99%

Carbonate Reservoir Characterization Based on Rock Type Analysis in Minahaki Formation and Tomori Formation, "HK" Field, Banggai Basin

Khairi

Burhannudinnur

Herdiansyah

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The research area is located in the Banggai Basin, Central Sulawesi, which part of the Eastern Arm of Sulawesi Island that originated from the collision between Banggai - Sula Microcontinent and West Arm Volcanic Arc from Sulawesi Island. This research has reservoir target in Minahaki Formation and Tomori Formation those are carbonate rocks. The problem limitation of this research is to characterize carbonate reservoir based on the distribution of rock types. The intention of this research is to analyze carbonate reservoirs with petrophysical properties and analyze reservoir characterization based on rock type distribution, while the purpose is determine the petrophysical property values of the Minahaki Formation and Tomori Formation, then determine the distribution of rock types for characterizing the reservoir rocks. The research methods begin with literature study, data collection, and data analysis. The results of the petrophysical analysis and pay zone in Minahaki Formation obtained an average: net pay thickness is 359.5 feet – 398.5 feet, vshale 23.55% - 34.48%, PHIT 13.33% - 22.84%, PHIE 9.9% - 16.89%, Sw 61.23% - 76.95%, and permeability 610.5 mD – 1360.1 mD. Meanwhile, Tomori Formation obtained an average: net pay thickness is 52.5 feet – 679 feet, vshale 16.53% - 34.7%, PHIT 3.5% - 7.87%, PHIE 2.77% - 6.09%, Sw 26.01% - 42.97%, and permeability 39 mD – 161.9 mD. There are six rock type distribution in the research area those are rock type 1 is ≤ 0.245 micrometers, rock type 2 is 0.314 – 0.48 micrometers, rock type 3 is 0.5 – 0.965 micrometers, rock type 4 is 1.04 – 2.35 micrometers, rock type 5 is 2.36 – 15.08 micrometers, and rock type 6 is 19.66 – 78.82 micrometers.

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Geological Structures and Tectonic Reconstruction of Luwuk, East Sulawesi

Cited by 9 publications

References 0 publications

Age and Paleobathymetry of Salodik Group in PohPagimana section, East Arm of Sulawesi Based on Foraminiferal Assemblages

Age and Paleobathymetry of Salodik Group in PohPagimana section, East Arm of Sulawesi Based on Foraminiferal Assemblages

Petrochemistry of Ultramafic Rock in Baula - Pomalaa Ophiolite Complex, Southeast Sulawesi, Indonesia

Carbonate Reservoir Characterization Based on Rock Type Analysis in Minahaki Formation and Tomori Formation, "HK" Field, Banggai Basin

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