Structural Control on Sediment Distribution in Offshore Brunei Darussalam, South China Sea

Darman, Herman; Damit, Abdul Razak

doi:10.29118/ipa.178.03.g.145

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…During the Upper Neogene, a transgressive phase of rising sea-levels occurred in Sarawak (Hutchison, 2005). Sarawak and north Sabah experienced a phase of deformation triggered by trough basement uplifts and wrench faulting during the Pliocene (Darman and Damit, 2003). Evidences of folding and thrusting as a result of these tectonic stages have been observed offshore by previous works (Cullen, 2010;Menier et al, 2014).…”

Section: Effects Of Crustal Shorteningmentioning

confidence: 71%

“…Since Borneo is considered to have fully emerged at 5 Ma and the palaeo-shoreline was approximately where it is in the present-day (Hall, 2002), peneplanation is highly unlikely. Indeed, there was intense folding and uplift during end of Miocene times (Darman and Damit, 2003), and adjacent peaks within the same basin have elevations of~2400 m (Fig. 1) which would require uplift rates higher than 0.22 mm y −1 .…”

Section: Estimation Of Uplift Ratesmentioning

confidence: 99%

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Active tectonic deformation along rejuvenated faults in tropical Borneo: Inferences obtained from tectono-geomorphic evaluation

et al. 2016

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Section: Effects Of Crustal Shorteningmentioning

confidence: 71%

Section: Estimation Of Uplift Ratesmentioning

confidence: 99%

Active tectonic deformation along rejuvenated faults in tropical Borneo: Inferences obtained from tectono-geomorphic evaluation

et al. 2016

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“…The diapiric mobile shale is seen to be sealed under the anticline structures in the southern region of Luconia Province and believed to be originated from Lower Miocene (Cycle II) Setup Shale. The anticline structures trapping diapiric mobile shale (Figure 8) in the near-shore Sarawak is very much alike to the structures seen in Ampa and Seria anticlines in offshore Brunei (Brunei Shell Petroleum, 1996;Darman and Damit, 2003;Morley et al, 2003;Morley et al, 2008). Meanwhile, in the North Luconia Province, the occurrence of mobile shale appears as injected pipe material form into diapiric shapes.…”

Section: Shale Diapir and Gas Cloudmentioning

confidence: 79%

The Succession of Upper Eocene- Upper Miocene Limestone Growth and Corresponding Tectonic Events in Luconia Shelf, Sarawak, Malaysia

et al. 2021

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Using high quality regional seismic lines, we evidence major structures resulting from successive phases of tectonic events that affected the Luconia shelf from the Upper Cretaceous to Pliocene. Each tectonic event (Classified as Event 1–Event 3) is associated with different episodes of limestone growth in Luconia Province. The successive limestone growths are used as markers in constraining the timing and style of tectonic deformation. The poly-stage closure of the Proto South China Sea (PSCS) from the Upper Cretaceous to Lower Miocene led to the formation of compressional structures in its southern portion (South PSCS) providing elevated topography for the growth of the oldest limestone found in this area during the Upper Eocene to Lower Oligocene (Event 1). Based on contrasting seismic reflectors, morphology, and depositional patterns, the offshore Upper Eocene-Lower Oligocene limestone growth is correlated to the onshore Engkabang-Karap limestone. The southern part of Luconia was subjected to a continuous compression until the Lower Miocene at a time where the northern side of the Luconia Province was experiencing subsidence due to the rifting of the South China Sea (Event 2). The compression in the south generated elevated anticlines, triggering the growth of the Upper Oligocene to Lower Miocene limestone. By the end of the rifting event in the Lower Miocene, tectonic quiescence had enabled widespread carbonate growth in Luconia from the Middle to Upper Miocene. Regional compression due to the major uplift of Borneo hinterland (Event 3) triggered paramount clastic influx (gravity tectonics) to the offshore perturbating the limestone reef growth in Luconia. The impact of these interrelated shortening and stretching phases led to major crustal thickness variations and a prominent tilt of the Luconia platform that may highlight intricate feedbacks at the transition from compression to extension. While the southern side of the Luconia’s crustal fragment was anchored into Borneo hinterland, crustal extension in the northern region of Luconia led to a hyper-stretched crust characterized by low angle detachment faults and highly rotated blocks rising the mantle to its shallowest.

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Deformation of Cenozoic basins of Borneo and West Sulawesi

Baillie¹,

Darman²,

Fraser³

Proceedings, Deepwater and Frontier Exploration in Asia &Amp;amp; Australasia Symposium

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Structural Control on Sediment Distribution in Offshore Brunei Darussalam, South China Sea

Cited by 3 publications

References 6 publications

Active tectonic deformation along rejuvenated faults in tropical Borneo: Inferences obtained from tectono-geomorphic evaluation

Active tectonic deformation along rejuvenated faults in tropical Borneo: Inferences obtained from tectono-geomorphic evaluation

The Succession of Upper Eocene- Upper Miocene Limestone Growth and Corresponding Tectonic Events in Luconia Shelf, Sarawak, Malaysia

Deformation of Cenozoic basins of Borneo and West Sulawesi

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