Sediment compaction and pore pressure prediction in deepwater basin of the South China Sea: Estimation from ODP and IODP drilling well data

2018 ◽  
Vol 17 (1) ◽  
pp. 25-34 ◽  
Author(s):  
Yangbing Xie ◽  
Tuoyu Wu ◽  
Jin Sun ◽  
Hanyu Zhang ◽  
Jiliang Wang ◽  
...  
Keyword(s):  
South China Sea ◽  
Pore Pressure ◽  
South China ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Sediment Compaction ◽  
Pore Pressure Prediction ◽  
Deepwater Basin ◽  
Well Data

scholarly journals Eocene Sediments in the South China Sea, precursor deposits of the Oligocene expansion?

2021 ◽  
Vol 47 (2) ◽  
pp. 1-24
Author(s):  
Franz L. Kessler ◽  
John Jong ◽  
Mazlan Madon
Keyword(s):  
South China Sea ◽  
South China ◽  
The South China Sea ◽  
Petroleum Exploration ◽  
The South ◽  
Shallow Marine ◽  
China Sea ◽  
Marine Deposits ◽  
Stratigraphic Record ◽  
Well Data

The stratigraphic record of Eocene in the Malaysian waters of the South China Sea is scarce; the few deep petroleum exploration wells and outcrops are located on the fringes of the SCS. Yet, despite the paucity of data we observe a variety of sediments that cover the range from fluviatile to (at least) neritic marine deposits. Whilst fluvial deposits dominate the Western Rim (Penyu, Malay basins), the Southern Rim (Sarawak) is characterized by deposits of a narrow and rapidly deepening shelf, with fluviatile, shallow marine clastics and carbonates passing seawards to outer shelf and neritic deposits. The proven record of the Eocene to-date is located in relatively small and deep sub-basins.  Possibly, the Eocene underlies additional areas of the SCS, but there is to-date no sufficient well data to offer further confirmation. The presence of Eocene strata on the margins of Sundaland is associated with an early phase of extensional and/or transpressional tectonism, probably acting as precursor movements related to the onset of rifting of the crust underlying the SCS.

scholarly journals The Sedimentary Record of Paleogene Sequences in Sarawak, Malaysia

2021 ◽  
Vol 47 (1) ◽  
pp. 33-56
Author(s):  
Franz L. Kessler ◽  
John Jong ◽  
Mazlan Madon
Keyword(s):  
South China Sea ◽  
South China ◽  
Late Eocene ◽  
Peninsular Malaysia ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Sedimentary Sequences ◽  
Depositional Settings ◽  
Well Data

In this paper, we compare the oldest Tertiary sedimentary sequences in the south ern margin of the South China Sea based on outcrop and well data along the Sarawak margin, northern Borneo. Paleogene rocks in Sarawak are present in three tectono stratigraphic zones and represent three depositional settings. Outcrops and deep exploration wells in the Miri Zone indicate shelfal clastics, carbonates, and clay dominated neritic sediments. In the Sibu Zone (Rajang Fold Thrust Belt), Late Cretaceous to Late Eocene deep marine clastic sediments indicate a shallowing upward of the depositional basin, which was later buried to great depths (?) and metamorphosed. In the Kuching Zone, the Kayan and Plat eau sandstones represent a fluvial dominated non marine depositional setting. There are two major unconformities within the Paleogene of Sarawak: the Rajang Unconformity, dated as approximatively 37 Ma, and the younger near Top Eocene (a.k.a. Base Oligocen e) unconformity of 33.7 Ma. The likely presence of Eocene strata in the margins of Sundaland is associated with an early phase of regional extensional tectonism, which was also observed in the Penyu and Malay basins, offshore Peninsular Malaysia, and is probably related to the onset of rifting of the South China Sea continental crust.

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