Cenozoic tectonic subsidence and its mechanism of the Malay Basin, southwest South China Sea

LIU Lu; SHI Xiaobin; ZHAO Peng; LIU Tangwei; ZHAO Junfeng

doi:10.16562/j.cnki.0256-1492.2023042601

2024 Vol. 44, No. 2

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Article navigation > Marine Geology & Quaternary Geology > 2024 > 44(2): 171-182

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LIU Lu, SHI Xiaobin, ZHAO Peng, LIU Tangwei, ZHAO Junfeng. Cenozoic tectonic subsidence and its mechanism of the Malay Basin, southwest South China Sea[J]. Marine Geology & Quaternary Geology, 2024, 44(2): 171-182. doi: 10.16562/j.cnki.0256-1492.2023042601

Citation:

LIU Lu, SHI Xiaobin, ZHAO Peng, LIU Tangwei, ZHAO Junfeng. Cenozoic tectonic subsidence and its mechanism of the Malay Basin, southwest South China Sea[J]. Marine Geology & Quaternary Geology, 2024, 44(2): 171-182. doi: 10.16562/j.cnki.0256-1492.2023042601

Cenozoic tectonic subsidence and its mechanism of the Malay Basin, southwest South China Sea

1.
Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 511458, China
2.
University of Chinese Academy of Science, Beijing 100049, China
3.
School of Science, East China University of Technology, Nanchang 330013, China

More Information

Corresponding author: SHI Xiaobin, xbshi@scsio.ac.cn

Received Date: 26 April 2023

Revised Date: 27 June 2023

Accepted Date: 27 June 2023

Publish Date: 28 April 2024

Abstract

Abstract

The southwestern part of the South China Sea (SCS) is one of the most complex tectonic regions of SCS. To further understand the tectonic evolution of the Malay Basin and the southwestern part of the SCS, we systematically rebuilt the tectonic subsidence history for 69 representative pseudo-wells based on recently published seismic and drilling data. Results show that the Cenozoic tectonic subsidence history could be divided into four stages including syn-rift rapid subsidence stage, early post-rift anomalous and rapid subsidence stage, middle post-rift slow subsidence stage, and late post-rift slow subsidence stage. Further analyses suggest that the Malay Basin is a rifted basin and later was superimposed by small-scale strike-slip action in its wings. The anomalous rapid tectonic subsidence in the early post-rift stage might be resulted from inelastic yield of the lithosphere caused by sedimentary loading.
- anomalous subsidence /
- tectonic evolution /
- tectonic inversion /
- Malay Basin

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References

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