MESOZOIC TECTONIC COMPRESSION AND ITS GENESIS IN THE SEA AREA OF NANSHA

ZHU Rongwei; LIU Hailing; YAO YongJian; CUI Xiaojun; LI Yuhan; WANG Yin

doi:10.16562/j.cnki.0256-1492.2017.06.006

Marine Geology & Quaternary Geology > 2017 > 37(6): 57-64. > DOI: 10.16562/j.cnki.0256-1492.2017.06.006

ZHU Rongwei, LIU Hailing, YAO YongJian, CUI Xiaojun, LI Yuhan, WANG Yin. MESOZOIC TECTONIC COMPRESSION AND ITS GENESIS IN THE SEA AREA OF NANSHA[J]. Marine Geology & Quaternary Geology, 2017, 37(6): 57-64. DOI: 10.16562/j.cnki.0256-1492.2017.06.006

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MESOZOIC TECTONIC COMPRESSION AND ITS GENESIS IN THE SEA AREA OF NANSHA

1.
CAS Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
Guangzhou Marine Geological Survey, Guangzhou 510760, China
4.
Northeast Sichuan Gas production Plant, Sinopec Southwest Oil and Gas Branch, Langzhong Sichuan 637400, China

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Received Date: April 29, 2017
Revised Date: June 29, 2017

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Abstract

Abstract

The Mesozoic of the Nansha block of the southern South China Sea has suffered various degrees of compression in addition to a strong denudation by the end of Mesozoic. Multi-channel seismic data are interpreted to reveal the characteristics and genesis of the Mesozoic tectonic deformation. Tectonic restoration was conducted to remove the Cenozoic deformation and at the same time the Mesozoic tectonic compression ratios were calculated. Through them we found that there were two compressive stresses coming from opposite directions, one from S(S)E and another from N(N)W. The strength of the stresses decreased from the west to the east and from the north to the south. The variations in compression ratios may be related to the opening of the proto-South China Sea and the change in drifting rate of the Nansha block northward.
- Mesozoic,
- tectonic deformation,
- tectonic compression ratio,
- proto-South China Sea,
- Nansha waters

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References

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MESOZOIC TECTONIC COMPRESSION AND ITS GENESIS IN THE SEA AREA OF NANSHA