Ocean drilling and major advances in marine geological and geophysical research of the South China Sea

Lin Jian; Li Jiabiao; Xu Yigang; Sun Zhen; Xia Shaohong; Huang Xiaolong; Xie Xinong; Li Chunfeng; Ding Weiwei; Zhou Zhiyuan; Zhang Fan; Luo Yiming

doi:10.3969/j.issn.0253-4193.2019.10.008

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Lin Jian，Li Jiabiao，Xu Yigang, et al. Ocean drilling and major advances in marine geological and geophysical research of the South China Sea[J]. Haiyang Xuebao，2019, 41(10)：125–140，doi:10.3969/j.issn.0253−4193.2019.10.008

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Ocean drilling and major advances in marine geological and geophysical research of the South China Sea

doi: 10.3969/j.issn.0253-4193.2019.10.008

Lin Jian^{1, 2
,},
Li Jiabiao³,
Xu Yigang⁴,
Sun Zhen^{1, 5},
Xia Shaohong^{1, 5},
Huang Xiaolong⁴,
Xie Xinong⁶,
Li Chunfeng⁷,
Ding Weiwei³,
Zhou Zhiyuan^{1, 5},
Zhang Fan^{1, 5},
Luo Yiming^{1, 5}

1.
Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
2.
Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
3.
Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
4.
State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
5.
Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China
6.
College of Marine Science and Technology, Chinese University of Geosciences, Wuhan 430074, China
7.
College of Ocean Sciences, Zhejiang University, Zhoushan 316021, China

Received Date: 2019-09-05
Rev Recd Date: 2019-09-16

Available Online: 2021-04-21

Publish Date: 2019-10-25

Abstract

Abstract

The South China Sea (SCS) is the largest marginal sea in the Western Pacific Ocean. Major advances in understanding SCS tectonic processes have been made in the last several decades, especially through the implementation of five international ocean drilling expeditions during 1999-2018 and the “South China Sea Deep” major research program of the National Natural Science Foundation of China (2011-2019). Critical data have been acquired and important scientific results have been obtained, which have changed our view of how the SCS marginal sea basin developed and evolved. Major progresses have been made in multiple aspects: (1) the SCS is proposed as a new type of “plate-edge rifting” model, which differs from the classic Atlantic-type “intra-plate rifting” model; (2) Ocean drilling obtained the SCS basement basalt samples for the first time, which together with the first deep-towed magnetic survey, enabled the determination of SCS basin ages and revealing that the SCS seafloor spreading propagated stepwise from east to west; (3) Magmatism appeared rapidly during thinning of lithosphere in the SCS northern margin, in sharp contrast to serpentinite exposure by relatively slow rifting of the Atlantic Ocean; (4) Magmatic activity is still significant after the cessation of SCS seafloor spreading, being controlled by multiple tectonic and mantle processes; (5) Geochemical evidence and geodynamic simulations show that the SCS magmatism is affected by the surrounding subduction zones. At present, marine geoscience research of the SCS is being extended to studies of its interaction with surrounding ocean basins. Through conducting large-scale research programs, building ocean drilling platform, and strengthening international collaboration, China’s contributions to marine geoscience research are expected to increase.
- South China Sea,
- IODP ocean drilling,
- marine geology and geophysics,
- tectonics and magmatism,
- continental breakup,
- seafloor spreading

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References(80)

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