Evolution of the South China Sea and monsoon history revealed in deep-sea records

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doi: 10.1360/03wd0156
Author(s): Wang Pinxian; Jian Zhimin; Zhao Quanhong; Li Qianyu; Wang Rujian; Liu Zhifei; Wu Guoxuan; Shao Lei; Wang Jiliang; Huang Baoqi; Fang Dianyong; Tian Jun; Li Jianru; Li Xianhua; Wei Gangjian; Sun Xiangjun; Luo Yunli; Su Xin; Mao Shaozhi; Chen Muhong
Author Affiliation(s): Primary:
Tongji University, Laboratory of Marine Geology, Shanghai, China
Other:
Chinese Academy of Sciences, China
China University of Geosciences, China
Volume Title: Chinese Science Bulletin
Source: Chinese Science Bulletin, 48(23), p.2549-2561. Publisher: Science Press, Beijing, China. ISSN: 1001-6538
Note: In English. 53 refs.; illus., incl. charts
Summary: As the third summary report of ODP Leg 184 to the South China Sea (SCS), this paper discusses the evolution of the East Asian monsoon and the SCS basin. A multi-proxy approach, involving geochemistry, micropaleontology, pollen and other analyses, was adopted for reconstructing the evolutionary history of the East Asian monsoon, which was characterized by a series of paleo-climate events especially at 8, 3.2, 2.2 and 0.4 Ma. The new record indicates similar stages in the development of the East and South Asian monsoons, with an enhanced winter monsoon over East Asia being the major difference. The rich spectrums of monsoon variability from the southern SCS also reveal other characteristic features of the low latitude ocean. Evidence for the evolution of the SCS includes the hemipelagic Oligocene sediments, implying the existence of deep water environments during the early seafloor spreading stage of the SCS basin. The four major unconformities and some remarkable diagenetic features in upper Oligocene deposits indicate the strongest tectonic events in the region. From a careful comparison of lithologies and sedimentation rates, we conclude that the prominent differences in sedimentary environments between the southern and northern SCS were established only by ∼3 Ma.
Year of Publication: 2003
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Cenozoic; Deep-sea environment; Leg 184; Lithostratigraphy; Marine environment; Marine sediments; Monsoons; Neogene; North Pacific; Northwest Pacific; Ocean Drilling Program; Oligocene; Pacific Ocean; Paleo-oceanography; Paleoclimatology; Paleogene; Provenance; Quaternary; Sediment transport; Sediments; South China Sea; Tertiary; Unconformities; West Pacific; Wind transport
Coordinates: N092143 N092143 E1131707 E1131707
Record ID: 2004046078
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