Seismic stratigraphy of the central South China Sea basin and implications for neotectonics
| Online Access: |
Get full text doi: 10.1002/2014JB011686 |
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| Author(s): | Li Chunfeng; Li Jiabiao; Ding Weiwei; Franke, Dieter; Yao Yongjian; Shi Hesheng; Pang Xiong; Cao Ying; Lin, Jian; Kulhanek, Denise K.; Williams, Trevor; Bao, Rui; Briais, Anne; Brown, Elizabeth A.; Chen Yifeng; Clift, Peter D.; Colwell, Frederick S.; Dadd, Kelsie A.; Hernández-Almeida, Iván; Huang Xiaolong; Hyun, Sangmin; Jiang Tao; Koppers, Anthony A. P.; Li Qianyu; Liu Chuanlian; Liu Qingsong; Liu Zhifei; Nagai, Renata H.; Peleo-Alampay, Alyssa; Su Xin; Sun Zhen; Tejada, Maria Luisa G.; Hai Son Trinh; Yeh, Yi-Ching; Zhang Chuanlun; Zhang, Fan; Zhang Guoliang; Zhao Xixi |
| Author Affiliation(s): |
Primary: Tongji University, Laboratory of Marine Geology, Shanghai, China Other: State Oceanic Administration, China Federal Institute for Geosciences and Natural Resources, Germany Guangzhou Marine Geological Survey, China China National Offshore Oil Company, China Woods Hole Oceanographic Institution, United States Texas A&M University, United States Lamont-Doherty Earth Observatory, United States Swiss Federal Institute of Technology, Switzerland University of Toulouse, France University of South Florida, United States Chinese Academy of Sciences, Guangzhou Institute of Geochemistry, China Louisiana State University, United States Oregon State University, United States Macquarie University, Canada University of Bern, Switzerland Korea Institute of Ocean Science and Technology, South Korea China University of Geosciences, China Ministry of Natural Resources and Environment, Vietnam Taiwan Ocean Research Institute, Taiwan Chinese Academy of Sciences, Institute of Oceanology, China |
| Volume Title: | Journal of Geophysical Research: Solid Earth |
| Source: | Journal of Geophysical Research: Solid Earth, 120(3), p.1377-1399. Publisher: Wiley-Blackwell for American Geophysical Union, Washington, DC, United States. ISSN: 2169-9313 |
| Note: | In English. 36 refs.; illus., incl. 2 tables, sketch maps |
| Summary: | Coring/logging data and physical property measurements from International Ocean Discovery Program Expedition 349 are integrated with, and correlated to, reflection seismic data to map seismic sequence boundaries and facies of the central basin and neighboring regions of the South China Sea. First-order sequence boundaries are interpreted, which are Oligocene/Miocene, middle Miocene/late Miocene, Miocene/Pliocene, and Pliocene/Pleistocene boundaries. A characteristic early Pleistocene strong reflector is also identified, which marks the top of extensive carbonate-rich deposition in the southern East and Southwest Subbasins. The fossil spreading ridge and the boundary between the East and Southwest Subbasins acted as major sedimentary barriers, across which seismic facies changes sharply and cannot be easily correlated. The sharp seismic facies change along the Miocene-Pliocene boundary indicates that a dramatic regional tectonostratigraphic event occurred at about 5 Ma, coeval with the onsets of uplift of Taiwan and accelerated subsidence and transgression in the northern margin. The depocenter or the area of the highest sedimentation rate switched from the northern East Subbasin during the Miocene to the Southwest Subbasin and the area close to the fossil ridge in the southern East Subbasin in the Pleistocene. The most active faulting and vertical uplifting now occur in the southern East Subbasin, caused most likely by the active and fastest subduction/obduction in the southern segment of the Manila Trench and the collision between the northeast Palawan and the Luzon arc. Timing of magmatic intrusions and seamounts constrained by seismic stratigraphy in the central basin varies and does not show temporal pulsing in their activities. Abstract Copyright (2015), . American Geophysical Union. All Rights Reserved. |
| Year of Publication: | 2015 |
| Research Program: |
IODP Integrated Ocean Drilling Program IODP2 International Ocean Discovery Program ODP Ocean Drilling Program |
| Key Words: | 12 Stratigraphy, Historical Geology and Paleoecology; 16 Structural Geology; Basin analysis; Cenozoic; Expedition 349; Geophysical methods; Geophysical profiles; Geophysical surveys; IODP Site U1432; International Ocean Discovery Program; Leg 184; Marine sediments; Miocene; Neogene; Neotectonics; North Pacific; Northwest Pacific; ODP Site 1148; Ocean Drilling Program; Pacific Ocean; Pleistocene; Quaternary; Sediments; Seismic methods; Seismic profiles; Seismic stratigraphy; South China Sea; Stratigraphic boundary; Surveys; Tectonics; Tertiary; Unconformities; West Pacific |
| Coordinates: |
N185010
N185010
E1163356
E1163356 N125500 N183400 E1170100 E1145500 |
| Record ID: | 2015060659 |
| Copyright Information: | GeoRef, Copyright 2017 American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom |