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Magnetostratigraphy and Th-230 dating of Pleistocene biogenic reefs in XK-1 borehole from Xisha Islands, South China Sea
Wang Zhen-Feng1; Zhang Dao-Jun1; Liu Xin-Yu1; You Li1; Luo, Wei1; Yi Liang2,3; Tan Liang-Cheng4; Zhu You-Hua5; Qin Hua-Feng3; Cheng Hai6; Li Zhong-Quan7; Xie Qiang8; Che Zhi-Wei9; Deng Cheng-Long3,10; Zhu Ri-Xiang3
AbstractBiogenic reefs and carbonate platforms are valuable natural resources, which play a role in modulating global climate and carbon cycle through biological processes. In this study, by combining paleomagnetic data and Th-230 dating with lithostratigraphic characters for the XK-1 biogenic reef sequence from the Xisha Islands, northern South China Sea, new insights into the regional geochronology since the early Pleistocene are obtained. The main results are as follows: (1) Paleomagnetic findings suggest that the sequence records the Brunhes normal chron and the Matuyama reverse chron, including the Jaramillo and Olduvai normal subchrons. (2) The studied biogenic reef sequence named as the Ledong Formation has two subunits, i.e., upper and lower sections, which can be correlated to the middle and late Pleistocene, and the early Pleistocene, respectively. By comparing our results with those for previous long cores from the Xisha area, we conclude that the previous debate on the position and age of the Ledong Formation around the Xisha area mainly arose from inadequate absolute dating and use of different criteria for lithostratigraphic boundary determination. After determining the lower lithological boundary of the Ledong Formation, we set the age of the boundary as similar to 2. 0 Ma.
KeywordMagnetostratigraphy Th-230 Dating Biogenic Reefs South China Sea Pleistocene
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000396386700016
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.China Natl Offshore Oil Corp, Zhanjiang Branch, Zhanjiang 524057, Guangdong, Peoples R China
2.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China
5.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Jiangsu, Peoples R China
6.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
7.Chengdu Univ Technol, Sch Geosci, Chengdu 610059, Peoples R China
8.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Sanya 572000, Hainan, Peoples R China
9.State Ocean Adm, Haikou Marine Environm Monitoring Cent Stn, Haikou 570311, Peoples R China
10.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Wang Zhen-Feng,Zhang Dao-Jun,Liu Xin-Yu,et al. Magnetostratigraphy and Th-230 dating of Pleistocene biogenic reefs in XK-1 borehole from Xisha Islands, South China Sea[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2017,60(3):1027-1038.
APA Wang Zhen-Feng.,Zhang Dao-Jun.,Liu Xin-Yu.,You Li.,Luo, Wei.,...&Zhu Ri-Xiang.(2017).Magnetostratigraphy and Th-230 dating of Pleistocene biogenic reefs in XK-1 borehole from Xisha Islands, South China Sea.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,60(3),1027-1038.
MLA Wang Zhen-Feng,et al."Magnetostratigraphy and Th-230 dating of Pleistocene biogenic reefs in XK-1 borehole from Xisha Islands, South China Sea".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 60.3(2017):1027-1038.
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