globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2016.11.041
论文题名:
Subsidence of the northern South China Sea and formation of the Bashi Strait in the latest Miocene: Paleoceanographic evidences from 9-Myr high resolution benthic foraminiferal δ18O and δ13C records
作者: Tian J.; Ma X.; Zhou J.; Wang W.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 466
起始页码: 382
结束页码: 391
语种: 英语
英文关键词: Bashi Strait ; Foraminiferal δ13C ; Foraminiferal δ18O ; Paleoceanography ; South China Sea ; Subsidence of South China Sea
英文摘要: We present astronomically tuned high time resolution (3–4 kyr) benthic foraminiferal δ18O and δ13C records between 9 Ma and 5 Ma from Ocean Drilling Program (ODP) Site 1143 in the southern South China Sea (SCS). We found that the late Miocene ocean carbon shift (LMOCS) which was linked with the late Miocene/early Pliocene “Biogenic Bloom” also occurred in the northern and southern SCS. A marked deep-water δ13C gradient as much as ~ 1.0‰ of the northern and southern SCS was observed between 6.5 Ma and 5.9 Ma, which was probably caused by the significant difference in paleoproductivity between the northern and southern SCS. The deep δ13C gradient was likely produced by rapid tectonic subsidence in the northern SCS at ~ 6.0 Ma and the final formation of the Bashi Strait at ~ 6.5 Ma. A reversed benthic δ13C gradient of the northern and southern SCS was also observed between 1.2 Ma and 0.35 Ma, which was probably caused by the consecutive closures of the interarc water gates within the Bashi strait at ~ 3.0 Ma and ~ 1.2 Ma. Closures of the interarc water gates within the Bashi strait at ~ 3.0 Ma and ~ 1.2 Ma further semi-enclosed the SCS basin and made the paleoproductivity the major factor influencing the deep water δ13C, leading to the reversed deep water δ13C gradient of the northern and southern SCS between 1.2 Ma and 0.35 Ma. © 2016 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68020
Appears in Collections:过去全球变化的重建

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作者单位: State Key Laboratory of Marine Geology, Tongji University, Shanghai, China; Department of Geology, Northwest University, Xi'an, China

Recommended Citation:
Tian J.,Ma X.,Zhou J.,et al. Subsidence of the northern South China Sea and formation of the Bashi Strait in the latest Miocene: Paleoceanographic evidences from 9-Myr high resolution benthic foraminiferal δ18O and δ13C records[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,466
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