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Sedimentary Evolution and Transgressions of the Western Subei Basin in Eastern China since the Late Pliocene
Cheng Yu1; Li Xiangqian1; Shu Junwu (舒军武)2; Bai Shibiao3; Zhao Zengyu1; Zhang Xiangyun1; Guo Gang1; Zhang Ping1; Lin Jingxing4
2019-02-01
Source PublicationACTA GEOLOGICA SINICA-ENGLISH EDITION
ISSN1000-9515
Volume93Issue:1Pages:155-166
Abstract

Sedimentary sequences in the Subei Basin are complex and have been affected by interactions between the ocean and rivers since the Late Pliocene, including the Yellow River, Huaihe River, and the Yangtze River. This sedimentary evolution, in particular the timing of Pleistocene transgressions, has long been a matter of controversy owing to the lack of precise chronological evidence. The aim of this study is to explore the evolution of the sedimentary environment throughout the past 3.00 Ma in this region on the basis of a comprehensive analysis of particle size and foraminifera and ostracods collected in the TZK9 core from the Subei Basin combined with geochronological studies of magnetostratigraphy, AMS(14)C and optically stimulated luminescence (OSL). The results show that fluvial facies in the sedimentary environment from 3.00 to 1.01 Ma. There were fluvial facies and reflects six sea-level high stands from 1.01 to 0.25 Ma. The study area was affected by four large-scale transgressions since 0.25 Ma. The four marine sedimentary layers known as DU7 (buried at 48-52 m), DU5 (buried at 35-41 m), DU3 (buried at 16-23 m), and DU1 (buried at 2-4 m) are recorded in the MIS7 (210-250 ka), MIS5, MIS3, and Holocene, respectively. The magnitude of the DU5 transgression was identical to that of the DU3 transgression, both were larger than the DU7 transgression, and the DU1 transgression was the weakest. The variation of transgression strength reflects the influence of global changes in sea level, tectonic subsidence, shell ridges, and sand dams. In the TZK9 core, we found evidence of seven sea-level high stands from the Early-Middle Pleistocene, and the first one caused by regional rapid subsidence and could be traced back to 0.83-0.84 Ma. The sea-level high stands and the age of the first one recorded above was different from other cores in eastern China, this was caused by the lack of absolute age control and the differences in paleotopography during this period. This study reconstructs sedimentary evolution, determines the transgression and its age, establishes the chronology since the Late Pliocene, and provides a scientific framework for further paleoenvironmental and tectonic studies. The results of this study highlight the important role that local tectonics and global sea level play in the sedimentary evolution and transgressions that have occurred in the western Subei Basin.

KeywordForaminifera And Ostracods Sea-level Change Transgression Subei Basin
DOI10.1111/1755-6724.13774
Language英语
WOS KeywordSouth Yellow Sea ; Quaternary Marine Transgressions ; River Delta ; Late Pleistocene ; Laizhou Bay ; Bohai Sea ; Coastal ; Core ; Magnetostratigraphy ; Sequence
Funding ProjectChina Geological Survey Project[DD20160060] ; China Geological Survey Project[121201140 42901] ; National Natural Science Foundation of China[41502119] ; National Natural Science Foundation of China[41371207]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000461610000010
Funding OrganizationChina Geological Survey Project ; National Natural Science Foundation of China
PublisherWILEY
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Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/15864
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorCheng Yu
Affiliation1.Inst Geol Survey Jiangsu Prov, Nanjing 210018, Jiangsu, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, CAS Key Lab Econ Stratig & Palaeogeog, Nanjing 210008, Jiangsu, Peoples R China
3.Nanjing Normal Univ, Sch Geog Sci, Nanjing 210023, Jiangsu, Peoples R China
4.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
Recommended Citation
GB/T 7714
Cheng Yu,Li Xiangqian,Shu Junwu ,et al. Sedimentary Evolution and Transgressions of the Western Subei Basin in Eastern China since the Late Pliocene[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2019,93(1):155-166.
APA Cheng Yu.,Li Xiangqian.,Shu Junwu .,Bai Shibiao.,Zhao Zengyu.,...&Lin Jingxing.(2019).Sedimentary Evolution and Transgressions of the Western Subei Basin in Eastern China since the Late Pliocene.ACTA GEOLOGICA SINICA-ENGLISH EDITION,93(1),155-166.
MLA Cheng Yu,et al."Sedimentary Evolution and Transgressions of the Western Subei Basin in Eastern China since the Late Pliocene".ACTA GEOLOGICA SINICA-ENGLISH EDITION 93.1(2019):155-166.
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