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High-Resolution Eocene Magnetostratigraphy of the Xijigou Section: Implications for the Infilling Process of Xining Basin, Northeastern Tibetan Plateau
Yang, Fan1,2,3; Guo, Zhengtang1,2,3; Zhang, Chunxia1,2,4; Md, Sayem Abu Sadat5; He, Zhilin1,2,3; Deng, Chenglong3,6
2019-08-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
ISSN2169-9313
Volume124Issue:8Pages:7588-7603
AbstractThe Eocene was the initial stage of the Cenozoic global climatic transition from greenhouse to icehouse conditions. Our understanding of the Eocene climate is based mainly on marine records, and comparison of marine and terrestrial climate records of the Eocene has revealed inconsistencies. Thus, there is a need for more continuous, high-resolution Eocene sedimentary records from land. Xining Basin in the northeastern Tibetan Plateau contains a sequence of well-exposed and complete Eocene strata. Extending previous research, we have conducted a new high-resolution lithostratigraphic and magnetostratigraphic study of the Xijigou section in Xining Basin. The results indicate that the Xijigou section spans the interval from similar to 34.2 to 53 Ma, representing an average sediment accumulation rate of similar to 1.4 cm/kyr. The basal ages of the Mahalagou and Honggou Formations are similar to 39.9 and similar to 52.4 Ma, respectively. A comparison of all available Eocene sedimentary records from Xining Basin indicates that the strata deposited during similar to 53-35 Ma developed conformably and are well correlated over space. We conclude that sediment deposition was not affected by large-scale tectonic activity at the time and rather was controlled by the global climate. After similar to 35 Ma, the sediment accumulation rate increased to similar to 4 cm/kyr, which may reflect the far-field influence of the India-Eurasia collision on Xining Basin.
Keywordmagnetostratigraphy Eocene Xining Basin stratigraphic correlation sediment accumulation rate
DOI10.1029/2019JB017624
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordROCK-MAGNETIC RECORD ; MIDDLE EOCENE ; CLIMATIC OPTIMUM ; SOUTHWEST PACIFIC ; TECTONIC UPLIFT ; POLLEN RECORDS ; CARBON-ISOTOPE ; ARIDIFICATION ; STRATIGRAPHY ; SEDIMENTS
Language英语
Funding ProjectNational Natural Science Foundation of China[41690114] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41430531]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000491283500004
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95721
Collection新生代地质与环境院重点实验室
岩石圈演化国家重点实验室
Corresponding AuthorGuo, Zhengtang
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing, Peoples R China
2.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao, Shandong, Peoples R China
5.Jahangirnagar Univ, Dept Geol Sci, Dhaka, Bangladesh
6.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
First Author AffilicationKey Laboratory of Cenozoic Geology and Environment, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Cenozoic Geology and Environment, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yang, Fan,Guo, Zhengtang,Zhang, Chunxia,et al. High-Resolution Eocene Magnetostratigraphy of the Xijigou Section: Implications for the Infilling Process of Xining Basin, Northeastern Tibetan Plateau[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2019,124(8):7588-7603.
APA Yang, Fan,Guo, Zhengtang,Zhang, Chunxia,Md, Sayem Abu Sadat,He, Zhilin,&Deng, Chenglong.(2019).High-Resolution Eocene Magnetostratigraphy of the Xijigou Section: Implications for the Infilling Process of Xining Basin, Northeastern Tibetan Plateau.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,124(8),7588-7603.
MLA Yang, Fan,et al."High-Resolution Eocene Magnetostratigraphy of the Xijigou Section: Implications for the Infilling Process of Xining Basin, Northeastern Tibetan Plateau".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 124.8(2019):7588-7603.
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