IGGCAS OpenIR  > 新生代地质与环境院重点实验室
A reassessment on the timing and potential drivers of the major seawater Sr-87/Sr-86 drop in the Ordovician Period: New evidence from conodonts in China
Liu, Kang1,2,3; Jiang, Maosheng1,2; Huang, Taiyu4; Zhang, Liyu5; Wang, Yuanzheng1,2,3; Chen, Daizhao1,2,3
2022-08-20
Source PublicationCHEMICAL GEOLOGY
ISSN0009-2541
Volume604Pages:13
AbstractThe major drop in marine Sr-87/Sr-86 records across the Middle-Late Ordovician boundary (Darriwilian-Sandbian) was one of the most dramatic perturbations of the global Sr cycle in Phanerozoic. However, the precise timing of this isotopic event has not been well constrained, partially making it difficult to further clarify the possible drivers of this isotopic event. For this study, we present multi-continental conodont apatite-based Sr-isotope datasets from three well-studied Ordovician carbonate successions in China, i.e., the Huanghuachang section in South China, the Kalpin Shuinichang-Dawangou and the Nanyigou sections in Tarim Basin, northwestern China. Our new Sr-87/Sr-86 records generally accord with global seawater Sr-87/Sr-86 secular variation curve and are supposed to be a reflection of coeval primary seawater signatures. Constrained with detailed conodont biostratigraphic and high-resolution 6 13 C chemostratigraphic framework, the onset of the sharp decline in Sr-87/Sr-86 ratios was placed within the Histiodella holodentata zone-Eoplacognathus suecicus zone, and approximately synchronous with the initiation of the Middle Darriwilian Carbon Isotope Excursion (MDICE). Numerical modeling reveals that this major Sr-87/Sr-86 drop could have been generated by a sustainable increase of oceanic hydrothermal (mantle-derived) Sr flux and/or a progressive decrease of continental-derived Sr flux. Multi-proxy analyses further demonstrate that the impact of enhanced oceanic hydrothermal activities accompanying with the accelerating opening of the Rheic and Paleo-Tethys oceans, may have played a central role in driving the major Sr-87/Sr-86 drop during the Middle-Late Ordovician transition.
KeywordOrdovician Sr-isotopes Conodonts Mid-oceanic ridge spreading Mass-balance model
DOI10.1016/j.chemgeo.2022.120906
Funding OrganizationNational Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC)
WOS KeywordCARBON-ISOTOPE STRATIGRAPHY ; YANGTZE REGION ; SOUTH CHINA ; TARIM BASIN ; MIDDLE ; SR ; RECORDS ; BIODIVERSIFICATION ; CHEMOSTRATIGRAPHY ; GEOCHEMISTRY
Language英语
Funding ProjectNational Natural Science Founda-tion of China (NSFC)[41573010] ; National Natural Science Founda-tion of China (NSFC)[41272134] ; National Natural Science Founda-tion of China (NSFC)[91755210]
Funding OrganizationNational Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC) ; National Natural Science Founda-tion of China (NSFC)
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000810937900001
PublisherELSEVIER
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Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/106108
Collection新生代地质与环境院重点实验室
Corresponding AuthorJiang, Maosheng; Chen, Daizhao
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.China Natl Adm Coal Geol, Gen Prospecting Inst, Beijing 100039, Peoples R China
5.SINOPEC, Petr Explorat & Prod Res Inst, Wuxi Res Inst Petr Geol, Wuxi 214126, Jiangsu, 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
Liu, Kang,Jiang, Maosheng,Huang, Taiyu,et al. A reassessment on the timing and potential drivers of the major seawater Sr-87/Sr-86 drop in the Ordovician Period: New evidence from conodonts in China[J]. CHEMICAL GEOLOGY,2022,604:13.
APA Liu, Kang,Jiang, Maosheng,Huang, Taiyu,Zhang, Liyu,Wang, Yuanzheng,&Chen, Daizhao.(2022).A reassessment on the timing and potential drivers of the major seawater Sr-87/Sr-86 drop in the Ordovician Period: New evidence from conodonts in China.CHEMICAL GEOLOGY,604,13.
MLA Liu, Kang,et al."A reassessment on the timing and potential drivers of the major seawater Sr-87/Sr-86 drop in the Ordovician Period: New evidence from conodonts in China".CHEMICAL GEOLOGY 604(2022):13.
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