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Tectono-depositional pattern and evolution of the middle Yangtze Platform (South China) during the late Ediacaran
Ding, Yi1,2,3,4; Chen, Daizhao2,3,4; Zhou, Xiqiang2,3,4; Guo, Chuan2,3; Huang, Taiyu2,3,4; Zhang, Gongjing2,3,4
2019-10-01
Source PublicationPRECAMBRIAN RESEARCH
ISSN0301-9268
Volume333Pages:22
AbstractThe depositional environments and evolution of the Yangtze Block during the Ediacaran-Cambrian transition remain uncertain, preventing a thorough understanding of the coeval ocean stratification, redox heterogeneity and organism distribution. In this study, detailed facies and sequence stratigraphic analyses were carried out on the Dengying Formation and its correlatives to better constrain the tectono-depositional pattern and evolution of the middle Yangtze area in the late Ediacaran. Twenty-five lithofacies were identified in nineteen sections and grouped into six depositional fades: intrashelf basin, intrashelf shoal, restricted platform interior, platform margin, upper-middle slope, and lower siliceous slope-basin. The spatiotemporal distributions of these depositional facies reveal an isolated, rimmed middle Yangtze carbonate platform embayed with a westward-opening intrashelf basin. This intrashelf basin gradually became wider and deeper westwards, linking to a NNE-trending basinal seaway that separated the middle Yangtze Platform from its upper Yangtze counterpart. The enclosure of the marginal shoal-reef complex with an intrashelf shoal chain formed a large-scale restricted lagoon and associated tidal flat in the platform interior. Based on key sequence boundaries and cycle stacking patterns, two and a half transgressive-regressive sequences were distinguished in the Dengying Formation and its correlatives in the twelve representative sections. Furthermore, these sequences can be correlated well with those identified in other upper Ediacaran successions elsewhere in upper Yangtze, Namibia, India and Oman, indicating a eustatic origin for these sequences. However, the complex platform-basin configuration, with significant facies and thickness variations, reflects a transtensional tectonic regime in the middle Yangtze area during the late Ediacaran. The abrupt changes in lithofacies and thickness across the southern principal platform margin and those from sandy shoals/banks to storm-influenced shelf along the northern portion of the intrashelf basin in the Three Gorges (western Hubei) suggest synthetic extensional faulting across the margins during deposition. The two synthetic extensional fault zones might have been induced by NNE-trending transtensional faulting along the eastern margin of the upper Yangtze Platform. This structural pattern fundamentally controlled the depositional differentiation of the middle Yangtze Platform during the late Ediacaran and also laid the foundation for the subsequent facies distribution and depositional evolution during the early Cambrian Terreneuvian Epoch.
KeywordLate Ediacaran Dengying Formation Yangtze Platform Sequence stratigraphy Tectono-depositional pattern
DOI10.1016/j.precamres.2019.105426
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China
WOS KeywordSEQUENCE STRATIGRAPHY ; DOUSHANTUO FORMATION ; CARBONATE PLATFORM ; GEOCHRONOLOGICAL CONSTRAINTS ; CAMBRIAN TRANSITION ; LESSER HIMALAYA ; GORGES AREA ; DEEP-OCEAN ; BASIN ; ARCHITECTURE
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[41472089] ; National Natural Science Foundation of China (NSFC)[U1663209] ; National Natural Science Foundation of China (NSFC)[91755210] ; National Key R&D Program of China[2017YFC0603103]
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000493218900006
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95755
Collection油气资源研究院重点实验室
Corresponding AuthorChen, Daizhao
Affiliation1.Chengdu Univ Technol, Postdoctoral Res Stn Geol Resource & Geol Engn, Chengdu 610059, Sichuan, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationKey Laboratory of Petroleum Resource Research, Chinese Academy of Sciences;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Petroleum Resource Research, Chinese Academy of Sciences;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Ding, Yi,Chen, Daizhao,Zhou, Xiqiang,et al. Tectono-depositional pattern and evolution of the middle Yangtze Platform (South China) during the late Ediacaran[J]. PRECAMBRIAN RESEARCH,2019,333:22.
APA Ding, Yi,Chen, Daizhao,Zhou, Xiqiang,Guo, Chuan,Huang, Taiyu,&Zhang, Gongjing.(2019).Tectono-depositional pattern and evolution of the middle Yangtze Platform (South China) during the late Ediacaran.PRECAMBRIAN RESEARCH,333,22.
MLA Ding, Yi,et al."Tectono-depositional pattern and evolution of the middle Yangtze Platform (South China) during the late Ediacaran".PRECAMBRIAN RESEARCH 333(2019):22.
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