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Repositioning the Great Unconformity at the southeastern margin of the North China Craton
Wan, Bin (万斌))1,2; Tang, Qing3; Pang, Ke (庞科)1,2; Wang, Xiaopeng1,2,4; Bao, Zhian5; Meng, Fanwei (孟凡巍)1,2; Zhou, Chumming (周传明)2,6; Yuan, Xunlai (袁训来)1,2,4,7; Hua, Hong5; Xiao, Shuhai3
2019-05-01
Source PublicationPRECAMBRIAN RESEARCH
ISSN0301-9268
Volume324Pages:1-17
Abstract

The Great Unconformity between the Precambrian basement rock and Cambrian sedimentary cover has been extensively documented in Laurentia and may provide insights into the environmental context of the Cambrian explosion. A similar unconformity has been known in the North China Craton (NCC) and it offers an opportunity to constrain the geographic extent and geochronological magnitude of the Great Unconformity. However, the placement and magnitude of the Great Unconformity in the NCC, particularly at the southeastern margin of the NCC, is uncertain. For example, in the Huaibei region of the southeastern margin of the NCC, this unconformity has been variously placed beneath or above the Gouhou Formation, which preserves critical micro- and macrofossil assemblages with great paleobiological and biostratigraphic significance. This uncertainty significantly hampers our ability to fully appreciate the geological history of the NCC. To resolve this issue, we carried out an integrated biostratigraphic, sedimentary petrological and detrital zircon geochronological investigation on the Gouhou Formation and the overlying Houjiashan Formation in the Huaibei region. Our data suggest that the Great Unconformity lies within the Gouhou Formation and represents a ca. 200-300 Myr depositional gap: the Lower Member of the Gouhou Formation is of Tonian age whereas the Middle-Upper members of the Gouhou Formation are of early Cambrian. Therefore, we propose that the Gouhou Formation be redefined to contain only the Lower Member, and the Middle-Upper members be included in the Houjiashan Formation. Our analysis also confirms that the Great Unconformity can be widely recognized along the southeastern margin of the NCC. The recognition of the Great Unconformity in the Huaibei region helps to clarify the tectonic history, basin development, stratigraphic correlation, and paleogeographic reconstruction of the southeastern margin of the NCC during the Tonian-Cambrian periods.

KeywordNeoproterozoic Great Unconformity North China Craton (Ncc) Gouhou Formation Detrital Zircon Geochronology
DOI10.1016/j.precamres.2019.01.014
Language英语
WOS KeywordOrganic-walled Microfossils ; Xuzhou-huaibei Area ; U-pb Geochronology ; Tectonic Evolution ; Hf Isotopes ; Zircon ; Constraints ; Age ; Successions ; Magmatism
Funding ProjectChinese Academy of Sciences[XDB26000000] ; Chinese Academy of Sciences[QYZDJ-SSW-DQC009] ; National Natural Science Foundation of China[41502010] ; National Natural Science Foundation of China[41602007] ; National Natural Science Foundation of China[4151101015] ; National Natural Science Foundation of China[41672025] ; Jiangsu Provincial Department of Science and Technology[BK20161615] ; Jiangsu Provincial Department of Science and Technology[BK20161090] ; NASA Exobiology and Evolutionary Biology Program ; National Science Foundation[EAR-1528553]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000461535400001
Funding OrganizationChinese Academy of Sciences ; National Natural Science Foundation of China ; Jiangsu Provincial Department of Science and Technology ; NASA Exobiology and Evolutionary Biology Program ; National Science Foundation
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/15940
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorWan, Bin (万斌)); Xiao, Shuhai
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Jiangsu, Peoples R China
3.Virginia Tech, Dept Geosci, Blacksburg, VA 24061 USA
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Northwest Univ, State Key Lab Continental Dynam & Dept Geol, Xian 710069, Shaanxi, Peoples R China
6.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, CAS Key Lab Econ Stratig & Palaeogeog, Nanjing 210008, Jiangsu, Peoples R China
7.Nanjing Univ, Ctr Res & Educ Biol Evolut & Environm, Nanjing 210023, Jiangsu, Peoples R China
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Wan, Bin ,Tang, Qing,Pang, Ke ,et al. Repositioning the Great Unconformity at the southeastern margin of the North China Craton[J]. PRECAMBRIAN RESEARCH,2019,324:1-17.
APA Wan, Bin .,Tang, Qing.,Pang, Ke .,Wang, Xiaopeng.,Bao, Zhian.,...&Xiao, Shuhai.(2019).Repositioning the Great Unconformity at the southeastern margin of the North China Craton.PRECAMBRIAN RESEARCH,324,1-17.
MLA Wan, Bin ,et al."Repositioning the Great Unconformity at the southeastern margin of the North China Craton".PRECAMBRIAN RESEARCH 324(2019):1-17.
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