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A refined late-Cryogenian - Ediacaran earth history of South China: Phosphorous-rich marbles of the Dabie and Sulu orogens
Prave, A. R.1; Meng, F. W. (孟凡巍)2; Lepland, A.3,4,5,6; Kirsimae, K.5; Kreitsmann, T.5; Jiang, C. Z.7
2018-02-01
Source PublicationPRECAMBRIAN RESEARCH
ISSN0301-9268
Volume305Pages:166-176
Abstract

The late-Cryogenian - Ediacaran geological framework for South China is constructed principally from sedimentary successions preserved in the central and western regions of the Yangtze Block. New stratigraphic and carbonate-carbon isotope data allow us to extend that framework into the exhumed HP-UHP subduction complexes of the eastern Dabie and Sulu orogens that separate the South and North China cratons. Those data show that marble and phosphorous-rich (P-rich) units in those complexes were originally part of an Ediacaran shallow marine shelf-carbonate platform. The basal pebbly schist (metadiamictite) and lowermost P-rich marble of the Jinping Formation (Haizhou Group) in the Sulu Orogen matches in both facies character and C-isotope profile that of the Marinoan-equivalent glacial-cap carbonate couplet of the Nantuo and Doushantuo formations. The Daxinwu Formation (Susong Group) in the eastern Dabie Orogen contains a marble unit that has, for several hundreds of metres, a strikingly uniform C-isotope profile of low delta C-13 positive values and is overlain by a P-rich graphitic schist; these features match those of the late Ediacaran to early Cambrian Dengying Formation. These correlations establish that the HP-UHP metasedimentary rocks, many of which were once considered to be Palaeo- to Mesoproterozoic in age, are a Neoproterozoic-age cover sequence of the continental margin of the Yangtze Block. Further, their widespread development limits their utility as indicators of offset across the Tan-Lu fault zone and, instead, favours tectonic models that interpret that feature as a continental-scale tear fault formed during the Mesozoic collision and suturing of the North and South China cratons.

KeywordDabie Orogen Sulu Orogen Haizhou Group Susong Group Ediacaran Marinoan Glaciation Phosphorite
DOI10.1016/j.precamres.2017.11.022
Language英语
WOS KeywordUltrahigh-pressure Metamorphism ; Lu Fault Zone ; U-pb Ages ; Doushantuo Formation ; Neoproterozoic Doushantuo ; Yangtze Block ; Fossil Preservation ; Cambrian Transition ; Isotope Variations ; North Dabie
Funding ProjectNational Natural Science Foundation of China[41473039] ; National Natural Science Foundation of China[4151101015] ; Estonian Science Agency[PUT0696]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000424176100011
Funding OrganizationNational Natural Science Foundation of China ; Estonian Science Agency
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/18844
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorPrave, A. R.
Affiliation1.Univ St Andrews, Sch Earth & Environm Sci, St Andrews KY16 9AL, Fife, Scotland
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, 39 East Beijing Rd, Nanjing, Jiangsu, Peoples R China
3.Geol Survey Norway, N-7491 Trondheim, Norway
4.Univ Tromso, Ctr Arctic Gas Hydrate Environm & Climate, N-9037 Tromso, Norway
5.Univ Tartu, Dept Geol, EE-50411 Tartu, Estonia
6.Tallinn Univ Technol, Inst Geol, EE-19086 Tallinn, Estonia
7.Univ Oxford, Dept Earth Sci, South Pk Rd, Oxford OX1 3AN, England
Recommended Citation
GB/T 7714
Prave, A. R.,Meng, F. W. ,Lepland, A.,et al. A refined late-Cryogenian - Ediacaran earth history of South China: Phosphorous-rich marbles of the Dabie and Sulu orogens[J]. PRECAMBRIAN RESEARCH,2018,305:166-176.
APA Prave, A. R.,Meng, F. W. ,Lepland, A.,Kirsimae, K.,Kreitsmann, T.,&Jiang, C. Z..(2018).A refined late-Cryogenian - Ediacaran earth history of South China: Phosphorous-rich marbles of the Dabie and Sulu orogens.PRECAMBRIAN RESEARCH,305,166-176.
MLA Prave, A. R.,et al."A refined late-Cryogenian - Ediacaran earth history of South China: Phosphorous-rich marbles of the Dabie and Sulu orogens".PRECAMBRIAN RESEARCH 305(2018):166-176.
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