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New constraints on the ages of neoproterozoic glaciations in south China
Zhou, CM; Tucker, R; Xiao, SH; Peng, ZX; Yuan, XL; Chen, Z
2004-05-01
Source PublicationGEOLOGY
ISSN0091-7613
Volume32Issue:5Pages:437-440
AbstractThe most complete Neoproterozoic successions in south China contain three diamictite intervals in the Changan, Tiesiao, and Nantuo Formations. The youngest and most widespread Nantuo glacial deposit overlies the Datangpo Formation and underlies the fossil-rich Doushantuo Formation. Previous authors have correlated the Nantuo diamictite to either Sturtian or Marinoan glacial deposits elsewhere. Here we report sedimentary and delta(13)C chemostratigraphic data of the Doushantuo cap dolostone, which overlies the Nantuo Formation. Facies-dependent variation in delta(13)C is interpreted as evidence for spatial heterogeneity in delta(13)C and/or temporal diachroneity in the initiation of cap carbonate sedimentation. Sedimentary and chemostratigraphic data are indicative of a Marinoan age for the Nantuo glaciation. This inference is supported by a new U-Pb zircon age of 663 +/- 4 Ma from a tuffaceous bed in the Datangpo Formation. The new date and other isotopic ages from south China constrain the age of the Changan and Tiesiao glaciation(s) as between 761 +/- 8 Ma and 663 +/- 4 Ma, and the Nantuo glaciation as between 663 +/- 4 Ma and 599 +/- 4 Ma.
KeywordU-Pb geochronology neoproterozoic South China glaciation carbon isotopes
DOI10.1130/G20286.1
Language英语
WOS KeywordSNOWBALL EARTH ; CAP CARBONATES ; GEOCHRONOLOGY ; SUPERGROUP ; ISOTOPES ; HISTORY ; RODINIA
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000221051300019
PublisherGEOLOGICAL SOC AMERICA, INC
Citation statistics
Cited Times:247[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/1040
Collection中国科学院南京地质古生物研究所
Corresponding AuthorXiao, SH
Affiliation1.Virginia Polytech Inst & State Univ, Dept Geosci, Blacksburg, VA 24061 USA
2.Washington Univ, Dept Earth & Planetary Sci, St Louis, MO 63130 USA
3.Nanjing Inst Geol & Paleontol, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Zhou, CM,Tucker, R,Xiao, SH,et al. New constraints on the ages of neoproterozoic glaciations in south China[J]. GEOLOGY,2004,32(5):437-440.
APA Zhou, CM,Tucker, R,Xiao, SH,Peng, ZX,Yuan, XL,&Chen, Z.(2004).New constraints on the ages of neoproterozoic glaciations in south China.GEOLOGY,32(5),437-440.
MLA Zhou, CM,et al."New constraints on the ages of neoproterozoic glaciations in south China".GEOLOGY 32.5(2004):437-440.
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