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Article: Sedimentary records of the Yangtze Block (South China) and their correlation with equivalent Neoproterozoic sequences on adjacent continents
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TitleSedimentary records of the Yangtze Block (South China) and their correlation with equivalent Neoproterozoic sequences on adjacent continents
 
AuthorsWang, W1
Zhou, MF1
 
KeywordsDetrital Zircons
Geochemistry
Neoproterozoic
Rodinia
U-Pb-Hf Isotopes
Yangtze Block
 
Issue Date2012
 
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/sedgeo
 
CitationSedimentary Geology, 2012, v. 265-266, p. 126-142 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.sedgeo.2012.04.003
 
AbstractThe Neoproterozoic Danzhou Group, composed of siliciclastic sedimentary rocks interbedded with minor carbonate and volcanic rocks in the southeastern Yangtze Block, South China, is thought to be related to the breakup of Rodinia. Detrital zircon ages constrain the deposition of the Danzhou Group at ~770Ma and ~730Ma. The Danzhou Group contains dominant Neoproterozoic detrital zircon grains (~740-900Ma) with two major age groups at ~740-790Ma and ~810-830Ma, suggesting the detritus was largely sourced from the widely distributed Neoproterozoic igneous plutons within the Yangtze Block. The sedimentary rocks from the lower Danzhou Group, including sandstones, siltstone and pelitic rocks, have UCC-like chemical signatures, representing mixed products of primary sources. The upper Danzhou Group received more recycled materials because the rocks have relatively higher Zr/Sc ratios, Hf contents and a greater influx of Pre-Neoproterozoic zircons. All of the rocks have high La/Sc, low Sc/Th and Co/Th ratios, consistent with sources dominantly composed of granitic to dioritic end-members from the western and northwestern Yangtze Block. Chemical compositions do not support significant contributions of mafic components. Most Neoproterozoic zircons have positive ε Hf(t) (0-17) indicative of sediments derived mainly from the western and northwestern Yangtze Block. The uni-modal Neoproterozoic zircons and felsic igneous source rocks for the Danzhou Group suggest that the Yangtze Block was an independent continent in the peripheral part of Rodinia. © 2012 Elsevier B.V.
 
ISSN0037-0738
2013 Impact Factor: 2.134
2013 SCImago Journal Rankings: 1.156
 
DOIhttp://dx.doi.org/10.1016/j.sedgeo.2012.04.003
 
ISI Accession Number IDWOS:000306267200008
Funding AgencyGrant Number
Research Grant Council of Hong KongHKU 707210P
State Key Laboratory of Mineral Deposits200802
State Key Lab of Geological Processes and Mineral ResourcesGPMR200710
Funding Information:

This study was supported by the Research Grant Council of Hong Kong (HKU 707210P), a project from the State Key Laboratory of Mineral Deposits (200802), and an opening fund of the State Key Lab of Geological Processes and Mineral Resources (GPMR200710). We thank Jianfeng Gao for collecting samples during the field trip, Xiao Fu for collecting major-element data, Liang Li and Liang Qi for collecting trace-element data and Mengning Dai for help in collecting U-Pb-Hf isotopic data of detrital zircons. An earlier version of the manuscript benefited much from the constructive comments by Paul T. Robinson and an anonymous reviewer. We are also grateful to Gert Jan. Weltje for his encouraging comments and competent editorial handling.

 
ReferencesReferences in Scopus
 
GrantsA possible linkage of the Yangtze Block (South China) in the Columbia super-continent
 
DC FieldValue
dc.contributor.authorWang, W
 
dc.contributor.authorZhou, MF
 
dc.date.accessioned2012-06-26T06:21:27Z
 
dc.date.available2012-06-26T06:21:27Z
 
dc.date.issued2012
 
dc.description.abstractThe Neoproterozoic Danzhou Group, composed of siliciclastic sedimentary rocks interbedded with minor carbonate and volcanic rocks in the southeastern Yangtze Block, South China, is thought to be related to the breakup of Rodinia. Detrital zircon ages constrain the deposition of the Danzhou Group at ~770Ma and ~730Ma. The Danzhou Group contains dominant Neoproterozoic detrital zircon grains (~740-900Ma) with two major age groups at ~740-790Ma and ~810-830Ma, suggesting the detritus was largely sourced from the widely distributed Neoproterozoic igneous plutons within the Yangtze Block. The sedimentary rocks from the lower Danzhou Group, including sandstones, siltstone and pelitic rocks, have UCC-like chemical signatures, representing mixed products of primary sources. The upper Danzhou Group received more recycled materials because the rocks have relatively higher Zr/Sc ratios, Hf contents and a greater influx of Pre-Neoproterozoic zircons. All of the rocks have high La/Sc, low Sc/Th and Co/Th ratios, consistent with sources dominantly composed of granitic to dioritic end-members from the western and northwestern Yangtze Block. Chemical compositions do not support significant contributions of mafic components. Most Neoproterozoic zircons have positive ε Hf(t) (0-17) indicative of sediments derived mainly from the western and northwestern Yangtze Block. The uni-modal Neoproterozoic zircons and felsic igneous source rocks for the Danzhou Group suggest that the Yangtze Block was an independent continent in the peripheral part of Rodinia. © 2012 Elsevier B.V.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationSedimentary Geology, 2012, v. 265-266, p. 126-142 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.sedgeo.2012.04.003
 
dc.identifier.citeulike10595580
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.sedgeo.2012.04.003
 
dc.identifier.epage142
 
dc.identifier.isiWOS:000306267200008
Funding AgencyGrant Number
Research Grant Council of Hong KongHKU 707210P
State Key Laboratory of Mineral Deposits200802
State Key Lab of Geological Processes and Mineral ResourcesGPMR200710
Funding Information:

This study was supported by the Research Grant Council of Hong Kong (HKU 707210P), a project from the State Key Laboratory of Mineral Deposits (200802), and an opening fund of the State Key Lab of Geological Processes and Mineral Resources (GPMR200710). We thank Jianfeng Gao for collecting samples during the field trip, Xiao Fu for collecting major-element data, Liang Li and Liang Qi for collecting trace-element data and Mengning Dai for help in collecting U-Pb-Hf isotopic data of detrital zircons. An earlier version of the manuscript benefited much from the constructive comments by Paul T. Robinson and an anonymous reviewer. We are also grateful to Gert Jan. Weltje for his encouraging comments and competent editorial handling.

 
dc.identifier.issn0037-0738
2013 Impact Factor: 2.134
2013 SCImago Journal Rankings: 1.156
 
dc.identifier.scopuseid_2-s2.0-84861833311
 
dc.identifier.spage126
 
dc.identifier.urihttp://hdl.handle.net/10722/151381
 
dc.identifier.volume265-266
 
dc.languageeng
 
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/sedgeo
 
dc.publisher.placeNetherlands
 
dc.relation.ispartofSedimentary Geology
 
dc.relation.projectA possible linkage of the Yangtze Block (South China) in the Columbia super-continent
 
dc.relation.referencesReferences in Scopus
 
dc.subjectDetrital Zircons
 
dc.subjectGeochemistry
 
dc.subjectNeoproterozoic
 
dc.subjectRodinia
 
dc.subjectU-Pb-Hf Isotopes
 
dc.subjectYangtze Block
 
dc.titleSedimentary records of the Yangtze Block (South China) and their correlation with equivalent Neoproterozoic sequences on adjacent continents
 
dc.typeArticle
 
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Author Affiliations
  1. The University of Hong Kong