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Article: Sedimentary records of the Yangtze Block (South China) and their correlation with equivalent Neoproterozoic sequences on adjacent continents

TitleSedimentary records of the Yangtze Block (South China) and their correlation with equivalent Neoproterozoic sequences on adjacent continents
Authors
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
Citation
Sedimentary Geology, 2012, v. 265-266, p. 126-142 How to Cite?
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.
Persistent Identifierhttp://hdl.handle.net/10722/151381
ISSN
2014 Impact Factor: 2.665
2013 SCImago Journal Rankings: 1.156
ISI Accession Number ID
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.

References
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DC FieldValueLanguage
dc.contributor.authorWang, Wen_US
dc.contributor.authorZhou, MFen_US
dc.date.accessioned2012-06-26T06:21:27Z-
dc.date.available2012-06-26T06:21:27Z-
dc.date.issued2012en_US
dc.identifier.citationSedimentary Geology, 2012, v. 265-266, p. 126-142en_US
dc.identifier.issn0037-0738en_US
dc.identifier.urihttp://hdl.handle.net/10722/151381-
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.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/sedgeoen_US
dc.relation.ispartofSedimentary Geologyen_US
dc.subjectDetrital Zirconsen_US
dc.subjectGeochemistryen_US
dc.subjectNeoproterozoicen_US
dc.subjectRodiniaen_US
dc.subjectU-Pb-Hf Isotopesen_US
dc.subjectYangtze Blocken_US
dc.titleSedimentary records of the Yangtze Block (South China) and their correlation with equivalent Neoproterozoic sequences on adjacent continentsen_US
dc.typeArticleen_US
dc.identifier.emailZhou, MF:mfzhou@hkucc.hku.hken_US
dc.identifier.authorityZhou, MF=rp00844en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.sedgeo.2012.04.003en_US
dc.identifier.scopuseid_2-s2.0-84861833311en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84861833311&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume265-266en_US
dc.identifier.spage126en_US
dc.identifier.epage142en_US
dc.identifier.isiWOS:000306267200008-
dc.publisher.placeNetherlandsen_US
dc.relation.projectA possible linkage of the Yangtze Block (South China) in the Columbia super-continent-
dc.identifier.scopusauthoridWang, W=54883642000en_US
dc.identifier.scopusauthoridZhou, MF=7403506005en_US
dc.identifier.citeulike10595580-

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