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Article: Petrogenesis and tectonic setting of volcanic rocks in the Xiaoshan and Waifangshan areas along the southern margin of the North China Craton: Constraints from bulk-rock geochemistry and Sr-Nd isotopic composition

TitlePetrogenesis and tectonic setting of volcanic rocks in the Xiaoshan and Waifangshan areas along the southern margin of the North China Craton: Constraints from bulk-rock geochemistry and Sr-Nd isotopic composition
Authors
KeywordsNorth China Craton
Paleo-Mesoproterozoic
Subduction
Supercontinent Columbia (Nuna)
Volcanic Rocks
Issue Date2010
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/lithos
Citation
Lithos, 2010, v. 114 n. 1-2, p. 186-199 How to Cite?
AbstractAs part of the Xiong'er volcanic belt along the southern margin of the North China Craton, volcanic rocks in the Xiaoshan and Waifangshan areas have a compositional range from the basaltic andesite, andesite, dacite to rhyolite, which display consistent variation trends in terms of their major and trace elements and Sr-Nd isotopic compositions. The variable Yb contents with nearly constant La/Yb and Tb/Yb ratios of volcanic rocks in two areas suggest that the fractional crystallization may have played an important role in the differentiation from the basaltic andesite, through andesite and dacite, to rhyolite. The volcanic rocks in these two areas are characterized by the LILE and LREE enrichments and negative HFSE anomalies, implying hydrous melting of a mantle wedge in a subduction zone. Variable Sr/Nd ratios of the basaltic andesite and andesite are interpreted as a result of the fluid addition from a subducting slab. Non-radiogenic Nd isotopic compositions as well as high Zr/Y and Nb/Y ratios suggest that the volcanic rocks in these areas were derived from an enriched mantle source. On the other hand, the volcanic rocks of the basaltic andesite and andesite possess markedly higher Fe-Ti and HFSE concentrations than those of typical intra-oceanic arcs, implying that the mantle source from which the volcanic rocks were derived was metasomatised by siliceous melts during the Archean to Paleoproterozoic subduction/collision in the Trans-North China Orogen. These data suggest that in the Paleo-Mesoproterozoic, the southern margin of the North China Craton was most likely an Andean-type continental arc in which slab dehydration not only induced the melting of a pre-existing metasomatised mantle source, but also released LILE-enriched fluids into the mantle source, masking the inherent HFSE-enriched characteristics of the volcanic rocks along the southern margin of the craton. The results of this study indicate that the North China Craton, like many other continental components (e.g. North America, Greenland, Baltica, Amazonia, Australia, etc.) of the supercontinent Columbia (Nuna), also underwent a subduction-related outgrowth along its southern margin during the Paleo-Mesoproterozoic time. © 2009 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/151296
ISSN
2015 Impact Factor: 3.723
2015 SCImago Journal Rankings: 2.920
ISI Accession Number ID
Funding AgencyGrant Number
Chinese National 973 Program2007CB411307
Chinese NSFC40730315
Hong Kong RGC7063/06P
7055/05P
7066/07P
7053/08P
CAS/SAFEA
Funding Information:

This research was funded by the Chinese National 973 Program (2007CB411307), Chinese NSFC Grant (40730315), and Hong Kong RGC grants (7063/06P, 7055/05P, 7066/07P and 7053/08P). The study was also partly supported by the CAS/SAFEA International Partnership Program for Creative Research Teams. The final version of the paper has benefited from perspective comments of three anonymous journal reviewers and the Editor Nelson Eby.

References

 

DC FieldValueLanguage
dc.contributor.authorHe, Yen_US
dc.contributor.authorZhao, Gen_US
dc.contributor.authorSun, Men_US
dc.contributor.authorHan, Yen_US
dc.date.accessioned2012-06-26T06:20:14Z-
dc.date.available2012-06-26T06:20:14Z-
dc.date.issued2010en_US
dc.identifier.citationLithos, 2010, v. 114 n. 1-2, p. 186-199en_US
dc.identifier.issn0024-4937en_US
dc.identifier.urihttp://hdl.handle.net/10722/151296-
dc.description.abstractAs part of the Xiong'er volcanic belt along the southern margin of the North China Craton, volcanic rocks in the Xiaoshan and Waifangshan areas have a compositional range from the basaltic andesite, andesite, dacite to rhyolite, which display consistent variation trends in terms of their major and trace elements and Sr-Nd isotopic compositions. The variable Yb contents with nearly constant La/Yb and Tb/Yb ratios of volcanic rocks in two areas suggest that the fractional crystallization may have played an important role in the differentiation from the basaltic andesite, through andesite and dacite, to rhyolite. The volcanic rocks in these two areas are characterized by the LILE and LREE enrichments and negative HFSE anomalies, implying hydrous melting of a mantle wedge in a subduction zone. Variable Sr/Nd ratios of the basaltic andesite and andesite are interpreted as a result of the fluid addition from a subducting slab. Non-radiogenic Nd isotopic compositions as well as high Zr/Y and Nb/Y ratios suggest that the volcanic rocks in these areas were derived from an enriched mantle source. On the other hand, the volcanic rocks of the basaltic andesite and andesite possess markedly higher Fe-Ti and HFSE concentrations than those of typical intra-oceanic arcs, implying that the mantle source from which the volcanic rocks were derived was metasomatised by siliceous melts during the Archean to Paleoproterozoic subduction/collision in the Trans-North China Orogen. These data suggest that in the Paleo-Mesoproterozoic, the southern margin of the North China Craton was most likely an Andean-type continental arc in which slab dehydration not only induced the melting of a pre-existing metasomatised mantle source, but also released LILE-enriched fluids into the mantle source, masking the inherent HFSE-enriched characteristics of the volcanic rocks along the southern margin of the craton. The results of this study indicate that the North China Craton, like many other continental components (e.g. North America, Greenland, Baltica, Amazonia, Australia, etc.) of the supercontinent Columbia (Nuna), also underwent a subduction-related outgrowth along its southern margin during the Paleo-Mesoproterozoic time. © 2009 Elsevier B.V. All rights reserved.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/lithosen_US
dc.relation.ispartofLithosen_US
dc.subjectNorth China Cratonen_US
dc.subjectPaleo-Mesoproterozoicen_US
dc.subjectSubductionen_US
dc.subjectSupercontinent Columbia (Nuna)en_US
dc.subjectVolcanic Rocksen_US
dc.titlePetrogenesis and tectonic setting of volcanic rocks in the Xiaoshan and Waifangshan areas along the southern margin of the North China Craton: Constraints from bulk-rock geochemistry and Sr-Nd isotopic compositionen_US
dc.typeArticleen_US
dc.identifier.emailZhao, G:gzhao@hkucc.hku.hken_US
dc.identifier.emailSun, M:minsun@hku.hken_US
dc.identifier.authorityZhao, G=rp00842en_US
dc.identifier.authoritySun, M=rp00780en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.lithos.2009.08.008en_US
dc.identifier.scopuseid_2-s2.0-71549134624en_US
dc.identifier.hkuros175405-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-71549134624&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume114en_US
dc.identifier.issue1-2en_US
dc.identifier.spage186en_US
dc.identifier.epage199en_US
dc.identifier.isiWOS:000274378300013-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridHe, Y=8678944900en_US
dc.identifier.scopusauthoridZhao, G=7403296321en_US
dc.identifier.scopusauthoridSun, M=25932315800en_US
dc.identifier.scopusauthoridHan, Y=17434130100en_US
dc.identifier.citeulike5721544-

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