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Article: Geochronology and Hf isotopes of zircon from volcanic rocks of the Shuangqiaoshan Group, South China: Implications for the Neoproterozoic tectonic evolution of the eastern Jiangnan orogen

TitleGeochronology and Hf isotopes of zircon from volcanic rocks of the Shuangqiaoshan Group, South China: Implications for the Neoproterozoic tectonic evolution of the eastern Jiangnan orogen
Authors
KeywordsHf Isotopes
Jiangnan Orogen
Neoproterozoic
Shuangqiaoshan Group
Zircon Geochronology
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jcr
Citation
Gondwana Research, 2008, v. 14 n. 3, p. 355-367 How to Cite?
AbstractThe Shuangqiaoshan Group is an important stratigraphic unit in the Jiangnan orogen, however, prior to this study its age was unclear. Zircon from the intruding gabbros, interleaved quartz-keratophyres and tuffs yielded ages of 801 ± 4 Ma, 878 ± 5 Ma and 879 ± 6 Ma, respectively. The ages of the quartz-keratophyres and tuffs suggest that the depositional age for the Shuangqiaoshan Group is ca. 880 Ma, rather than Mesoproterozoic as previously suggested. This Shuangqiaoshan Group, and temporally equivalent folded sedimentary sequences along the Jiangnan orogen, may have possibly formed within a back-arc foreland basin setting. The ca. 800 Ma gabbros have arc-like geochemical features, high positive εHf(t) values (mean value of 5.2 ± 0.7), and Mesoproterozoic Hf model ages of 1163 ± 26 Ma, suggesting that they may generate from the partial melting of juvenile crustal materials resulting from the early subduction. Zircon from the interleaved quartz-keratophyres and tuffs have high positive εHf(t) values, ranging from 3.3 to 18.8. They, as well as their equivalent volcanic rocks, may have acted as a main source for 880-850 Ma detrital zircon in folded sequences along the Jiangnan orogen, and their mantle source would represent the depleted mantle end-member for Neoproterozoic crustal-mantle interactions in the Jiangnan orogen. © 2008 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/151251
ISSN
2015 Impact Factor: 8.743
2015 SCImago Journal Rankings: 4.949
ISI Accession Number ID
Funding AgencyGrant Number
National Natural Science Foundation of China40221301
40429001
40572039
CAS/SAFEA International Partnership Program for Creative Research Teams
China Ministry of Education1307011
Funding Information:

This research was financially supported by the National Natural Science Foundation of China (grants No. 40221301, 40429001 and 40572039). The study was also partly supported by the CAS/SAFEA International Partnership Program for Creative Research Teams and I I I Program (1307011) from the China Ministry of Education. We are grateful to Yusheng Wan and Benjamin Wade for their useful and constructive comments on the manuscript. We thank senior Engineer Lianhai Ling for his earnest direction and assistance on the field trip, Drs. Liewen Xie and Yueheng Yang for their help during Hf isotope analyses.

References

 

DC FieldValueLanguage
dc.contributor.authorWang, XLen_US
dc.contributor.authorZhao, Gen_US
dc.contributor.authorZhou, JCen_US
dc.contributor.authorLiu, Yen_US
dc.contributor.authorHu, Jen_US
dc.date.accessioned2012-06-26T06:19:20Z-
dc.date.available2012-06-26T06:19:20Z-
dc.date.issued2008en_US
dc.identifier.citationGondwana Research, 2008, v. 14 n. 3, p. 355-367en_US
dc.identifier.issn1342-937Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/151251-
dc.description.abstractThe Shuangqiaoshan Group is an important stratigraphic unit in the Jiangnan orogen, however, prior to this study its age was unclear. Zircon from the intruding gabbros, interleaved quartz-keratophyres and tuffs yielded ages of 801 ± 4 Ma, 878 ± 5 Ma and 879 ± 6 Ma, respectively. The ages of the quartz-keratophyres and tuffs suggest that the depositional age for the Shuangqiaoshan Group is ca. 880 Ma, rather than Mesoproterozoic as previously suggested. This Shuangqiaoshan Group, and temporally equivalent folded sedimentary sequences along the Jiangnan orogen, may have possibly formed within a back-arc foreland basin setting. The ca. 800 Ma gabbros have arc-like geochemical features, high positive εHf(t) values (mean value of 5.2 ± 0.7), and Mesoproterozoic Hf model ages of 1163 ± 26 Ma, suggesting that they may generate from the partial melting of juvenile crustal materials resulting from the early subduction. Zircon from the interleaved quartz-keratophyres and tuffs have high positive εHf(t) values, ranging from 3.3 to 18.8. They, as well as their equivalent volcanic rocks, may have acted as a main source for 880-850 Ma detrital zircon in folded sequences along the Jiangnan orogen, and their mantle source would represent the depleted mantle end-member for Neoproterozoic crustal-mantle interactions in the Jiangnan orogen. © 2008 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/jcren_US
dc.relation.ispartofGondwana Researchen_US
dc.subjectHf Isotopesen_US
dc.subjectJiangnan Orogenen_US
dc.subjectNeoproterozoicen_US
dc.subjectShuangqiaoshan Groupen_US
dc.subjectZircon Geochronologyen_US
dc.titleGeochronology and Hf isotopes of zircon from volcanic rocks of the Shuangqiaoshan Group, South China: Implications for the Neoproterozoic tectonic evolution of the eastern Jiangnan orogenen_US
dc.typeArticleen_US
dc.identifier.emailWang, X: xlwangnju@yahoo.com.cnen_US
dc.identifier.emailZhao, G: gzhao@hkucc.hku.hk-
dc.identifier.authorityZhao, G=rp00842en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.gr.2008.03.001en_US
dc.identifier.scopuseid_2-s2.0-48349103024en_US
dc.identifier.hkuros154942-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-48349103024&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume14en_US
dc.identifier.issue3en_US
dc.identifier.spage355en_US
dc.identifier.epage367en_US
dc.identifier.isiWOS:000258812500006-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridWang, XL=36926796000en_US
dc.identifier.scopusauthoridZhao, G=7403296321en_US
dc.identifier.scopusauthoridZhou, JC=49161353900en_US
dc.identifier.scopusauthoridLiu, Y=35253783000en_US
dc.identifier.scopusauthoridHu, J=49261137900en_US

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