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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
Title | 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 | ||||||||
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Authors | |||||||||
Keywords | Hf Isotopes Jiangnan Orogen Neoproterozoic Shuangqiaoshan Group Zircon Geochronology | ||||||||
Issue Date | 2008 | ||||||||
Publisher | Elsevier 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? | ||||||||
Abstract | The 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 Identifier | http://hdl.handle.net/10722/151251 | ||||||||
ISSN | 2023 Impact Factor: 7.2 2023 SCImago Journal Rankings: 1.742 | ||||||||
ISI Accession Number ID |
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 Field | Value | Language |
---|---|---|
dc.contributor.author | Wang, XL | en_US |
dc.contributor.author | Zhao, G | en_US |
dc.contributor.author | Zhou, JC | en_US |
dc.contributor.author | Liu, Y | en_US |
dc.contributor.author | Hu, J | en_US |
dc.date.accessioned | 2012-06-26T06:19:20Z | - |
dc.date.available | 2012-06-26T06:19:20Z | - |
dc.date.issued | 2008 | en_US |
dc.identifier.citation | Gondwana Research, 2008, v. 14 n. 3, p. 355-367 | en_US |
dc.identifier.issn | 1342-937X | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/151251 | - |
dc.description.abstract | The 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.language | eng | en_US |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jcr | en_US |
dc.relation.ispartof | Gondwana Research | en_US |
dc.subject | Hf Isotopes | en_US |
dc.subject | Jiangnan Orogen | en_US |
dc.subject | Neoproterozoic | en_US |
dc.subject | Shuangqiaoshan Group | en_US |
dc.subject | Zircon Geochronology | en_US |
dc.title | 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 | en_US |
dc.type | Article | en_US |
dc.identifier.email | Wang, X: xlwangnju@yahoo.com.cn | en_US |
dc.identifier.email | Zhao, G: gzhao@hkucc.hku.hk | - |
dc.identifier.authority | Zhao, G=rp00842 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1016/j.gr.2008.03.001 | en_US |
dc.identifier.scopus | eid_2-s2.0-48349103024 | en_US |
dc.identifier.hkuros | 154942 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-48349103024&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 14 | en_US |
dc.identifier.issue | 3 | en_US |
dc.identifier.spage | 355 | en_US |
dc.identifier.epage | 367 | en_US |
dc.identifier.isi | WOS:000258812500006 | - |
dc.publisher.place | Netherlands | en_US |
dc.identifier.scopusauthorid | Wang, XL=36926796000 | en_US |
dc.identifier.scopusauthorid | Zhao, G=7403296321 | en_US |
dc.identifier.scopusauthorid | Zhou, JC=49161353900 | en_US |
dc.identifier.scopusauthorid | Liu, Y=35253783000 | en_US |
dc.identifier.scopusauthorid | Hu, J=49261137900 | en_US |
dc.identifier.issnl | 1342-937X | - |