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Article: Zircon Lu-Hf isotopic constraints on Neoproterozoic subduction-related crustal growth along the western margin of the Yangtze Block, South China

TitleZircon Lu-Hf isotopic constraints on Neoproterozoic subduction-related crustal growth along the western margin of the Yangtze Block, South China
Authors
KeywordsActive margins
Crustal growth
Neoproterozoic magmatism
South China
Zircon Hf isotope
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/precamres
Citation
Precambrian Research, 2008, v. 163 n. 3-4, p. 189-209 How to Cite?
AbstractVoluminous Neoproterozoic igneous rocks along the western margin of the Yangtze Block, South China, provide an ideal opportunity for examining the nature of the mantle source, petrogenesis of the felsic plutons and processes and timing of crustal growth. The Dadukou, Tongde, Gaojiacun and Shaba mafic plutons, and Datian and Dajianshan adakitic plutons were selected for zircon Lu-Hf isotope analysis. Zircons from the mafic plutons have εHf(t) values ranging from 1.86 to 11.63, with average εHf(t) values of the different samples ranging from 4.78 ± 0.42 to 7.60 ± 1.1. Their single-stage model ages range from 0.86 to 1.28 Ga. The two adakitic plutons have εHf(t) values ranging from 2.26 to 11.68 and single-stage model ages from 0.86 to 1.24 Ga. Our data further confirm that the mafic plutons were extracted from depleted mantle sources, whereas the Datian and Dajianshan adakitic plutons were products of melting of a subducted oceanic slab. The arc-geochemical affinity, relatively high 143Nd/144Nd ratios and high zircon εHf(t) values, as well as the relatively young Hf single-stage model ages of these Neoproterozoic plutons suggest that the continental crustal growth in the region was related to oceanic subduction, rather than upwelling of a mantle plume in a rifting setting. The Neoproterozoic magmatism along the western margin of the Yangtze Block lasted more than 200 My, not show episodic emplacement and contrasting zircon Hf isotopes, suggesting that continental crustal growth in South China was continuously resulted from subduction. © 2007 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/72461
ISSN
2015 Impact Factor: 4.037
2015 SCImago Journal Rankings: 3.214
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhao, JHen_HK
dc.contributor.authorZhou, MFen_HK
dc.contributor.authorYan, DPen_HK
dc.contributor.authorYang, YHen_HK
dc.contributor.authorSun, Men_HK
dc.date.accessioned2010-09-06T06:42:03Z-
dc.date.available2010-09-06T06:42:03Z-
dc.date.issued2008en_HK
dc.identifier.citationPrecambrian Research, 2008, v. 163 n. 3-4, p. 189-209en_HK
dc.identifier.issn0301-9268en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72461-
dc.description.abstractVoluminous Neoproterozoic igneous rocks along the western margin of the Yangtze Block, South China, provide an ideal opportunity for examining the nature of the mantle source, petrogenesis of the felsic plutons and processes and timing of crustal growth. The Dadukou, Tongde, Gaojiacun and Shaba mafic plutons, and Datian and Dajianshan adakitic plutons were selected for zircon Lu-Hf isotope analysis. Zircons from the mafic plutons have εHf(t) values ranging from 1.86 to 11.63, with average εHf(t) values of the different samples ranging from 4.78 ± 0.42 to 7.60 ± 1.1. Their single-stage model ages range from 0.86 to 1.28 Ga. The two adakitic plutons have εHf(t) values ranging from 2.26 to 11.68 and single-stage model ages from 0.86 to 1.24 Ga. Our data further confirm that the mafic plutons were extracted from depleted mantle sources, whereas the Datian and Dajianshan adakitic plutons were products of melting of a subducted oceanic slab. The arc-geochemical affinity, relatively high 143Nd/144Nd ratios and high zircon εHf(t) values, as well as the relatively young Hf single-stage model ages of these Neoproterozoic plutons suggest that the continental crustal growth in the region was related to oceanic subduction, rather than upwelling of a mantle plume in a rifting setting. The Neoproterozoic magmatism along the western margin of the Yangtze Block lasted more than 200 My, not show episodic emplacement and contrasting zircon Hf isotopes, suggesting that continental crustal growth in South China was continuously resulted from subduction. © 2007 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/precamresen_HK
dc.relation.ispartofPrecambrian Researchen_HK
dc.rightsPrecambrian Research . Copyright © Elsevier BV.en_HK
dc.subjectActive marginsen_HK
dc.subjectCrustal growthen_HK
dc.subjectNeoproterozoic magmatismen_HK
dc.subjectSouth Chinaen_HK
dc.subjectZircon Hf isotopeen_HK
dc.titleZircon Lu-Hf isotopic constraints on Neoproterozoic subduction-related crustal growth along the western margin of the Yangtze Block, South Chinaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0301-9268&volume=163&spage=189–209&epage=&date=2008&atitle=Zircon+Lu-Hf+isotopic+constraints+on+Neoproterozoic+subduction-related+crustal+growth+along+the+western+margin+of+the+Yangtze+Block,+South+China.+en_HK
dc.identifier.emailZhou, MF:mfzhou@hkucc.hku.hken_HK
dc.identifier.emailSun, M:minsun@hku.hken_HK
dc.identifier.authorityZhou, MF=rp00844en_HK
dc.identifier.authoritySun, M=rp00780en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.precamres.2007.11.003en_HK
dc.identifier.scopuseid_2-s2.0-43049171651en_HK
dc.identifier.hkuros144280en_HK
dc.identifier.volume163en_HK
dc.identifier.issue3-4en_HK
dc.identifier.spage189en_HK
dc.identifier.epage209en_HK
dc.identifier.isiWOS:000256930500001-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridZhao, JH=49061691300en_HK
dc.identifier.scopusauthoridZhou, MF=7403506005en_HK
dc.identifier.scopusauthoridYan, DP=36683417500en_HK
dc.identifier.scopusauthoridYang, YH=14626834200en_HK
dc.identifier.scopusauthoridSun, M=25932315800en_HK

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