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Article: Zircon Lu-Hf isotopic compositions of metaluminous and peralkaline A-type granitic plutons of the Emeishan large igneous province (SW China): Constraints on the mantle source

TitleZircon Lu-Hf isotopic compositions of metaluminous and peralkaline A-type granitic plutons of the Emeishan large igneous province (SW China): Constraints on the mantle source
Authors
KeywordsA-type granite
Metaluminous
Panxi region
Peralkaline
SW China
Zircon Lu-Hf isotope
Issue Date2009
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jseaes
Citation
Journal Of Asian Earth Sciences, 2009, v. 35 n. 1, p. 45-55 How to Cite?
AbstractPermian A-type granitoids of the Emeishan large igneous province (ELIP) in the Panxi region, SW China, are predominantly peralkaline and metaluminous in composition. In situ zircon Hf isotopic compositions along with whole rock trace element and Nd isotopic data are used to examine the probable source characteristics of these A-type granitic plutons. Zircons from the Baima and Taihe peralkaline plutons have weighted average εHf(T) values of +8.7 ± 0.4 and +9.2 ± 1.0, whereas the Woshui and Huangcao metaluminous plutons have differing εHf(T) values (+8.6 ± 0.2 and +5.8 ± 0.3, respectively). Previous studies have suggested that the plutons were derived by differentiation (e.g. fractionation or partial melting) of mafic magmas from an enriched mantle source similar to oceanic island basalt with little or no contribution from the crust (εNd(T) = +1.3 to +3.2, Zr/Nb = 0.9-14.4, Rb/Nb = 0.1-8.4 and Th/Ta = <4.0). Therefore, we interpret the Hf isotopic data of the Baima, Taihe, Woshui and Huangcao plutons to be indicative of the Emeishan mantle plume. The similar zircon εHf(T) values of the Woshui and Baima plutons indicates that spatially and temporally associated peralkaline and metaluminous A-type granitic rocks can originate from the same mantle source without crustal assimilation. © 2009 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/58695
ISSN
2015 Impact Factor: 2.647
2015 SCImago Journal Rankings: 1.393
ISI Accession Number ID
Funding AgencyGrant Number
Academia Sinica, Institute of Earth Sciences
Research Grant Council of Hong Kong
SARHKU7065/06P
Chinese 973 Project2007CB411401
Funding Information:

We acknowledge the constructive reviews by Jin-Hui Yang and Sun-Lin Chung and the editorial handling by Bor-Ming Jahn. The authors would like to thank Dr. Liang Qi and Ms. Xiao Fu for their analytical support at the University of Hong Kong. This study is supported by Academia Sinica, Institute of Earth Sciences and grants from the Research Grant Council of Hong Kong, SAR (HKU7065/06P) and Chinese 973 Project (2007CB411401).

References

 

DC FieldValueLanguage
dc.contributor.authorGregory Shellnutt, Jen_HK
dc.contributor.authorWang, CYen_HK
dc.contributor.authorZhou, MFen_HK
dc.contributor.authorYang, Yen_HK
dc.date.accessioned2010-05-31T03:35:10Z-
dc.date.available2010-05-31T03:35:10Z-
dc.date.issued2009en_HK
dc.identifier.citationJournal Of Asian Earth Sciences, 2009, v. 35 n. 1, p. 45-55en_HK
dc.identifier.issn1367-9120en_HK
dc.identifier.urihttp://hdl.handle.net/10722/58695-
dc.description.abstractPermian A-type granitoids of the Emeishan large igneous province (ELIP) in the Panxi region, SW China, are predominantly peralkaline and metaluminous in composition. In situ zircon Hf isotopic compositions along with whole rock trace element and Nd isotopic data are used to examine the probable source characteristics of these A-type granitic plutons. Zircons from the Baima and Taihe peralkaline plutons have weighted average εHf(T) values of +8.7 ± 0.4 and +9.2 ± 1.0, whereas the Woshui and Huangcao metaluminous plutons have differing εHf(T) values (+8.6 ± 0.2 and +5.8 ± 0.3, respectively). Previous studies have suggested that the plutons were derived by differentiation (e.g. fractionation or partial melting) of mafic magmas from an enriched mantle source similar to oceanic island basalt with little or no contribution from the crust (εNd(T) = +1.3 to +3.2, Zr/Nb = 0.9-14.4, Rb/Nb = 0.1-8.4 and Th/Ta = <4.0). Therefore, we interpret the Hf isotopic data of the Baima, Taihe, Woshui and Huangcao plutons to be indicative of the Emeishan mantle plume. The similar zircon εHf(T) values of the Woshui and Baima plutons indicates that spatially and temporally associated peralkaline and metaluminous A-type granitic rocks can originate from the same mantle source without crustal assimilation. © 2009 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jseaesen_HK
dc.relation.ispartofJournal of Asian Earth Sciencesen_HK
dc.subjectA-type graniteen_HK
dc.subjectMetaluminousen_HK
dc.subjectPanxi regionen_HK
dc.subjectPeralkalineen_HK
dc.subjectSW Chinaen_HK
dc.subjectZircon Lu-Hf isotopeen_HK
dc.titleZircon Lu-Hf isotopic compositions of metaluminous and peralkaline A-type granitic plutons of the Emeishan large igneous province (SW China): Constraints on the mantle sourceen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1367-9120&volume=35&issue=1&spage=45&epage=55&date=2009&atitle=Zircon+Lu-Hf+isotopic+compositions+of+metaluminous+and+peralkaline+A-type+granitic+plutons+of+the+Emeishan+large+igneous+province+(SW+China):+Constraints+on+the+mantle+sourceen_HK
dc.identifier.emailZhou, MF:mfzhou@hkucc.hku.hken_HK
dc.identifier.authorityZhou, MF=rp00844en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jseaes.2008.12.003en_HK
dc.identifier.scopuseid_2-s2.0-61449212834en_HK
dc.identifier.hkuros167326en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-61449212834&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume35en_HK
dc.identifier.issue1en_HK
dc.identifier.spage45en_HK
dc.identifier.epage55en_HK
dc.identifier.isiWOS:000264948700005-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridGregory Shellnutt, J=26027489400en_HK
dc.identifier.scopusauthoridWang, CY=34976092700en_HK
dc.identifier.scopusauthoridZhou, MF=7403506005en_HK
dc.identifier.scopusauthoridYang, Y=49061684300en_HK
dc.identifier.citeulike4621325-

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