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Article: U-Pb and Hf isotopic study of zircons from migmatised amphibolites in the Cathaysia Block: Implications for the early Paleozoic peak tectonothermal event in Southeastern China

TitleU-Pb and Hf isotopic study of zircons from migmatised amphibolites in the Cathaysia Block: Implications for the early Paleozoic peak tectonothermal event in Southeastern China
Authors
KeywordsAmphibolite
Caledonian tectonothermal event
Cathaysia Block
Hf isotopes
Migmatization
Zircon U-Pb age
Issue Date2011
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jcr
Citation
Gondwana Research, 2011, v. 19 n. 1, p. 191-201 How to Cite?
AbstractAmphibolites occur in a number of localities in the Cathaysia Block, some of them have been migmatised and their protoliths represent basaltic magmas erupted in various tectonic settings. Four migmatised amphibolites were collected from Jiangxi and Fujian Provinces. Cathodo-luminescence images of zircons extracted from the representative amphibolites show unzoned or sector-zoned structure. LA-ICP-MS analysis indicates that most zircons have high Th/U ratios and yield U-Pb zircon ages of 446. ± 5, 435. ± 2, 434. ± 4 and 423. ± 2. Ma, respectively. Lu-Hf isotopic analysis on these zircons gives Hf model ages ranging from 900 to 1200. Ma. Based on lithological observations and previously published geochronological data, we interpret that these U-Pb ages record an important tectonothermal event that led to the migmatization. This early Paleozoic (Caledonian) tectonothermal event in the Southeastern China has a great tectonic implication for the evolutionary history of the Cathaysia Block. © 2010 International Association for Gondwana Research.
Persistent Identifierhttp://hdl.handle.net/10722/139181
ISSN
2015 Impact Factor: 8.743
2015 SCImago Journal Rankings: 4.949
ISI Accession Number ID
Funding AgencyGrant Number
Hong Kong Research Grant CouncilHKU 7041/05
National Nature Sciences Foundation of China40721063
40825009
40830319
Chinese Academy of ScienceKZCX2-YW-128
KZCX1-YW-15-1
Chinese Ministry of Land and Resources200811015
HKU
Funding Information:

The authors appreciate the assistance of F.F. Zhang and M.N. Dai for Hf analysis. J.F. Gao, Y.H. He and S.H. Yang are thanked for their helpful discussion and AM. Zhang and Y.Z. Zhang for help in the field. We thank Prof. L.S. Shu and Prof. S.Z. Li for their comments that help improvement of the presentation. This study was financially supported by research grants from the Hong Kong Research Grant Council (HKU 7041/05), the National Nature Sciences Foundation of China (40721063, 40825009, and 40830319), the Chinese Academy of Science (KZCX2-YW-128 and KZCX1-YW-15-1) and the Chinese Ministry of Land and Resources (200811015). A HKU postgraduate studentship to Longming Li is gratefully acknowledged.

References

 

DC FieldValueLanguage
dc.contributor.authorLi, LMen_HK
dc.contributor.authorSun, Men_HK
dc.contributor.authorWang, Yen_HK
dc.contributor.authorXing, Gen_HK
dc.contributor.authorZhao, Gen_HK
dc.contributor.authorLin, Sen_HK
dc.contributor.authorXia, Xen_HK
dc.contributor.authorChan, Len_HK
dc.contributor.authorZhang, Fen_HK
dc.contributor.authorWong, Jen_HK
dc.date.accessioned2011-09-23T05:46:24Z-
dc.date.available2011-09-23T05:46:24Z-
dc.date.issued2011en_HK
dc.identifier.citationGondwana Research, 2011, v. 19 n. 1, p. 191-201en_HK
dc.identifier.issn1342-937Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/139181-
dc.description.abstractAmphibolites occur in a number of localities in the Cathaysia Block, some of them have been migmatised and their protoliths represent basaltic magmas erupted in various tectonic settings. Four migmatised amphibolites were collected from Jiangxi and Fujian Provinces. Cathodo-luminescence images of zircons extracted from the representative amphibolites show unzoned or sector-zoned structure. LA-ICP-MS analysis indicates that most zircons have high Th/U ratios and yield U-Pb zircon ages of 446. ± 5, 435. ± 2, 434. ± 4 and 423. ± 2. Ma, respectively. Lu-Hf isotopic analysis on these zircons gives Hf model ages ranging from 900 to 1200. Ma. Based on lithological observations and previously published geochronological data, we interpret that these U-Pb ages record an important tectonothermal event that led to the migmatization. This early Paleozoic (Caledonian) tectonothermal event in the Southeastern China has a great tectonic implication for the evolutionary history of the Cathaysia Block. © 2010 International Association for Gondwana Research.en_HK
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jcren_HK
dc.relation.ispartofGondwana Researchen_HK
dc.subjectAmphiboliteen_HK
dc.subjectCaledonian tectonothermal eventen_HK
dc.subjectCathaysia Blocken_HK
dc.subjectHf isotopesen_HK
dc.subjectMigmatizationen_HK
dc.subjectZircon U-Pb ageen_HK
dc.titleU-Pb and Hf isotopic study of zircons from migmatised amphibolites in the Cathaysia Block: Implications for the early Paleozoic peak tectonothermal event in Southeastern Chinaen_HK
dc.typeArticleen_HK
dc.identifier.emailSun, M: minsun@hku.hken_HK
dc.identifier.emailZhao, G: gzhao@hkucc.hku.hken_HK
dc.identifier.emailXia, X: xpxia@hotmail.comen_HK
dc.identifier.emailChan, L: chanls@hku.hken_HK
dc.identifier.authoritySun, M=rp00780en_HK
dc.identifier.authorityZhao, G=rp00842en_HK
dc.identifier.authorityXia, X=rp00815en_HK
dc.identifier.authorityChan, L=rp00665en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.gr.2010.03.009en_HK
dc.identifier.scopuseid_2-s2.0-78650692195en_HK
dc.identifier.hkuros193903en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78650692195&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume19en_HK
dc.identifier.issue1en_HK
dc.identifier.spage191en_HK
dc.identifier.epage201en_HK
dc.identifier.isiWOS:000286960100015-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridLi, LM=49963916100en_HK
dc.identifier.scopusauthoridSun, M=25932315800en_HK
dc.identifier.scopusauthoridWang, Y=36496272800en_HK
dc.identifier.scopusauthoridXing, G=7103115605en_HK
dc.identifier.scopusauthoridZhao, G=7403296321en_HK
dc.identifier.scopusauthoridLin, S=7407611598en_HK
dc.identifier.scopusauthoridXia, X=35241486400en_HK
dc.identifier.scopusauthoridChan, L=7403540528en_HK
dc.identifier.scopusauthoridZhang, F=35306289700en_HK
dc.identifier.scopusauthoridWong, J=35207628900en_HK

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