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Article: Components and episodic growth of Precambrian crust in the Cathaysia Block, South China: Evidence from U-Pb ages and Hf isotopes of zircons in Neoproterozoic sediments

TitleComponents and episodic growth of Precambrian crust in the Cathaysia Block, South China: Evidence from U-Pb ages and Hf isotopes of zircons in Neoproterozoic sediments
Authors
KeywordsCathaysia Block
Cathaysia Tectonic Units
Precambrian Crust Growth
Zircon U-Pb-Hf Isotopes
Issue Date2010
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/precamres
Citation
Precambrian Research, 2010, v. 181 n. 1-4, p. 97-114 How to Cite?
AbstractDetailed LAM-ICPMS U-Pb dating and LAM-MC-ICPMS Lu-Hf isotope analysis were carried out on zircons from nine samples of basement metamorphic rocks in the southern Cathaysia Block, South China. The chemical compositions of these metamorphic rocks and zircon morphology indicate that their protoliths were sedimentary; zircon U-Pb dating results show they mainly formed during the late Neoproterozoic.The Precambrian crust of the Cathaysia Block can be divided into two distinct tectonic domains, the Wuyishan terrane to the northeast and the Nanling-Yunkai terrane to the southwest. The nearly E-W boundary between these two terranes is also supported by geophysical, petrological and geochemical evidence, and the basement rocks of the two terranes are comprised of different components. The Wuyishan terrane is characterized by dominant Paleoproterozoic (1.86. Ga) and lesser Neoarchean magmatism, and the southern-central part of the terrane suffered strong Neoproterozoic and early Paleozoic tectonothermal reworking. The zircon data suggest that there were five important episodes of juvenile crust generation (3.6. Ga, 2.8. Ga, 2.6-2.4. Ga, 1.85. Ga and 0.8-0.7. Ga) in the Wuyishan terrane. Strong Paleoproterozoic (1.85. Ga) magmatism in northern Wuyishan and Neoproterozoic (0.8-0.7. Ga) magmatism in central and southern Wuyishan both principally involved the remelting of old crust with minor input of juvenile material.In contrast, the Nanling-Yunkai terrane contains abundant Neoarchean and Grenvillian zircons, some evidence of Mesoproterozoic activity and rare Paleo- to Meso-Archean and Neoproterozoic zircons. U-Pb ages and Hf-isotopic compositions of the detrital zircons from the late Neoproterozoic to early Paleozoic meta-sedimentary rocks in the Nanling-Yunkai area suggest that the growth of juvenile crust mainly occurred at ∼3.6. Ga, ∼3.3. Ga, 2.5-2.6. Ga, ∼1.6. Ga, ∼1.0. Ga and 0.8-0.7. Ga. Neoarchaean (2.6-2.5. Ga), Grenvillian (∼1.0. Ga) and Neoproterozoic (0.8-0.7. Ga) magmatism mainly involved the recycling of old crust. Minor remnants of ∼4.1. Ga crust may remain in the terrane. This crustal history is distinct from that of the Wuyishan terrane and analogous to those recorded for the eastern India-East Antarctic domain of northern Gondwanaland, suggesting that they probably were once linked. © 2010 Elsevier B.V.
Persistent Identifierhttp://hdl.handle.net/10722/151309
ISSN
2015 Impact Factor: 4.037
2015 SCImago Journal Rankings: 3.214
ISI Accession Number ID
Funding AgencyGrant Number
ARC
DEST Systemic Infrastructure
Macquarie University
Industry sources
NSF of China40672125
40634022
40972127
State Key Laboratory for Mineral Deposits Research (Nanjing University)2008-I-01
Funding Information:

Analytical work was carried out at GEMOC, Earth and Planetary Sciences, Macquarie University, using instruments funded by ARC LIEF, DEST Systemic Infrastructure, Macquarie University and Industry sources. Norman Pearson and Suzie Elhlou are thanked for their assistance in LAM-ICPMS and LAM-MC-ICPMS analyses in GEMOC. We also thank L. Zhao, L. Xie and Z. Tan for assisting with field trips and sample collection. Two anonymous reviewers are thanked for their constructive comments. This work was supported by the NSF of China (Grant Nos. 40672125, 40634022 and 40972127) and ARC Discovery and ARC IREX grants (S.Y. O'Reilly and W.L. Griffin). This study is also supported by a grant (no. 2008-I-01) from the State Key Laboratory for Mineral Deposits Research (Nanjing University). This is publication No. 660 from the National Key Centre for Geochemical Evolution and Metallogeny of Continents (www.es.mq.edu.au/GEMOC/).

References

 

DC FieldValueLanguage
dc.contributor.authorYu, JHen_US
dc.contributor.authorO'reilly, SYen_US
dc.contributor.authorWang, Len_US
dc.contributor.authorGriffin, WLen_US
dc.contributor.authorZhou, MFen_US
dc.contributor.authorZhang, Men_US
dc.contributor.authorShu, Len_US
dc.date.accessioned2012-06-26T06:20:25Z-
dc.date.available2012-06-26T06:20:25Z-
dc.date.issued2010en_US
dc.identifier.citationPrecambrian Research, 2010, v. 181 n. 1-4, p. 97-114en_US
dc.identifier.issn0301-9268en_US
dc.identifier.urihttp://hdl.handle.net/10722/151309-
dc.description.abstractDetailed LAM-ICPMS U-Pb dating and LAM-MC-ICPMS Lu-Hf isotope analysis were carried out on zircons from nine samples of basement metamorphic rocks in the southern Cathaysia Block, South China. The chemical compositions of these metamorphic rocks and zircon morphology indicate that their protoliths were sedimentary; zircon U-Pb dating results show they mainly formed during the late Neoproterozoic.The Precambrian crust of the Cathaysia Block can be divided into two distinct tectonic domains, the Wuyishan terrane to the northeast and the Nanling-Yunkai terrane to the southwest. The nearly E-W boundary between these two terranes is also supported by geophysical, petrological and geochemical evidence, and the basement rocks of the two terranes are comprised of different components. The Wuyishan terrane is characterized by dominant Paleoproterozoic (1.86. Ga) and lesser Neoarchean magmatism, and the southern-central part of the terrane suffered strong Neoproterozoic and early Paleozoic tectonothermal reworking. The zircon data suggest that there were five important episodes of juvenile crust generation (3.6. Ga, 2.8. Ga, 2.6-2.4. Ga, 1.85. Ga and 0.8-0.7. Ga) in the Wuyishan terrane. Strong Paleoproterozoic (1.85. Ga) magmatism in northern Wuyishan and Neoproterozoic (0.8-0.7. Ga) magmatism in central and southern Wuyishan both principally involved the remelting of old crust with minor input of juvenile material.In contrast, the Nanling-Yunkai terrane contains abundant Neoarchean and Grenvillian zircons, some evidence of Mesoproterozoic activity and rare Paleo- to Meso-Archean and Neoproterozoic zircons. U-Pb ages and Hf-isotopic compositions of the detrital zircons from the late Neoproterozoic to early Paleozoic meta-sedimentary rocks in the Nanling-Yunkai area suggest that the growth of juvenile crust mainly occurred at ∼3.6. Ga, ∼3.3. Ga, 2.5-2.6. Ga, ∼1.6. Ga, ∼1.0. Ga and 0.8-0.7. Ga. Neoarchaean (2.6-2.5. Ga), Grenvillian (∼1.0. Ga) and Neoproterozoic (0.8-0.7. Ga) magmatism mainly involved the recycling of old crust. Minor remnants of ∼4.1. Ga crust may remain in the terrane. This crustal history is distinct from that of the Wuyishan terrane and analogous to those recorded for the eastern India-East Antarctic domain of northern Gondwanaland, suggesting that they probably were once linked. © 2010 Elsevier B.V.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/precamresen_US
dc.relation.ispartofPrecambrian Researchen_US
dc.subjectCathaysia Blocken_US
dc.subjectCathaysia Tectonic Unitsen_US
dc.subjectPrecambrian Crust Growthen_US
dc.subjectZircon U-Pb-Hf Isotopesen_US
dc.titleComponents and episodic growth of Precambrian crust in the Cathaysia Block, South China: Evidence from U-Pb ages and Hf isotopes of zircons in Neoproterozoic sedimentsen_US
dc.typeArticleen_US
dc.identifier.emailZhou, MF:mfzhou@hkucc.hku.hken_US
dc.identifier.authorityZhou, MF=rp00844en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.precamres.2010.05.016en_US
dc.identifier.scopuseid_2-s2.0-77955056395en_US
dc.identifier.hkuros177754-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77955056395&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume181en_US
dc.identifier.issue1-4en_US
dc.identifier.spage97en_US
dc.identifier.epage114en_US
dc.identifier.isiWOS:000280983000006-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridYu, JH=15125142600en_US
dc.identifier.scopusauthoridO'Reilly, SY=7103188930en_US
dc.identifier.scopusauthoridWang, L=49061465700en_US
dc.identifier.scopusauthoridGriffin, WL=35229299300en_US
dc.identifier.scopusauthoridZhou, MF=7403506005en_US
dc.identifier.scopusauthoridZhang, M=36072753300en_US
dc.identifier.scopusauthoridShu, L=7102761685en_US
dc.identifier.citeulike7271094-

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