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Article: U-Pb and Hf isotopic compositions of detrital zircons from the paragneisses of the Quanji Massif, NW China: Implications for its early tectonic evolutionary history

TitleU-Pb and Hf isotopic compositions of detrital zircons from the paragneisses of the Quanji Massif, NW China: Implications for its early tectonic evolutionary history
Authors
KeywordsDetrital zircon U–Pb dating
Hf isotope compositions
Trace elements in zircon
Crustal growth
Quanji Massif
Tarim–Yangtze–North China cratons
Issue Date2012
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jseaes
Citation
Journal of Asian Earth Sciences, 2012, v. 54-55, p. 110-130 How to Cite?
AbstractThe Quanji Massif is a cratonic fragment located on the northeastern margin of the Qinghai-Tibetan Plateau in western Qinghai Province, northwest China (Fig. 1). This massif consists of pre-Neoproterozoic crystalline basement unconformably overlain by mid- to late-Neoproterozoic and Cambrian strata. The basement is dominantly made up of the Delingha complex and the supracrustal Dakendaban Group. The Delingha complex is made up of 2.24–2.39 Ga granitic gneisses with enclaves of dominant amphibolite and minor felsic gneisses as well as granulites. The supracrustal Dakendaban group is in tectonic contact with the Delingha Complex, and can be divided into the lower and upper Dakendaban sub-Groups. Data from detrital zircons show that the protolith rocks of these two sub-groups were deposited after ~2.32 Ga, and ~2.11 Ga, respectively. The detrital zircon age and Hf isotopic data and geological correlations suggest that the Quanji Massif was possibly fragmented from the Tarim Craton, and the Delingha complex was probably uplifted to become the major sedimentary source for the upper Dakendaban sub-group at ~2.11 Ga. Our zircon Hf-isotope compositions demonstrate important crustal growth at 2.6–2.7 Ga and ~2.5 Ga. Together with the important magmatic activity at ~2.2–2.4 Ga and geological data, our results seem to suggest that the Tarim Craton was part of the North China Craton in its early evolutionary history but rifted away and joined the Yangtze Craton prior to the Neoproterozoic. 2012 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/159511
ISSN
2014 Impact Factor: 2.741
2014 SCImago Journal Rankings: 1.485
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, Nen_US
dc.contributor.authorZhang, Len_US
dc.contributor.authorSun, Men_US
dc.contributor.authorWang, Qen_US
dc.contributor.authorKusky, TMen_US
dc.date.accessioned2012-08-16T05:51:11Z-
dc.date.available2012-08-16T05:51:11Z-
dc.date.issued2012en_US
dc.identifier.citationJournal of Asian Earth Sciences, 2012, v. 54-55, p. 110-130en_US
dc.identifier.issn1367-9120-
dc.identifier.urihttp://hdl.handle.net/10722/159511-
dc.description.abstractThe Quanji Massif is a cratonic fragment located on the northeastern margin of the Qinghai-Tibetan Plateau in western Qinghai Province, northwest China (Fig. 1). This massif consists of pre-Neoproterozoic crystalline basement unconformably overlain by mid- to late-Neoproterozoic and Cambrian strata. The basement is dominantly made up of the Delingha complex and the supracrustal Dakendaban Group. The Delingha complex is made up of 2.24–2.39 Ga granitic gneisses with enclaves of dominant amphibolite and minor felsic gneisses as well as granulites. The supracrustal Dakendaban group is in tectonic contact with the Delingha Complex, and can be divided into the lower and upper Dakendaban sub-Groups. Data from detrital zircons show that the protolith rocks of these two sub-groups were deposited after ~2.32 Ga, and ~2.11 Ga, respectively. The detrital zircon age and Hf isotopic data and geological correlations suggest that the Quanji Massif was possibly fragmented from the Tarim Craton, and the Delingha complex was probably uplifted to become the major sedimentary source for the upper Dakendaban sub-group at ~2.11 Ga. Our zircon Hf-isotope compositions demonstrate important crustal growth at 2.6–2.7 Ga and ~2.5 Ga. Together with the important magmatic activity at ~2.2–2.4 Ga and geological data, our results seem to suggest that the Tarim Craton was part of the North China Craton in its early evolutionary history but rifted away and joined the Yangtze Craton prior to the Neoproterozoic. 2012 Elsevier Ltd. All rights reserved.-
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jseaes-
dc.relation.ispartofJournal of Asian Earth Sciencesen_US
dc.subjectDetrital zircon U–Pb dating-
dc.subjectHf isotope compositions-
dc.subjectTrace elements in zircon-
dc.subjectCrustal growth-
dc.subjectQuanji Massif-
dc.subjectTarim–Yangtze–North China cratons-
dc.titleU-Pb and Hf isotopic compositions of detrital zircons from the paragneisses of the Quanji Massif, NW China: Implications for its early tectonic evolutionary historyen_US
dc.typeArticleen_US
dc.identifier.emailChen, N: chenns77@hku.hken_US
dc.identifier.emailSun, M: minsun@hku.hken_US
dc.identifier.authoritySun, M=rp00780en_US
dc.identifier.doi10.1016/j.jseaes.2012.04.006-
dc.identifier.scopuseid_2-s2.0-84862188491-
dc.identifier.hkuros205436en_US
dc.identifier.volume54-55en_US
dc.identifier.spage110en_US
dc.identifier.epage130en_US
dc.identifier.isiWOS:000307321300011-
dc.publisher.placeUnited Kingdom-

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