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Article: Highly heterogeneous Late Mesozoic lithospheric mantle beneath the North China Craton: evidence from Sr–Nd–Pb isotopic systematics of mafic igneous rocks

TitleHighly heterogeneous Late Mesozoic lithospheric mantle beneath the North China Craton: evidence from Sr–Nd–Pb isotopic systematics of mafic igneous rocks
Authors
KeywordsMesozoic
Silicate melts
Heterogeneity
Isotopes
Continental lithosphere
Issue Date2004
PublisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=GEO
Citation
Geological Magazine, 2004, v. 141 n. 1, p. 55-62 How to Cite?
AbstractThe lithospheric mantle beneath the North China Craton changed dramatically in its geophysical and geochemical characteristics from Palaeozoic to Cenozoic times. This study uses samples of Mesozoic basalts and mafic intrusions from the North China Craton to investigate the nature of this mantle in Mesozoic times. Sr-Nd-Pb isotopic data demonstrate that the Late Mesozoic lithospheric mantle was extremely heterogeneous. In the central craton or the Luzhong region, it is slightly Sr-Nd isotopically enriched, beneath the Taihangshan region it has an EMI character (87Sr/86Sri = 0.7050-0.7066; εNd = -17--10), and beneath the Luxi-Jiaodong region, it possesses EM2-like characteristics (87Sr/86Sri up to 0.7114). Compositional variation with time is also apparent in the Mesozoic lithospheric mantle. Our data suggest that the old lithospheric mantle was modified during Mesozoic times by a silicic melt, where beneath the Luxi-Jiaodong region it was severely modified, but in the Luzhong and Taihangshan regions the effects were much less marked. The silicic melt may have been the product of partial melting of crustal materials brought into the mantle by the subducted slab during the formation of circum-cratonic orogenic belts. This Mesozoic mantle did not survive for a long time, and was replaced by a Cenozoic mantle with depleted geochemical characteristics. © 2004 Cambridge University Press.
Persistent Identifierhttp://hdl.handle.net/10722/42375
ISSN
2015 Impact Factor: 1.863
2015 SCImago Journal Rankings: 1.119
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhang, HFen_HK
dc.contributor.authorSun, Men_HK
dc.contributor.authorZhou, MFen_HK
dc.contributor.authorFan, WMen_HK
dc.contributor.authorZhou, XHen_HK
dc.contributor.authorZhai, MGen_HK
dc.date.accessioned2007-01-29T08:48:15Z-
dc.date.available2007-01-29T08:48:15Z-
dc.date.issued2004en_HK
dc.identifier.citationGeological Magazine, 2004, v. 141 n. 1, p. 55-62en_HK
dc.identifier.issn0016-7568en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42375-
dc.description.abstractThe lithospheric mantle beneath the North China Craton changed dramatically in its geophysical and geochemical characteristics from Palaeozoic to Cenozoic times. This study uses samples of Mesozoic basalts and mafic intrusions from the North China Craton to investigate the nature of this mantle in Mesozoic times. Sr-Nd-Pb isotopic data demonstrate that the Late Mesozoic lithospheric mantle was extremely heterogeneous. In the central craton or the Luzhong region, it is slightly Sr-Nd isotopically enriched, beneath the Taihangshan region it has an EMI character (87Sr/86Sri = 0.7050-0.7066; εNd = -17--10), and beneath the Luxi-Jiaodong region, it possesses EM2-like characteristics (87Sr/86Sri up to 0.7114). Compositional variation with time is also apparent in the Mesozoic lithospheric mantle. Our data suggest that the old lithospheric mantle was modified during Mesozoic times by a silicic melt, where beneath the Luxi-Jiaodong region it was severely modified, but in the Luzhong and Taihangshan regions the effects were much less marked. The silicic melt may have been the product of partial melting of crustal materials brought into the mantle by the subducted slab during the formation of circum-cratonic orogenic belts. This Mesozoic mantle did not survive for a long time, and was replaced by a Cenozoic mantle with depleted geochemical characteristics. © 2004 Cambridge University Press.en_HK
dc.format.extent273628 bytes-
dc.format.extent25600 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=GEOen_HK
dc.relation.ispartofGeological Magazine-
dc.rightsGeological Magazine. Copyright © Cambridge University Press.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectMesozoicen_HK
dc.subjectSilicate meltsen_HK
dc.subjectHeterogeneityen_HK
dc.subjectIsotopesen_HK
dc.subjectContinental lithosphereen_HK
dc.titleHighly heterogeneous Late Mesozoic lithospheric mantle beneath the North China Craton: evidence from Sr–Nd–Pb isotopic systematics of mafic igneous rocksen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0016-7568&volume=141&issue=1&spage=55&epage=62&date=2004&atitle=Highly+heterogeneous+Late+Mesozoic+lithospheric+mantle+beneath+the+North+China+Craton:+evidence+from+Sr–Nd–Pb+isotopic+systematics+of+mafic+igneous+rocksen_HK
dc.identifier.emailSun, M: minsun@hku.hk-
dc.identifier.emailZhou, MF: mfzhou@hkucc.hku.hk-
dc.identifier.authoritySun, M=rp00780-
dc.identifier.authorityZhou, MF=rp00844-
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1017/S0016756803008331en_HK
dc.identifier.scopuseid_2-s2.0-1842682440-
dc.identifier.hkuros111460-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-1842682440&selection=ref&src=s&origin=recordpage-
dc.identifier.volume141-
dc.identifier.issue1-
dc.identifier.spage55-
dc.identifier.epage62-
dc.identifier.isiWOS:000220629700004-
dc.publisher.placeUnited Kingdom-
dc.identifier.scopusauthoridZhang, HF=7409201720-
dc.identifier.scopusauthoridSun, M=25932315800-
dc.identifier.scopusauthoridZhou, MF=7403506005-
dc.identifier.scopusauthoridFan, WM=7401635313-
dc.identifier.scopusauthoridZhou, XH=7410089813-
dc.identifier.scopusauthoridZhai, MG=7007119530-

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