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Article: Secular evolution of the lithosphere beneath the eastern North China Craton: Evidence from Mesozoic basalts and high-Mg andesites

TitleSecular evolution of the lithosphere beneath the eastern North China Craton: Evidence from Mesozoic basalts and high-Mg andesites
Authors
Issue Date2003
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/gca
Citation
Geochimica Et Cosmochimica Acta, 2003, v. 67 n. 22, p. 4373-4387 How to Cite?
AbstractGeochemical and isotopic data from Mesozoic lavas from the Jianguo, Niutoushan, Wulahada, and Guancaishan volcanic fields on the northern margin of the North China Craton provide evidence for secular lithospheric evolution of the region. Jianguo lavas are alkaline basalts with LILE- and LREE-enrichment ((La/Yb) N=12.2-13.2) and MORB-like Sr-Nd-Pb isotopic ratios (( 87Sr/ 86Sr) i<0.704; ε Nd=3.9-4.8; ( 206Pb/ 204Pb) i≈18). Niutoushan basalts are similar but show evidence of olivine fractionation. Wulahada lavas are high-Mg andesites (Mg#∼67) with EM1 Sr-Nd-Pb isotopic signatures. Geochemical data suggest that the basalts originated from MORB-type asthenosphere whereas the high-Mg andesites were derived an EM1 mantle source, i.e., a refractory lithospheric mantle modified by a previously subducted slab. The result, combined with the available data of the Mesozoic basalts from the southern portion of the NCC (Zhang et al., 2002), manifests a vast secular evolution of the lithospheric mantle beneath the eastern NCC from the Paleozoic refractory continental lithosphere to this Mesozoic modified lithosphere. Compared with the cratonic margin, the lithospheri c mantle beneath the center of the craton was less extensively modified, implying the secular evolution was related to the subduction processes surrounding the NCC. Therefore, we suggest that the interaction of the slab-derived silicic melt with the old refractory lithospheric mantle converted the Paleozoic cratonic lithospheric mantle into the late Mesozoic fertile mantle, which was also different from the Cenozoic counterpart. A geodynamic model is proposed to illustrate such a secular lithosphere evolution. © 2003 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/72606
ISSN
2015 Impact Factor: 4.315
2015 SCImago Journal Rankings: 3.016
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhang, HFen_HK
dc.contributor.authorSun, Men_HK
dc.contributor.authorZhou, XHen_HK
dc.contributor.authorZhou, MFen_HK
dc.contributor.authorFan, WMen_HK
dc.contributor.authorZheng, JPen_HK
dc.date.accessioned2010-09-06T06:43:24Z-
dc.date.available2010-09-06T06:43:24Z-
dc.date.issued2003en_HK
dc.identifier.citationGeochimica Et Cosmochimica Acta, 2003, v. 67 n. 22, p. 4373-4387en_HK
dc.identifier.issn0016-7037en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72606-
dc.description.abstractGeochemical and isotopic data from Mesozoic lavas from the Jianguo, Niutoushan, Wulahada, and Guancaishan volcanic fields on the northern margin of the North China Craton provide evidence for secular lithospheric evolution of the region. Jianguo lavas are alkaline basalts with LILE- and LREE-enrichment ((La/Yb) N=12.2-13.2) and MORB-like Sr-Nd-Pb isotopic ratios (( 87Sr/ 86Sr) i<0.704; ε Nd=3.9-4.8; ( 206Pb/ 204Pb) i≈18). Niutoushan basalts are similar but show evidence of olivine fractionation. Wulahada lavas are high-Mg andesites (Mg#∼67) with EM1 Sr-Nd-Pb isotopic signatures. Geochemical data suggest that the basalts originated from MORB-type asthenosphere whereas the high-Mg andesites were derived an EM1 mantle source, i.e., a refractory lithospheric mantle modified by a previously subducted slab. The result, combined with the available data of the Mesozoic basalts from the southern portion of the NCC (Zhang et al., 2002), manifests a vast secular evolution of the lithospheric mantle beneath the eastern NCC from the Paleozoic refractory continental lithosphere to this Mesozoic modified lithosphere. Compared with the cratonic margin, the lithospheri c mantle beneath the center of the craton was less extensively modified, implying the secular evolution was related to the subduction processes surrounding the NCC. Therefore, we suggest that the interaction of the slab-derived silicic melt with the old refractory lithospheric mantle converted the Paleozoic cratonic lithospheric mantle into the late Mesozoic fertile mantle, which was also different from the Cenozoic counterpart. A geodynamic model is proposed to illustrate such a secular lithosphere evolution. © 2003 Elsevier Ltd.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/gcaen_HK
dc.relation.ispartofGeochimica et Cosmochimica Actaen_HK
dc.titleSecular evolution of the lithosphere beneath the eastern North China Craton: Evidence from Mesozoic basalts and high-Mg andesitesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0016-7037&volume=67&spage=4373&epage=4387&date=2003&atitle=Secular+evolution+of+the+lithosphere+beneath+the+eastern+North+China+Craton:+evidence+from+Mesozoic+basalts+and+high-Mg+andesitesen_HK
dc.identifier.emailSun, M:minsun@hku.hken_HK
dc.identifier.emailZhou, MF:mfzhou@hkucc.hku.hken_HK
dc.identifier.authoritySun, M=rp00780en_HK
dc.identifier.authorityZhou, MF=rp00844en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0016-7037(03)00377-6en_HK
dc.identifier.scopuseid_2-s2.0-0344099070en_HK
dc.identifier.hkuros92141en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0344099070&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume67en_HK
dc.identifier.issue22en_HK
dc.identifier.spage4373en_HK
dc.identifier.epage4387en_HK
dc.identifier.isiWOS:000186444200010-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridZhang, HF=22137307400en_HK
dc.identifier.scopusauthoridSun, M=25932315800en_HK
dc.identifier.scopusauthoridZhou, XH=24529257100en_HK
dc.identifier.scopusauthoridZhou, MF=7403506005en_HK
dc.identifier.scopusauthoridFan, WM=7401635313en_HK
dc.identifier.scopusauthoridZheng, JP=24342619200en_HK

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