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Article: Nature, composition, enrichment processes and its mechanism of the Mesozoic lithospheric mantle beneath the southeastern North China Craton

TitleNature, composition, enrichment processes and its mechanism of the Mesozoic lithospheric mantle beneath the southeastern North China Craton
Authors
KeywordsLithospheric mantle
Mantle-derived rocks
Mesozoic
North China Craton
Issue Date2005
PublisherChinese Academy of Sciences, Institute of Geology and Geophysics. The Journal's web site is located at http://www.ysxb.ac.cn/ysxb/ch/index.aspx
Citation
Acta Petrologica Sinica, 2005, v. 21 n. 4, p. 1271-1280 How to Cite?
AbstractThis paper aims to constrain the nature and composition of the Mesozoic lithospheric mantle beneath the southeastern North China Craton on the basis of a systematic review on the temporal and spatial distribution and geochemical features of Mesozoic mantle-derived magmatism in the region, and to further understand the temporal and spatial evolution, enrichment processes and its mechanism of the lithosphere through the comparison with the Mesozoic lithospheric mantle beneath the central, i. e. Luzhong region. Sr-Nd-Pb isotopic features of mantle-derived rocks imply that apparently temporal and spatial heterogeneity of the Mesozoic lithospheric mantle existed beneath the eastern North China Craton, the mantle under the central North China Craton, i. e the Luzhong region was dominantly slightly enriched and that under the southeastern North China Craton such as Luxi and Jiaodong region was EM2-like ( 87Sr/ 86Sr i up to 0. 7114). It is also apparent that the Mesozoic lithospheric mantle beneath the southeastern North China Craton evolved with time. These geochemical features of mantle-derived rocks and compositional and textural characteristics of the basalt-borne mantle xenoliths (peridotites and pyroxenites) and xenocrysts (olivine and pyroxene) demonstrate that the Mesozoic lithospheric mantle beneath the southeastern North China Craton was severely affected by the silica-rich melts. Reaction between lithospheric peridotite and infiltrated melt was considered to be an important type of lithospheric reconstruction and transformation, which led to the transformation of the Paleozoic high-Mg # peridotite to late Mesozoic low-Mg # peridotite and pyroxenite. Influx of melts into the lithospheric mantle, which had the geochemical characteristics of partial melting of the lower/middle crust, resulted in rapid enrichment of the late Mesozoic lithospheric mantle beneath the southeastern North China Craton. Relevant scientific issues such as the timing, processes and its mechanism of Mesozoic lithospheric thinning and reconstruction of the eastern North China Craton have also been discussed.
Persistent Identifierhttp://hdl.handle.net/10722/72460
ISSN
2015 Impact Factor: 1.234
2015 SCImago Journal Rankings: 0.892
References

 

DC FieldValueLanguage
dc.contributor.authorZhang, HFen_HK
dc.contributor.authorZhou, XHen_HK
dc.contributor.authorFan, WMen_HK
dc.contributor.authorSun, Men_HK
dc.contributor.authorGuo, Fen_HK
dc.contributor.authorYing, JFen_HK
dc.contributor.authorTang, YJen_HK
dc.contributor.authorZhang, Jen_HK
dc.contributor.authorNiu, LFen_HK
dc.date.accessioned2010-09-06T06:42:02Z-
dc.date.available2010-09-06T06:42:02Z-
dc.date.issued2005en_HK
dc.identifier.citationActa Petrologica Sinica, 2005, v. 21 n. 4, p. 1271-1280en_HK
dc.identifier.issn1000-0569en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72460-
dc.description.abstractThis paper aims to constrain the nature and composition of the Mesozoic lithospheric mantle beneath the southeastern North China Craton on the basis of a systematic review on the temporal and spatial distribution and geochemical features of Mesozoic mantle-derived magmatism in the region, and to further understand the temporal and spatial evolution, enrichment processes and its mechanism of the lithosphere through the comparison with the Mesozoic lithospheric mantle beneath the central, i. e. Luzhong region. Sr-Nd-Pb isotopic features of mantle-derived rocks imply that apparently temporal and spatial heterogeneity of the Mesozoic lithospheric mantle existed beneath the eastern North China Craton, the mantle under the central North China Craton, i. e the Luzhong region was dominantly slightly enriched and that under the southeastern North China Craton such as Luxi and Jiaodong region was EM2-like ( 87Sr/ 86Sr i up to 0. 7114). It is also apparent that the Mesozoic lithospheric mantle beneath the southeastern North China Craton evolved with time. These geochemical features of mantle-derived rocks and compositional and textural characteristics of the basalt-borne mantle xenoliths (peridotites and pyroxenites) and xenocrysts (olivine and pyroxene) demonstrate that the Mesozoic lithospheric mantle beneath the southeastern North China Craton was severely affected by the silica-rich melts. Reaction between lithospheric peridotite and infiltrated melt was considered to be an important type of lithospheric reconstruction and transformation, which led to the transformation of the Paleozoic high-Mg # peridotite to late Mesozoic low-Mg # peridotite and pyroxenite. Influx of melts into the lithospheric mantle, which had the geochemical characteristics of partial melting of the lower/middle crust, resulted in rapid enrichment of the late Mesozoic lithospheric mantle beneath the southeastern North China Craton. Relevant scientific issues such as the timing, processes and its mechanism of Mesozoic lithospheric thinning and reconstruction of the eastern North China Craton have also been discussed.en_HK
dc.languageengen_HK
dc.publisherChinese Academy of Sciences, Institute of Geology and Geophysics. The Journal's web site is located at http://www.ysxb.ac.cn/ysxb/ch/index.aspxen_HK
dc.relation.ispartofActa Petrologica Sinicaen_HK
dc.subjectLithospheric mantleen_HK
dc.subjectMantle-derived rocksen_HK
dc.subjectMesozoicen_HK
dc.subjectNorth China Cratonen_HK
dc.titleNature, composition, enrichment processes and its mechanism of the Mesozoic lithospheric mantle beneath the southeastern North China Cratonen_HK
dc.typeArticleen_HK
dc.identifier.emailSun, M:minsun@hku.hken_HK
dc.identifier.authoritySun, M=rp00780en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-31544436579en_HK
dc.identifier.hkuros120058en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-31544436579&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume21en_HK
dc.identifier.issue4en_HK
dc.identifier.spage1271en_HK
dc.identifier.epage1280en_HK
dc.publisher.placeChinaen_HK
dc.identifier.scopusauthoridZhang, HF=7409201720en_HK
dc.identifier.scopusauthoridZhou, XH=7410089813en_HK
dc.identifier.scopusauthoridFan, WM=7401635313en_HK
dc.identifier.scopusauthoridSun, M=25932315800en_HK
dc.identifier.scopusauthoridGuo, F=35227305400en_HK
dc.identifier.scopusauthoridYing, JF=7102534977en_HK
dc.identifier.scopusauthoridTang, YJ=14424481100en_HK
dc.identifier.scopusauthoridZhang, J=7601344415en_HK
dc.identifier.scopusauthoridNiu, LF=12041428000en_HK

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