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Article: Petrogenesis and geodynamics of Late Archean magmatism in eastern Hebei, eastern North China Craton: Geochronological, geochemical and Nd-Hf isotopic evidence

TitlePetrogenesis and geodynamics of Late Archean magmatism in eastern Hebei, eastern North China Craton: Geochronological, geochemical and Nd-Hf isotopic evidence
Authors
KeywordsMagmatism
Neoarchean
North China Craton
Zircon Hf Isotope
Zircon U-Pb Age
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/precamres
Citation
Precambrian Research, 2008, v. 167 n. 1-2, p. 125-149 How to Cite?
AbstractThe eastern part of the North China Craton contains large volumes of Late Archean hornblenditic, tonalitic, dioritic, granodioritic and granitic rocks. LA-ICPMS zircon U-Pb dating of three plutons from eastern Hebei, eastern North China Craton, record emplacement ages of 2526-2515 Ma and metamorphic ages of 2500-2490 Ma for the diorite, granodiorite, and monzogranite and 2440 Ma for the K-feldspar granite. Hornblendites have high MgO (8.6-10.6 wt.%), Cr (674-1126 ppm), Ni (125-159 ppm) and V (224-315 ppm) at low (basic) silica contents (SiO2 = 45.7-49.0 wt.%). They are enriched in light rare earth elements (LREEs) and large ion lithophile elements (LILEs) and depleted in high field strength elements (HFSEs), with positive εNd(t) values (+1.2 to +2.0), indicating they were derived from an enriched mantle source. The monzogranites have high Sr and Ba contents and Sr/Y and La/Yb ratios, low Y and HREEs abundances, and positive εNd(t) and zircon εHf(t) values with Nd and Hf model ages less than 3.0 Ga, reflecting that they were derived from partial melting of a juvenile lower crust at high pressure. However, the K-feldspar granites, with low Sr and Ba concentrations and high HREE and Y contents, are considered to have originated from partial melting of juvenile crustal materials at shallow crustal levels. The diorites and granodiorites have variable major and trace element concentrations. Magmatic zircons from these rocks have heterogeneous εHf(t) values but record uniform homogeneous U-Pb ages, indicating they resulted from mixing of mafic and felsic magmas, coupled with fractional crystallization. Because of the widespread distribution of Late Archean magmatism and evidence for magma mixing, possibly related to mafic magma underplating, it appears likely that this event in the eastern North China Craton may relfect mantle plume activity, that resulted in significant growth of continental crust during the Late Archean. © 2008 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/151262
ISSN
2015 Impact Factor: 4.037
2015 SCImago Journal Rankings: 3.214
ISI Accession Number ID
Funding AgencyGrant Number
National Science Foundation of China40672055
40325006
40429001
Hong Kong RGC7058/04P
7055/05P
7063/06P
Funding Information:

We thank Fukun Chen and Chao-Feng Li for help with the Sr and Nd isotope analyses, Qian Mao and Yu-Guang Ma for help with zircon CL imaging, Lie-Wen Xie and Yue-Heng Yang for help with zircon Hf analysis, and Xiao-Ming Liu and Chun-Rong Diwu for help with zircon U-Pb analysis.This study was supported by the National Science Foundation of China (Grant nos. 40672055, 40325006 and 40429001) and Hong Kong RGC grants (7058/04P, 7055/05P and 7063/06P). This is The Institute for Geoscience Research (TIGeR) publication number 110.

References

 

DC FieldValueLanguage
dc.contributor.authorYang, JHen_US
dc.contributor.authorWu, FYen_US
dc.contributor.authorWilde, SAen_US
dc.contributor.authorZhao, Gen_US
dc.date.accessioned2012-06-26T06:19:32Z-
dc.date.available2012-06-26T06:19:32Z-
dc.date.issued2008en_US
dc.identifier.citationPrecambrian Research, 2008, v. 167 n. 1-2, p. 125-149en_US
dc.identifier.issn0301-9268en_US
dc.identifier.urihttp://hdl.handle.net/10722/151262-
dc.description.abstractThe eastern part of the North China Craton contains large volumes of Late Archean hornblenditic, tonalitic, dioritic, granodioritic and granitic rocks. LA-ICPMS zircon U-Pb dating of three plutons from eastern Hebei, eastern North China Craton, record emplacement ages of 2526-2515 Ma and metamorphic ages of 2500-2490 Ma for the diorite, granodiorite, and monzogranite and 2440 Ma for the K-feldspar granite. Hornblendites have high MgO (8.6-10.6 wt.%), Cr (674-1126 ppm), Ni (125-159 ppm) and V (224-315 ppm) at low (basic) silica contents (SiO2 = 45.7-49.0 wt.%). They are enriched in light rare earth elements (LREEs) and large ion lithophile elements (LILEs) and depleted in high field strength elements (HFSEs), with positive εNd(t) values (+1.2 to +2.0), indicating they were derived from an enriched mantle source. The monzogranites have high Sr and Ba contents and Sr/Y and La/Yb ratios, low Y and HREEs abundances, and positive εNd(t) and zircon εHf(t) values with Nd and Hf model ages less than 3.0 Ga, reflecting that they were derived from partial melting of a juvenile lower crust at high pressure. However, the K-feldspar granites, with low Sr and Ba concentrations and high HREE and Y contents, are considered to have originated from partial melting of juvenile crustal materials at shallow crustal levels. The diorites and granodiorites have variable major and trace element concentrations. Magmatic zircons from these rocks have heterogeneous εHf(t) values but record uniform homogeneous U-Pb ages, indicating they resulted from mixing of mafic and felsic magmas, coupled with fractional crystallization. Because of the widespread distribution of Late Archean magmatism and evidence for magma mixing, possibly related to mafic magma underplating, it appears likely that this event in the eastern North China Craton may relfect mantle plume activity, that resulted in significant growth of continental crust during the Late Archean. © 2008 Elsevier B.V. All rights reserved.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.rightsPrecambrian Research. Copyright © Elsevier BV.-
dc.subjectMagmatismen_US
dc.subjectNeoarcheanen_US
dc.subjectNorth China Cratonen_US
dc.subjectZircon Hf Isotopeen_US
dc.subjectZircon U-Pb Ageen_US
dc.titlePetrogenesis and geodynamics of Late Archean magmatism in eastern Hebei, eastern North China Craton: Geochronological, geochemical and Nd-Hf isotopic evidenceen_US
dc.typeArticleen_US
dc.identifier.emailZhao, G: gzhao@hkucc.hku.hken_US
dc.identifier.authorityZhao, G=rp00842en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.precamres.2008.07.004en_US
dc.identifier.scopuseid_2-s2.0-54249163492en_US
dc.identifier.hkuros154944-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-54249163492&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume167en_US
dc.identifier.issue1-2en_US
dc.identifier.spage125en_US
dc.identifier.epage149en_US
dc.identifier.isiWOS:000261552100007-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridYang, JH=35280993000en_US
dc.identifier.scopusauthoridWu, FY=40561925600en_US
dc.identifier.scopusauthoridWilde, SA=35254758600en_US
dc.identifier.scopusauthoridZhao, G=7403296321en_US

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