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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
Title | Petrogenesis and geodynamics of Late Archean magmatism in eastern Hebei, eastern North China Craton: Geochronological, geochemical and Nd-Hf isotopic evidence | ||||||
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Authors | |||||||
Keywords | Magmatism Neoarchean North China Craton Zircon Hf Isotope Zircon U-Pb Age | ||||||
Issue Date | 2008 | ||||||
Publisher | Elsevier 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? | ||||||
Abstract | The 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 Identifier | http://hdl.handle.net/10722/151262 | ||||||
ISSN | 2023 Impact Factor: 3.2 2023 SCImago Journal Rankings: 1.589 | ||||||
ISI Accession Number ID |
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 Field | Value | Language |
---|---|---|
dc.contributor.author | Yang, JH | en_US |
dc.contributor.author | Wu, FY | en_US |
dc.contributor.author | Wilde, SA | en_US |
dc.contributor.author | Zhao, G | en_US |
dc.date.accessioned | 2012-06-26T06:19:32Z | - |
dc.date.available | 2012-06-26T06:19:32Z | - |
dc.date.issued | 2008 | en_US |
dc.identifier.citation | Precambrian Research, 2008, v. 167 n. 1-2, p. 125-149 | en_US |
dc.identifier.issn | 0301-9268 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/151262 | - |
dc.description.abstract | The 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.language | eng | en_US |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/precamres | en_US |
dc.relation.ispartof | Precambrian Research | en_US |
dc.rights | Precambrian Research. Copyright © Elsevier BV. | - |
dc.subject | Magmatism | en_US |
dc.subject | Neoarchean | en_US |
dc.subject | North China Craton | en_US |
dc.subject | Zircon Hf Isotope | en_US |
dc.subject | Zircon U-Pb Age | en_US |
dc.title | Petrogenesis and geodynamics of Late Archean magmatism in eastern Hebei, eastern North China Craton: Geochronological, geochemical and Nd-Hf isotopic evidence | en_US |
dc.type | Article | en_US |
dc.identifier.email | Zhao, G: gzhao@hkucc.hku.hk | en_US |
dc.identifier.authority | Zhao, G=rp00842 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1016/j.precamres.2008.07.004 | en_US |
dc.identifier.scopus | eid_2-s2.0-54249163492 | en_US |
dc.identifier.hkuros | 154944 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-54249163492&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 167 | en_US |
dc.identifier.issue | 1-2 | en_US |
dc.identifier.spage | 125 | en_US |
dc.identifier.epage | 149 | en_US |
dc.identifier.isi | WOS:000261552100007 | - |
dc.publisher.place | Netherlands | en_US |
dc.identifier.scopusauthorid | Yang, JH=35280993000 | en_US |
dc.identifier.scopusauthorid | Wu, FY=40561925600 | en_US |
dc.identifier.scopusauthorid | Wilde, SA=35254758600 | en_US |
dc.identifier.scopusauthorid | Zhao, G=7403296321 | en_US |
dc.identifier.issnl | 0301-9268 | - |