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Article: Zircon U-Pb geochronological and geochemical constraints on the petrogenesis of the Taishan sanukitoids (Shandong): Implications for Neoarchean subduction in the Eastern Block, North China Craton

TitleZircon U-Pb geochronological and geochemical constraints on the petrogenesis of the Taishan sanukitoids (Shandong): Implications for Neoarchean subduction in the Eastern Block, North China Craton
Authors
KeywordsMantle- and crust-like geochemical signatures
Neoarchean sanukitoids
North China Craton
Subduction
Taishan
Zircon U-Pb geochronology
Issue Date2009
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/precamres
Citation
Precambrian Research, 2009, v. 174 n. 3-4, p. 273-286 How to Cite?
AbstractElemental, Sr-Nd-Pb isotopic and geochronological data are presented for the Taishan high-mg dioritic rocks (western Shandong) from the Eastern Block of the North China Craton in order to better understand the Archean tectonic evolution and crustal growth of the Craton. The rocks gave the zircon U-Pb age of 2536-2540 Ma. They show low SiO 2 and Al 2O 3 contents, high MgO, mg-number, Cr, Ni, Y, Yb, Sr and Ba, enriched LILEs and LREEs, depleted HFSEs and HREEs with (Nb/La) N of 0.07-0.12. They exhibit ε Nd(t) values of 1.53-3.30, ( 206Pb/ 204Pb) i of 11.20-15.30, ( 207Pb/ 204Pb) i of 14.14-14.83 and ( 208Pb/ 204Pb) I of 31.10-33.93. Such geochemical features with an affinity to both a mantle- and crust-like source for the Taishan dioritic rocks are similar to those of the typical Archean sanukitoids, suggesting an origination from a sub-arc mantle wedge variably metasomatized by the slab-derived dehydration fluids and melts before ∼50-100 Ma of the emplacement of the Taishan sanukitoid plutons. It is proposed that the Taishan sanukitoids resulted from the sudden change of the downgoing slab from a flat subduction to subsequently steeper subduction in an active continental margin regime during Neoarchean time. © 2009 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/123919
ISSN
2015 Impact Factor: 4.037
2015 SCImago Journal Rankings: 3.214
ISI Accession Number ID
Funding AgencyGrant Number
Chinese Academy of ScienceKZCX2-YW-128
KZCX1-YW-15-1
-5
National Nature Sciences Foundation of China40721063
40825009
40830319
Ministry of Science and Technology of China2007CB411403
Hong Kong RGC GRFHKU7057/08P
7066/07P
7063/06P
Funding Information:

We would like to thank T.-P. Peng and L.-H. Sun for their help during fieldwork and data analyses. This study was jointly provided by the Chinese Academy of Science (KZCX2-YW-128, KZCX1-YW-15-1, -5), the National Nature Sciences Foundation of China (40721063, 40825009, 40830319), the Ministry of Science and Technology of China (2007CB411403), and Hong Kong RGC GRF (HKU7057/08P. 7066/07P and 7063/06P). This is a contribution to Guangzhou Institute of Geochemistry.The final version of the paper benefited from critical and constructive comments of Profs. M. Santosh, S.W. Liu and P.A. Cawood.

References

 

DC FieldValueLanguage
dc.contributor.authorWang, Yen_HK
dc.contributor.authorZhang, Yen_HK
dc.contributor.authorZhao, Gen_HK
dc.contributor.authorFan, Wen_HK
dc.contributor.authorXia, Xen_HK
dc.contributor.authorZhang, Fen_HK
dc.contributor.authorZhang, Aen_HK
dc.date.accessioned2010-10-07T06:30:55Z-
dc.date.available2010-10-07T06:30:55Z-
dc.date.issued2009en_HK
dc.identifier.citationPrecambrian Research, 2009, v. 174 n. 3-4, p. 273-286en_HK
dc.identifier.issn0301-9268en_HK
dc.identifier.urihttp://hdl.handle.net/10722/123919-
dc.description.abstractElemental, Sr-Nd-Pb isotopic and geochronological data are presented for the Taishan high-mg dioritic rocks (western Shandong) from the Eastern Block of the North China Craton in order to better understand the Archean tectonic evolution and crustal growth of the Craton. The rocks gave the zircon U-Pb age of 2536-2540 Ma. They show low SiO 2 and Al 2O 3 contents, high MgO, mg-number, Cr, Ni, Y, Yb, Sr and Ba, enriched LILEs and LREEs, depleted HFSEs and HREEs with (Nb/La) N of 0.07-0.12. They exhibit ε Nd(t) values of 1.53-3.30, ( 206Pb/ 204Pb) i of 11.20-15.30, ( 207Pb/ 204Pb) i of 14.14-14.83 and ( 208Pb/ 204Pb) I of 31.10-33.93. Such geochemical features with an affinity to both a mantle- and crust-like source for the Taishan dioritic rocks are similar to those of the typical Archean sanukitoids, suggesting an origination from a sub-arc mantle wedge variably metasomatized by the slab-derived dehydration fluids and melts before ∼50-100 Ma of the emplacement of the Taishan sanukitoid plutons. It is proposed that the Taishan sanukitoids resulted from the sudden change of the downgoing slab from a flat subduction to subsequently steeper subduction in an active continental margin regime during Neoarchean time. © 2009 Elsevier B.V. All rights reserved.en_HK
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/precamresen_HK
dc.relation.ispartofPrecambrian Researchen_HK
dc.rightsPrecambrian Research. Copyright © Elsevier BV.-
dc.subjectMantle- and crust-like geochemical signaturesen_HK
dc.subjectNeoarchean sanukitoidsen_HK
dc.subjectNorth China Cratonen_HK
dc.subjectSubductionen_HK
dc.subjectTaishanen_HK
dc.subjectZircon U-Pb geochronologyen_HK
dc.titleZircon U-Pb geochronological and geochemical constraints on the petrogenesis of the Taishan sanukitoids (Shandong): Implications for Neoarchean subduction in the Eastern Block, North China Cratonen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0301-9268&volume=174&issue=3-4&spage=273&epage=286&date=2009&atitle=Zircon+U-Pb+geochronological+and+geochemical+constraints+on+the+petrogenesis+of+the+Taishan+sanukitoids+(Shandong):+implications+for+Neoarchean+subduction+in+the+Eastern+Block,+North+China+Craton-
dc.identifier.emailZhao, G: gzhao@hkucc.hku.hken_HK
dc.identifier.emailXia, X: xpxia@hotmail.comen_HK
dc.identifier.authorityZhao, G=rp00842en_HK
dc.identifier.authorityXia, X=rp00815en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.precamres.2009.08.005en_HK
dc.identifier.scopuseid_2-s2.0-70349850634en_HK
dc.identifier.hkuros175428-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-70349850634&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume174en_HK
dc.identifier.issue3-4en_HK
dc.identifier.spage273en_HK
dc.identifier.epage286en_HK
dc.identifier.isiWOS:000271686800004-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridWang, Y=36496272800en_HK
dc.identifier.scopusauthoridZhang, Y=7601316316en_HK
dc.identifier.scopusauthoridZhao, G=7403296321en_HK
dc.identifier.scopusauthoridFan, W=7401635313en_HK
dc.identifier.scopusauthoridXia, X=35241486400en_HK
dc.identifier.scopusauthoridZhang, F=35306289700en_HK
dc.identifier.scopusauthoridZhang, A=55461719000en_HK
dc.identifier.citeulike5724741-

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