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Article: Single zircon grains record two Paleoproterozoic collisional events in the North China Craton

TitleSingle zircon grains record two Paleoproterozoic collisional events in the North China Craton
Authors
KeywordsCollision
Metamorphism
North China Craton
Paleoproterozoic
U-Pb
Zircon
Issue Date2010
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/precamres
Citation
Precambrian Research, 2010, v. 177 n. 3-4, p. 266-276 How to Cite?
AbstractThe Western Block of the North China Craton consists of the Yinshan Block in the north and the Ordos Block in the south which were amalgamated along the east-west trending Khondalite Belt at ∼1.95 Ga. The Western Block then collided with the Eastern Block to form the coherent basement of the North China Craton along the north-south trending Trans-North China Orogen at ∼1.85 Ga. The Huaian Complex, a high-grade terrrane located at the conjunction of the Khondalite Belt and Trans-North China Orogen, records metamorphic events associated with both collisions. The complex consists of lithologies from both the Khondalite Belt and Trans-North China Orogen, of which the former consist of graphite-garnet-sillimanite gneiss, garnet quartzite, felsic paragneiss, calc-silicate rock and marble, together called the Khondalite series. Zircons in the graphite-garnet-sillimanite gneiss can be divided into three types: (1) spherical grains without internal structures, (2) grains with a core-and-rim structure; and (3) grains with a dark core surrounded by double rims. Except for the dark core in type 3, all other types of zircon domains are structureless and highly luminescent, with very low Th/U ratios, typical of a metamorphic origin. Analyses on the cores of type 2 and the inner rims of type 3 from two samples yield upper intercept ages of 1946 ± 26 and 1947 ± 22 Ma, similar to previously determined metamorphic ages from the Khondalite Belt and thus interpreted as the time of collision between the Yinshan and Ordos Blocks. Analyses on type 1 zircons, rims of type 2 and the outer rims of type 3 from the same two samples give ages of 1850 ± 15 and 1857 ± 16 Ma, interpreted as the time of collision between the Eastern and Western Blocks. Thus, zircons in the graphite-garnet-sillimanite gneiss of the Huaian Complex record both of the Paleoproterozoic collisional events in the North China Craton. © 2010 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/151300
ISSN
2015 Impact Factor: 4.037
2015 SCImago Journal Rankings: 3.214
ISI Accession Number ID
Funding AgencyGrant Number
Chinese National 973 Program2007CB411307
Chinese NSFC40730315
40872122
Hong Kong RGC7066/07P
7063/06P
7053/08P
Funding Information:

This research was funded by the Chinese National 973 Program (2007CB411307), Chinese NSFC Grants (40730315 and 40872122) and Hong Kong RGC grants (7066/07P, 7063/06P and 7053/08P). The final version of the paper has benefited from the perceptive and critical comments of journal reviewers F. Corfu and Shuwen Liu and journal editor Wulf Mueller. This is The Institute for Geoscience Research (TIGeR) Publication No. 210.

References

 

DC FieldValueLanguage
dc.contributor.authorZhao, Gen_US
dc.contributor.authorWilde, SAen_US
dc.contributor.authorGuo, Jen_US
dc.contributor.authorCawood, PAen_US
dc.contributor.authorSun, Men_US
dc.contributor.authorLi, Xen_US
dc.date.accessioned2012-06-26T06:20:16Z-
dc.date.available2012-06-26T06:20:16Z-
dc.date.issued2010en_US
dc.identifier.citationPrecambrian Research, 2010, v. 177 n. 3-4, p. 266-276en_US
dc.identifier.issn0301-9268en_US
dc.identifier.urihttp://hdl.handle.net/10722/151300-
dc.description.abstractThe Western Block of the North China Craton consists of the Yinshan Block in the north and the Ordos Block in the south which were amalgamated along the east-west trending Khondalite Belt at ∼1.95 Ga. The Western Block then collided with the Eastern Block to form the coherent basement of the North China Craton along the north-south trending Trans-North China Orogen at ∼1.85 Ga. The Huaian Complex, a high-grade terrrane located at the conjunction of the Khondalite Belt and Trans-North China Orogen, records metamorphic events associated with both collisions. The complex consists of lithologies from both the Khondalite Belt and Trans-North China Orogen, of which the former consist of graphite-garnet-sillimanite gneiss, garnet quartzite, felsic paragneiss, calc-silicate rock and marble, together called the Khondalite series. Zircons in the graphite-garnet-sillimanite gneiss can be divided into three types: (1) spherical grains without internal structures, (2) grains with a core-and-rim structure; and (3) grains with a dark core surrounded by double rims. Except for the dark core in type 3, all other types of zircon domains are structureless and highly luminescent, with very low Th/U ratios, typical of a metamorphic origin. Analyses on the cores of type 2 and the inner rims of type 3 from two samples yield upper intercept ages of 1946 ± 26 and 1947 ± 22 Ma, similar to previously determined metamorphic ages from the Khondalite Belt and thus interpreted as the time of collision between the Yinshan and Ordos Blocks. Analyses on type 1 zircons, rims of type 2 and the outer rims of type 3 from the same two samples give ages of 1850 ± 15 and 1857 ± 16 Ma, interpreted as the time of collision between the Eastern and Western Blocks. Thus, zircons in the graphite-garnet-sillimanite gneiss of the Huaian Complex record both of the Paleoproterozoic collisional events in the North China Craton. © 2010 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.subjectCollisionen_US
dc.subjectMetamorphismen_US
dc.subjectNorth China Cratonen_US
dc.subjectPaleoproterozoicen_US
dc.subjectU-Pben_US
dc.subjectZirconen_US
dc.titleSingle zircon grains record two Paleoproterozoic collisional events in the North China Cratonen_US
dc.typeArticleen_US
dc.identifier.emailZhao, G: gzhao@hkucc.hku.hken_US
dc.identifier.emailSun, M: minsun@hku.hken_US
dc.identifier.emailLi, X: lixuping@cugb.edu.cn-
dc.identifier.authorityZhao, G=rp00842en_US
dc.identifier.authoritySun, M=rp00780en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.precamres.2009.12.007en_US
dc.identifier.scopuseid_2-s2.0-76049123155en_US
dc.identifier.hkuros175402-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-76049123155&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume177en_US
dc.identifier.issue3-4en_US
dc.identifier.spage266en_US
dc.identifier.epage276en_US
dc.identifier.isiWOS:000275618100004-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridZhao, G=7403296321en_US
dc.identifier.scopusauthoridWilde, SA=35254758600en_US
dc.identifier.scopusauthoridGuo, J=35368525900en_US
dc.identifier.scopusauthoridCawood, PA=7004146041en_US
dc.identifier.scopusauthoridSun, M=25932315800en_US
dc.identifier.scopusauthoridLi, X=35254067700en_US
dc.identifier.citeulike6519468-

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