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Article: Composite nature of the North China granulite-facies Belt: Tectonothermal and geochronological constraints

TitleComposite nature of the North China granulite-facies Belt: Tectonothermal and geochronological constraints
Authors
KeywordsAccretion
Archean
Collision
Granulite-facies metamorphism
North China Craton
Paleoproterozoic
Issue Date2006
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jcr
Citation
Gondwana Research, 2006, v. 9 n. 3, p. 337-348 How to Cite?
AbstractGranulite-facies rocks are intermittently exposed in a roughly E-W trending belt that extends for approximately 2000 km across the North China Craton, from the Helanshan, Qianlishan, Wulashan-Daqingshan, Guyang and Jining Complexes in the Western Block, through the Huai'an, Hengshan, Xuanhua and Chengde Complexes in the Trans-North China Orogen, to the Jianping (Western Liaoning), Eastern Hebei, Northern Liaoning and Southern Jilin Complexes in the Eastern Block. The belt is generally referred to as the North China Granulite-Facies Belt, previously interpreted as the lowest part of an obliquely exposed crust of the North China Craton. Recent data indicate that the North China Granulite-Facies Belt is not a single terrane. Instead, it represents components of three separate terranes: The Eastern and Western Blocks and Trans-North China Orogen. Each of these units records different metamorphic histories and reflect the complex tectonic evolution of the NCC during the late Archean and Paleoproterozoic. Mafic granulites in the Eastern Block and the Yinshan Terrane (Western Block) underwent medium-pressure granulite-facies metamorphism at about ∼2.5 Ga, with anticlockwise P-T paths involving near isobaric cooling following peak metamorphism, reflecting an origin related to intrusion and underplating of mantle-derived magmas. Pelitic granulites in the Khondalite Belt (Western Block) underwent medium-pressure granulite-facies metamorphism at about 2.0-1.9 Ga, with clockwise P-T paths, which record the Paleoproterozoic amalgamation of the Yinshan and Ordos Terranes to form the Western Block. Mafic and pelitic granulites in the Trans-North China Orogen experienced high- to medium-pressure granulite-facies metamorphism at ∼1.85 Ga, with clockwise P-T paths involving nearly isothermal decompression following peak metamorphism, which are in accord with the final collision between the Eastern and Western Blocks to form the North China Craton at ∼1.8 Ga. The NCGB cannot therefore represent a separate unique terrane; instead it reflects the amalgamation of three separate granulite terranes that evolved independently and at different times. © 2005 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/72983
ISSN
2015 Impact Factor: 8.743
2015 SCImago Journal Rankings: 4.949
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhao, Gen_HK
dc.contributor.authorSun, Men_HK
dc.contributor.authorWilde, SAen_HK
dc.contributor.authorSanzhong, Len_HK
dc.contributor.authorLiu, Sen_HK
dc.contributor.authorZhang, Jen_HK
dc.date.accessioned2010-09-06T06:46:57Z-
dc.date.available2010-09-06T06:46:57Z-
dc.date.issued2006en_HK
dc.identifier.citationGondwana Research, 2006, v. 9 n. 3, p. 337-348en_HK
dc.identifier.issn1342-937Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/72983-
dc.description.abstractGranulite-facies rocks are intermittently exposed in a roughly E-W trending belt that extends for approximately 2000 km across the North China Craton, from the Helanshan, Qianlishan, Wulashan-Daqingshan, Guyang and Jining Complexes in the Western Block, through the Huai'an, Hengshan, Xuanhua and Chengde Complexes in the Trans-North China Orogen, to the Jianping (Western Liaoning), Eastern Hebei, Northern Liaoning and Southern Jilin Complexes in the Eastern Block. The belt is generally referred to as the North China Granulite-Facies Belt, previously interpreted as the lowest part of an obliquely exposed crust of the North China Craton. Recent data indicate that the North China Granulite-Facies Belt is not a single terrane. Instead, it represents components of three separate terranes: The Eastern and Western Blocks and Trans-North China Orogen. Each of these units records different metamorphic histories and reflect the complex tectonic evolution of the NCC during the late Archean and Paleoproterozoic. Mafic granulites in the Eastern Block and the Yinshan Terrane (Western Block) underwent medium-pressure granulite-facies metamorphism at about ∼2.5 Ga, with anticlockwise P-T paths involving near isobaric cooling following peak metamorphism, reflecting an origin related to intrusion and underplating of mantle-derived magmas. Pelitic granulites in the Khondalite Belt (Western Block) underwent medium-pressure granulite-facies metamorphism at about 2.0-1.9 Ga, with clockwise P-T paths, which record the Paleoproterozoic amalgamation of the Yinshan and Ordos Terranes to form the Western Block. Mafic and pelitic granulites in the Trans-North China Orogen experienced high- to medium-pressure granulite-facies metamorphism at ∼1.85 Ga, with clockwise P-T paths involving nearly isothermal decompression following peak metamorphism, which are in accord with the final collision between the Eastern and Western Blocks to form the North China Craton at ∼1.8 Ga. The NCGB cannot therefore represent a separate unique terrane; instead it reflects the amalgamation of three separate granulite terranes that evolved independently and at different times. © 2005 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jcren_HK
dc.relation.ispartofGondwana Researchen_HK
dc.subjectAccretionen_HK
dc.subjectArcheanen_HK
dc.subjectCollisionen_HK
dc.subjectGranulite-facies metamorphismen_HK
dc.subjectNorth China Cratonen_HK
dc.subjectPaleoproterozoicen_HK
dc.titleComposite nature of the North China granulite-facies Belt: Tectonothermal and geochronological constraintsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1342-937X&volume=9&issue=3&spage=337&epage=348&date=APR&atitle=Composite+nature+of+the+North+China+Granulite-Facies+Belt:+Tectonothermal+and+geochronological+constraintsen_HK
dc.identifier.emailZhao, G:gzhao@hkucc.hku.hken_HK
dc.identifier.emailSun, M:minsun@hku.hken_HK
dc.identifier.authorityZhao, G=rp00842en_HK
dc.identifier.authoritySun, M=rp00780en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.gr.2005.10.004en_HK
dc.identifier.scopuseid_2-s2.0-33644790369en_HK
dc.identifier.hkuros122023en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33644790369&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume9en_HK
dc.identifier.issue3en_HK
dc.identifier.spage337en_HK
dc.identifier.epage348en_HK
dc.identifier.isiWOS:000238416600007-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridZhao, G=7403296321en_HK
dc.identifier.scopusauthoridSun, M=25932315800en_HK
dc.identifier.scopusauthoridWilde, SA=35254758600en_HK
dc.identifier.scopusauthoridSanzhong, L=6505901810en_HK
dc.identifier.scopusauthoridLiu, S=35253878000en_HK
dc.identifier.scopusauthoridZhang, J=49061670600en_HK

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