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Article: The Khanka Block, NE China, and its significance for the evolution of the Central Asian Orogenic Belt and continental accretion
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TitleThe Khanka Block, NE China, and its significance for the evolution of the Central Asian Orogenic Belt and continental accretion
 
AuthorsWilde, SA3
Wu, F2
Zhao, G1
 
KeywordsBlueschist facies
Granitoid
Inductively coupled plasma method
Ion microprobe
North china block
 
Issue Date2010
 
PublisherGeological Society Publishing House. The Journal's web site is located at http://www.geolsoc.org.uk/sp
 
CitationGeological Society Special Publication, 2010, v. 338 n. 1, p. 117-137 [How to Cite?]
DOI: http://dx.doi.org/10.1144/SP338.6
 
AbstractSensitive high-resolution ion microprobe and inductively coupled plasma mass spectrometry U-Pb dating of zircons from granitoids and paragneiss in the Chinese segment of the Khanka Block reveals that granite magmatism occurred at 518±7 Ma and was followed shortly after by high-grade metamorphism at c. 500 Ma (timing ranging from 491±4 Ma in medium-grained granitoid, through 499±10 Ma in porphyritic granite, to 501±8 Ma in paragneiss). Such a scenario has previously been established on similar lithologies in the Jiamusi Block to the west, with identical ages. This suggests that the Khanka and Jiamusi blocks form part of a single terrane and that the Dunhua-Mishan Fault, which was previously considered to separate two unique terranes, cannot be a terrane boundary fault. Previous suggestions of a link between the Khanka Block and the Hida Block in Japan are not supported following a comparison of the new zircon data with published ages for the Japanese terranes. A granitoid with an age of 112±1 Ma in the Khanka Block probably records the effect of Pacific plate subduction, as such ages are common further south in the extreme eastern part of the North China Craton, where they have been related to post-collisional extension and lithospheric thinning in the Jiaodong Peninsula. The presence of such young granitoids, and the previous dating of blueschist-facies metamorphism as late Early Jurassic in the Heilongjiang Complex of the Jiamusi Block, supports the view that the current location of the Jiamusi-Khanka terrane is a product of circum-Pacific accretion rather than it being a microcontinental block that was trapped by the northward collision of the North China Craton with Siberia as part of the assembly of the main Central Asian Orogenic Belt. © 2010 The Geological Society of London.
 
ISSN0305-8719
2012 SCImago Journal Rankings: 0.787
 
DOIhttp://dx.doi.org/10.1144/SP338.6
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorWilde, SA
 
dc.contributor.authorWu, F
 
dc.contributor.authorZhao, G
 
dc.date.accessioned2011-09-23T05:46:30Z
 
dc.date.available2011-09-23T05:46:30Z
 
dc.date.issued2010
 
dc.description.abstractSensitive high-resolution ion microprobe and inductively coupled plasma mass spectrometry U-Pb dating of zircons from granitoids and paragneiss in the Chinese segment of the Khanka Block reveals that granite magmatism occurred at 518±7 Ma and was followed shortly after by high-grade metamorphism at c. 500 Ma (timing ranging from 491±4 Ma in medium-grained granitoid, through 499±10 Ma in porphyritic granite, to 501±8 Ma in paragneiss). Such a scenario has previously been established on similar lithologies in the Jiamusi Block to the west, with identical ages. This suggests that the Khanka and Jiamusi blocks form part of a single terrane and that the Dunhua-Mishan Fault, which was previously considered to separate two unique terranes, cannot be a terrane boundary fault. Previous suggestions of a link between the Khanka Block and the Hida Block in Japan are not supported following a comparison of the new zircon data with published ages for the Japanese terranes. A granitoid with an age of 112±1 Ma in the Khanka Block probably records the effect of Pacific plate subduction, as such ages are common further south in the extreme eastern part of the North China Craton, where they have been related to post-collisional extension and lithospheric thinning in the Jiaodong Peninsula. The presence of such young granitoids, and the previous dating of blueschist-facies metamorphism as late Early Jurassic in the Heilongjiang Complex of the Jiamusi Block, supports the view that the current location of the Jiamusi-Khanka terrane is a product of circum-Pacific accretion rather than it being a microcontinental block that was trapped by the northward collision of the North China Craton with Siberia as part of the assembly of the main Central Asian Orogenic Belt. © 2010 The Geological Society of London.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationGeological Society Special Publication, 2010, v. 338 n. 1, p. 117-137 [How to Cite?]
DOI: http://dx.doi.org/10.1144/SP338.6
 
dc.identifier.doihttp://dx.doi.org/10.1144/SP338.6
 
dc.identifier.epage137
 
dc.identifier.hkuros193925
 
dc.identifier.issn0305-8719
2012 SCImago Journal Rankings: 0.787
 
dc.identifier.issue1
 
dc.identifier.openurl
 
dc.identifier.scopuseid_2-s2.0-80053369945
 
dc.identifier.spage117
 
dc.identifier.urihttp://hdl.handle.net/10722/139192
 
dc.identifier.volume338
 
dc.languageeng
 
dc.publisherGeological Society Publishing House. The Journal's web site is located at http://www.geolsoc.org.uk/sp
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofGeological Society Special Publication
 
dc.relation.referencesReferences in Scopus
 
dc.subjectBlueschist facies
 
dc.subjectGranitoid
 
dc.subjectInductively coupled plasma method
 
dc.subjectIon microprobe
 
dc.subjectNorth china block
 
dc.titleThe Khanka Block, NE China, and its significance for the evolution of the Central Asian Orogenic Belt and continental accretion
 
dc.typeArticle
 
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Author Affiliations
  1. The University of Hong Kong
  2. Institute of Geology and Geophysics Chinese Academy of Sciences
  3. Curtin University of Technology, The Institute for Geoscience Research