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
2011 SCImago Journal Rankings: 0.052
DOIhttp://dx.doi.org/10.1144/SP338.6
ReferencesReferences in Scopus
DC Field
Value
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
2011 SCImago Journal Rankings: 0.052
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
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