File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Zircon U-Pb geochronology of gneissic rocks in the Yunkai massif and its implications on the Caledonian event in the South China Block

TitleZircon U-Pb geochronology of gneissic rocks in the Yunkai massif and its implications on the Caledonian event in the South China Block
Authors
KeywordsCaledonian Tectonothermal Event
Gneissic Rocks
Intracontinental Collision
South China
Yunkai Massif
Zircon U-Pb Geochronology
Issue Date2007
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jcr
Citation
Gondwana Research, 2007, v. 12 n. 4, p. 404-416 How to Cite?
AbstractThis paper presents new zircon U-Pb data and interpretations for the gneissic rocks in the Yunkai massif in order to constrain the timing and evolution of the Caledonian tectonothermal event in the South China Block (SCB). Magmatic and inherited zircons from the orthogneiss in the region, previously thought to be of Precambrian origin, yielded 206Pb/ 238U apparent ages of 421-441 Ma and 513-1343 Ma, respectively. Also a weighted mean 206Pb/ 238U age of 236.0 ± 3.1 Ma was obtained, interpreted as the metamorphic resetting age during the Indosinian tectonic event. Our analyses show that the paragneiss in the region, previously regarded as Proterozoic sedimentary rocks, contains detrital zircons of the Archaean to Paleozoic origin, of which the youngest zircons yielded the U-Pb age of ∼ 423 Ma. These data indicate that (1) the Proterozoic and Archaean components may exist beneath the Yunkai massif; (2) most of the metaigneous rocks are actually the Caledonian anatectic granites possibly overprinted by Indosinian (∼ 236 Ma) reactivation; (3) some paragneiss might have originally deposited during the Devonian time; and (4) a subsequently rapid uplifting took place after the emplacement of the Caledonian granites, revealed by the observation that the Devonian clastic strata uncomfortably overlie the Caledonian granites. In combination with other geochronological data and geological observations throughout the SCB, we propose that the Caledonian tectonothermal event around Silurian (∼ 450-400 Ma) might be a result from an intracontinental collision between the Yangtze and Cathaysian blocks in response to the subduction/collision between the North China block and SCB. © 2006 International Association for Gondwana Research.
Persistent Identifierhttp://hdl.handle.net/10722/151225
ISSN
2015 Impact Factor: 8.743
2015 SCImago Journal Rankings: 4.949
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWang, Yen_US
dc.contributor.authorFan, Wen_US
dc.contributor.authorZhao, Gen_US
dc.contributor.authorJi, Sen_US
dc.contributor.authorPeng, Ten_US
dc.date.accessioned2012-06-26T06:18:58Z-
dc.date.available2012-06-26T06:18:58Z-
dc.date.issued2007en_US
dc.identifier.citationGondwana Research, 2007, v. 12 n. 4, p. 404-416en_US
dc.identifier.issn1342-937Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/151225-
dc.description.abstractThis paper presents new zircon U-Pb data and interpretations for the gneissic rocks in the Yunkai massif in order to constrain the timing and evolution of the Caledonian tectonothermal event in the South China Block (SCB). Magmatic and inherited zircons from the orthogneiss in the region, previously thought to be of Precambrian origin, yielded 206Pb/ 238U apparent ages of 421-441 Ma and 513-1343 Ma, respectively. Also a weighted mean 206Pb/ 238U age of 236.0 ± 3.1 Ma was obtained, interpreted as the metamorphic resetting age during the Indosinian tectonic event. Our analyses show that the paragneiss in the region, previously regarded as Proterozoic sedimentary rocks, contains detrital zircons of the Archaean to Paleozoic origin, of which the youngest zircons yielded the U-Pb age of ∼ 423 Ma. These data indicate that (1) the Proterozoic and Archaean components may exist beneath the Yunkai massif; (2) most of the metaigneous rocks are actually the Caledonian anatectic granites possibly overprinted by Indosinian (∼ 236 Ma) reactivation; (3) some paragneiss might have originally deposited during the Devonian time; and (4) a subsequently rapid uplifting took place after the emplacement of the Caledonian granites, revealed by the observation that the Devonian clastic strata uncomfortably overlie the Caledonian granites. In combination with other geochronological data and geological observations throughout the SCB, we propose that the Caledonian tectonothermal event around Silurian (∼ 450-400 Ma) might be a result from an intracontinental collision between the Yangtze and Cathaysian blocks in response to the subduction/collision between the North China block and SCB. © 2006 International Association for Gondwana Research.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jcren_US
dc.relation.ispartofGondwana Researchen_US
dc.subjectCaledonian Tectonothermal Eventen_US
dc.subjectGneissic Rocksen_US
dc.subjectIntracontinental Collisionen_US
dc.subjectSouth Chinaen_US
dc.subjectYunkai Massifen_US
dc.subjectZircon U-Pb Geochronologyen_US
dc.titleZircon U-Pb geochronology of gneissic rocks in the Yunkai massif and its implications on the Caledonian event in the South China Blocken_US
dc.typeArticleen_US
dc.identifier.emailZhao, G:gzhao@hkucc.hku.hken_US
dc.identifier.authorityZhao, G=rp00842en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.gr.2006.10.003en_US
dc.identifier.scopuseid_2-s2.0-35648946925en_US
dc.identifier.hkuros144321-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-35648946925&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume12en_US
dc.identifier.issue4en_US
dc.identifier.spage404en_US
dc.identifier.epage416en_US
dc.identifier.isiWOS:000251447400005-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridWang, Y=36496272800en_US
dc.identifier.scopusauthoridFan, W=7401635313en_US
dc.identifier.scopusauthoridZhao, G=7403296321en_US
dc.identifier.scopusauthoridJi, S=7409681749en_US
dc.identifier.scopusauthoridPeng, T=7201447871en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats