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Article: EMP chemical ages of monazites from Central Zone of the eastern Kunlun Orogen: Records of multi-tectonometamorphic events

TitleEMP chemical ages of monazites from Central Zone of the eastern Kunlun Orogen: Records of multi-tectonometamorphic events
Authors
KeywordsConverge of the Gondwanaland
Eastern Kunlun Orogen
Electron microprobe Th-U-Pbtotal age
Monazite
Northern Qinghai-Tibet Plateau
Tethys evolution
Zoned garnet
Issue Date2007
PublisherScience China Press. The Journal's web site is located at http://www.springerlink.com/content/1001-6538/
Citation
Chinese Science Bulletin, 2007, v. 52 n. 16, p. 2252-2263 How to Cite?
AbstractTwo generations of monazite were identified in one mica schist sample from the central zone of the eastern Kunlun Orogen at the northern margin of the Qinghai-Tibet Plateau. The first generation was found in the cores of garnet porphyroblasts with relatively high Y2O3 contents (averaging 1.012±0.088 wt%). The second generation occurs either as inclusions in the rims of garnet porphyroblasts, matrix kyanite, plagioclase and quartz, or as separate crystals associated with matrix biotite and muscovite mostly having a relatively low Y2O3 content (averaging 0.479±0.100 wt%). Electron microprobe (EMP) Th-U-Pbtotal chemical dating for two grains of the first generation monazite yields average ages of 455 ± 18 Ma and 420 ± 20 Ma, respectively; six grains of the second generation gave an average age of 246.1 ± 3.8 Ma. These ages suggest that the core and rim of the garnet porphyroblasts and their associated assemblages record two events of significant tectonometamorphism. The formation of the Ordovician monazite is related to the tectonometamorphic event responsible for continuous amalgamation of the Gondwanaland in the Late Pan-African period or for consumption of the Proto-Tethys, whereas the development of the Triassic monazite is related to the tectonometamorphic event for consumption of the Paleo-Tethys. © 2007 Science in China Press.
Persistent Identifierhttp://hdl.handle.net/10722/72973
ISSN
2015 Impact Factor: 1.789
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChen, Nen_HK
dc.contributor.authorSun, Men_HK
dc.contributor.authorWang, Qen_HK
dc.contributor.authorZhao, Gen_HK
dc.contributor.authorChen, Qen_HK
dc.contributor.authorShu, Gen_HK
dc.date.accessioned2010-09-06T06:46:51Z-
dc.date.available2010-09-06T06:46:51Z-
dc.date.issued2007en_HK
dc.identifier.citationChinese Science Bulletin, 2007, v. 52 n. 16, p. 2252-2263en_HK
dc.identifier.issn1001-6538en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72973-
dc.description.abstractTwo generations of monazite were identified in one mica schist sample from the central zone of the eastern Kunlun Orogen at the northern margin of the Qinghai-Tibet Plateau. The first generation was found in the cores of garnet porphyroblasts with relatively high Y2O3 contents (averaging 1.012±0.088 wt%). The second generation occurs either as inclusions in the rims of garnet porphyroblasts, matrix kyanite, plagioclase and quartz, or as separate crystals associated with matrix biotite and muscovite mostly having a relatively low Y2O3 content (averaging 0.479±0.100 wt%). Electron microprobe (EMP) Th-U-Pbtotal chemical dating for two grains of the first generation monazite yields average ages of 455 ± 18 Ma and 420 ± 20 Ma, respectively; six grains of the second generation gave an average age of 246.1 ± 3.8 Ma. These ages suggest that the core and rim of the garnet porphyroblasts and their associated assemblages record two events of significant tectonometamorphism. The formation of the Ordovician monazite is related to the tectonometamorphic event responsible for continuous amalgamation of the Gondwanaland in the Late Pan-African period or for consumption of the Proto-Tethys, whereas the development of the Triassic monazite is related to the tectonometamorphic event for consumption of the Paleo-Tethys. © 2007 Science in China Press.en_HK
dc.languageengen_HK
dc.publisherScience China Press. The Journal's web site is located at http://www.springerlink.com/content/1001-6538/en_HK
dc.relation.ispartofChinese Science Bulletinen_HK
dc.subjectConverge of the Gondwanalanden_HK
dc.subjectEastern Kunlun Orogenen_HK
dc.subjectElectron microprobe Th-U-Pbtotal ageen_HK
dc.subjectMonaziteen_HK
dc.subjectNorthern Qinghai-Tibet Plateauen_HK
dc.subjectTethys evolutionen_HK
dc.subjectZoned garneten_HK
dc.titleEMP chemical ages of monazites from Central Zone of the eastern Kunlun Orogen: Records of multi-tectonometamorphic eventsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1001-6538&volume=52&spage=2252&epage=2263&date=2007&atitle=EMP+chemical+ages+of+monazites+from+Central+Zone+of+the+eastern+Kunlun+Orogen:+Records+of+multi-tectonometamorphic+events.+en_HK
dc.identifier.emailSun, M:minsun@hku.hken_HK
dc.identifier.emailZhao, G:gzhao@hkucc.hku.hken_HK
dc.identifier.authoritySun, M=rp00780en_HK
dc.identifier.authorityZhao, G=rp00842en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s11434-007-0299-5en_HK
dc.identifier.scopuseid_2-s2.0-34548063702en_HK
dc.identifier.hkuros144187en_HK
dc.identifier.hkuros153387-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34548063702&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume52en_HK
dc.identifier.issue16en_HK
dc.identifier.spage2252en_HK
dc.identifier.epage2263en_HK
dc.identifier.isiWOS:000249381500014-
dc.publisher.placeChinaen_HK
dc.identifier.scopusauthoridChen, N=12796732200en_HK
dc.identifier.scopusauthoridSun, M=25932315800en_HK
dc.identifier.scopusauthoridWang, Q=15752208800en_HK
dc.identifier.scopusauthoridZhao, G=7403296321en_HK
dc.identifier.scopusauthoridChen, Q=35478183900en_HK
dc.identifier.scopusauthoridShu, G=14046160500en_HK

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