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Article: Onstraints on timing of the early-Paleoproterozoic magmatism and crustal evolution of the Oulongbuluke microcontinent: U-Pb and Lu-Hf isotope systematics of zircons from Mohe granitic pluton

TitleOnstraints on timing of the early-Paleoproterozoic magmatism and crustal evolution of the Oulongbuluke microcontinent: U-Pb and Lu-Hf isotope systematics of zircons from Mohe granitic pluton
Authors
KeywordsGranite
North Qaidam
Oulongbuluke micro-continent
Precambrian crustal evolution
U-Pb and Hf isotopes
Zircon
Issue Date2007
PublisherChinese Academy of Sciences, Institute of Geology and Geophysics. The Journal's web site is located at http://www.ysxb.ac.cn/ysxb/ch/index.aspx
Citation
Acta Petrologica Sinica, 2007, v. 23 n. 2, p. 513-522 How to Cite?
AbstractThe Olongbuluke micro-continent is composed of a two-fold basement with cover strata. The lower basement is the medium-to high-grade Delingha complex (DC) and the Dakendaban Group, the upper is the low-grade Wandonggou Group. Zircon LA-ICP-MS dating gives U-Pb isotope of 27 zircon grains from the Mohe granite of the DC, of which 26 zircon grains suffered various degree of Pb loss and defined a Concordia with a upper intercept age of 2470 + 19/ - 18Ma. Hf isotope of 25 zircon grains was measured using LA-MC-ICP-MS technique, of which 23 grains crystallized from Mohe granite show Hf i = 0.28129 ∼ 0.28140 (weighted average of 0.28134 ± 0.00003), ε Hf = 2.94 ∼ 6.95 (weighted average of 4.58 + 0.54/ - 0.76), resident time for the felsic crustal reservoir T DM C = 2.54 ∼ 2.75Ga with weighted average of 2.66 ±0.04/-0.02Ga. These data indicate that the Mohe granite pluton was derived from partial melting of the mantle, and the intrusion of the Mohe granite pluton implied a crustal accretion event occurred in Olongbuluke micro-continent at ca. 2.5Ga.
Persistent Identifierhttp://hdl.handle.net/10722/151208
ISSN
2015 Impact Factor: 1.234
2015 SCImago Journal Rankings: 0.892
References

 

DC FieldValueLanguage
dc.contributor.authorLi, XYen_HK
dc.contributor.authorChen, NSen_HK
dc.contributor.authorXia, XPen_HK
dc.contributor.authorSun, Men_HK
dc.contributor.authorXu, Pen_HK
dc.contributor.authorWang, QYen_HK
dc.contributor.authorWang, XYen_HK
dc.date.accessioned2012-06-26T06:18:40Z-
dc.date.available2012-06-26T06:18:40Z-
dc.date.issued2007en_HK
dc.identifier.citationActa Petrologica Sinica, 2007, v. 23 n. 2, p. 513-522en_HK
dc.identifier.issn1000-0569en_HK
dc.identifier.urihttp://hdl.handle.net/10722/151208-
dc.description.abstractThe Olongbuluke micro-continent is composed of a two-fold basement with cover strata. The lower basement is the medium-to high-grade Delingha complex (DC) and the Dakendaban Group, the upper is the low-grade Wandonggou Group. Zircon LA-ICP-MS dating gives U-Pb isotope of 27 zircon grains from the Mohe granite of the DC, of which 26 zircon grains suffered various degree of Pb loss and defined a Concordia with a upper intercept age of 2470 + 19/ - 18Ma. Hf isotope of 25 zircon grains was measured using LA-MC-ICP-MS technique, of which 23 grains crystallized from Mohe granite show Hf i = 0.28129 ∼ 0.28140 (weighted average of 0.28134 ± 0.00003), ε Hf = 2.94 ∼ 6.95 (weighted average of 4.58 + 0.54/ - 0.76), resident time for the felsic crustal reservoir T DM C = 2.54 ∼ 2.75Ga with weighted average of 2.66 ±0.04/-0.02Ga. These data indicate that the Mohe granite pluton was derived from partial melting of the mantle, and the intrusion of the Mohe granite pluton implied a crustal accretion event occurred in Olongbuluke micro-continent at ca. 2.5Ga.en_HK
dc.languageengen_US
dc.publisherChinese Academy of Sciences, Institute of Geology and Geophysics. The Journal's web site is located at http://www.ysxb.ac.cn/ysxb/ch/index.aspxen_HK
dc.relation.ispartofActa Petrologica Sinicaen_HK
dc.subjectGraniteen_HK
dc.subjectNorth Qaidamen_HK
dc.subjectOulongbuluke micro-continenten_HK
dc.subjectPrecambrian crustal evolutionen_HK
dc.subjectU-Pb and Hf isotopesen_HK
dc.subjectZirconen_HK
dc.titleOnstraints on timing of the early-Paleoproterozoic magmatism and crustal evolution of the Oulongbuluke microcontinent: U-Pb and Lu-Hf isotope systematics of zircons from Mohe granitic plutonen_HK
dc.typeArticleen_HK
dc.identifier.emailXia, XP: xpxia@hotmail.comen_HK
dc.identifier.emailSun, M: minsun@hku.hken_HK
dc.identifier.authorityXia, XP=rp00815en_HK
dc.identifier.authoritySun, M=rp00780en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-34250307533en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34250307533&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume23en_HK
dc.identifier.issue2en_HK
dc.identifier.spage513en_HK
dc.identifier.epage522en_HK
dc.publisher.placeChinaen_HK
dc.identifier.scopusauthoridLi, XY=23469678400en_HK
dc.identifier.scopusauthoridChen, NS=12796732200en_HK
dc.identifier.scopusauthoridXia, XP=35241486400en_HK
dc.identifier.scopusauthoridSun, M=25932315800en_HK
dc.identifier.scopusauthoridXu, P=49161291100en_HK
dc.identifier.scopusauthoridWang, QY=14046248000en_HK
dc.identifier.scopusauthoridWang, XY=7501858663en_HK

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