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Lu-Hf systematics of the ultra-high temperature Napier Complex, East Antarctica

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dc.contributor.authorN.M. Kelly-
dc.contributor.authorS.L. Harley-
dc.contributor.authorChoi, Sung Hi-
dc.contributor.authorSamuel B. Mukasa-
dc.contributor.authorY. Osanai-
dc.contributor.authorA.V. Andronikov-
dc.coverage.spatialAntarctica-
dc.date.accessioned2018-04-05T10:42:07Z-
dc.date.available2018-04-05T10:42:07Z-
dc.date.issued2007-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/7739-
dc.description.abstractThe Napier Complex comprises some of the oldest rocks on earth (~3.8 billion years old), overprinted by an ultra-high temperature (UHT) metamorphic event near the Archean&#61485-
dc.description.abstractProterozoic boundary. Garnet, orthopyroxene, sapphirine, osumilite, rutile and a whole rock representing a fully equilibrated assemblage from this UHT granulite belt have yielded a Lu&#61485-
dc.description.abstractHf isochron age of 2,403 +/- 43 Ma. Preservation of the UHT mineral assemblage in the rock analyzed suggests rapid cooling with closure likely to have occurred for the Lu-Hf system at post-peak UHT conditions near a temperature of ~800C. Zircon eHf values we have measured "see through" the UHT metamorphism and show that the source materials for the magmas that formed the Napier Complex were extremely depleted (> +5.6 eHf at 3.85 Ga) relative to the chondritic uniform reservoir (CHUR). These results also suggest significant depletion of the early Archean mantle, in agreement with the early differentiation of the earth that the latest core formation models require.-
dc.languageEnglish-
dc.titleLu-Hf systematics of the ultra-high temperature Napier Complex, East Antarctica-
dc.title.alternative남극 네이피어 복합체의 초고온 변성암의 Lu-Hf 동위원소 연구-
dc.typeProceeding-
dc.identifier.bibliographicCitationN.M. Kelly, et al. 2007. Lu-Hf systematics of the ultra-high temperature Napier Complex, East Antarctica. UC Santa Barbara. UC Santa Barbara. 2007.08.26~.-
dc.citation.volume10-
dc.citation.number1-
dc.citation.conferenceDate2007.08.26~-
dc.citation.conferenceNameUC Santa Barbara-
dc.citation.conferencePlaceUC Santa Barbara-
dc.description.articleClassificationPro(FULL)국제-
dc.subject.keywordAntarctica-
dc.subject.keywordLu-Hf isotope-
dc.subject.keywordNapier Complex-
dc.subject.keywordUHT-
dc.identifier.localId2007-0133-
Appears in Collections  
2007-2007, Radiogenic Isotopic Systematics on the Rock Samples from Polar Region(07-07) / Choi, Sung Hi (PE07140)
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