14C ages of 10 Yamato and Allan Hills meteorites

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概要

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• Carbon was extracted from 1g samples of ten Antarctic chondrites, using stepwise heating. The evolved CO_2 was collected at 1000℃, melt and remelt. The ^<14>C concentrations were measured at the Isotrace AMS facility and were compared with the zero-age ^<14>C concentration of the Bruderheim (L6) chondrite. The Allan Hills meteorite ALH-77231 (L6) yielded a terrestrial age, not corrected for in situ production, of 30ka. The uncorrected terrestrial ages of the 9 Yamato meteorites Y-74014 (H6), Y-74097 (Dio), Y-74191 (L3), Y-75271 (L5), Y-790448 (LL3), Y-791500 (H3), Y-791630 (L4), Y-791717 (C3) and Y-74647 (H5) showed a wide range from 500a to 30ka.

• 国立極地研究所の論文

著者

• Beukens R.p.

  Isotrace Laboratory University Of Toronto

• Rucklidge J.C.

  Isotrace Laboratory, University of Toronto

• Miura Yasunori

  Department of Mineralogical Sciences and Geology, Yamaguchi University

• Miura Yasunori

  Department Of Mineralogical Sciences And Geology Yamaguchi University

• Miura Yasunori

  Department Of Mineralogical Science And Geology Faculty Of Science Yamaguchi University

• Rucklidge J.c.

  Isotrace Laboratory University Of Toronto

関連論文

• 14C ages of 10 Yamato and Allan Hills meteorites
• 14C terrestrial ages of nine Antarctic meteorites using CO and CO2 temperature extractions
• On homogeneity of the Yamato-75110 chondrite
• Classification of several Yamato-75 chondrites (IV)
• Classification of several Yamato-75 chondrites (III)
• Composition and structural substitution of meteoritic plagioclases (I)
• Noble gases in the K-T boundary clay from Stevns Klint, Denmark
• Merrillite, a whitlockite-group mineral in Yamato-75 chondrites
• The Ni, Fe and Co contents of metal phases in the Allende, Holbrook and Nuevo Mercurio chondrites

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