Lead Isotopic Ages of Chondrules and Calcium-Aluminum-Rich Inclusions

@article{Amelin2002LeadIA,
  title={Lead Isotopic Ages of Chondrules and Calcium-Aluminum-Rich Inclusions},
  author={Y. Amelin and A. Krot and I. Hutcheon and A. Ulyanov},
  journal={Science},
  year={2002},
  volume={297},
  pages={1678 - 1683}
}
The lead-lead isochron age of chondrules in the CR chondrite Acfer 059 is 4564.7 ± 0.6 million years ago (Ma), whereas the lead isotopic age of calcium-aluminum–rich inclusions (CAIs) in the CV chondrite Efremovka is 4567.2 ± 0.6 Ma. This gives an interval of 2.5 ± 1.2 million years (My) between formation of the CV CAIs and the CR chondrules and indicates that CAI- and chondrule-forming events lasted for at least 1.3 My. This time interval is consistent with a 2- to 3-My age difference between… Expand
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