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

@article{Amelin2002LeadIA,
  title={Lead Isotopic Ages of Chondrules and Calcium-Aluminum-Rich Inclusions},
  author={Yuri Amelin and Alexander N. Krot and Ian Douglass Hutcheon and Alexander 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… 
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TLDR
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The chondrules, calcium-aluminum-rich inclusions (CAIs), and rims in chondritic meteorites could be formed when solid bodies are lifted by the aerodynamic drag of a magnetocentrifugally driven wind
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TLDR
The particle fluence inferred from the initial beryLLium-10/beryllium-9 is sufficient to produce other short-lived nuclides, calcium-41 and manganese-53, found in meteorites, but the high canonical abundance of aluminum-26 may still require seeding of the solar system by radioactive stellar debris.
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