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Lead Isotopic Ages of Chondrules and Calcium-Aluminum-Rich Inclusions
Abstract
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 CR CAIs and chondrules inferred from the differences in their initial 26 Al/ 27 Al ratios and supports the chronological significance of the 26 Al- 26 Mg systematics.
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Cited by
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O'Neil, J., Carlson, R. W., Francis, D., & Stevenson, R. K. (2008) · Science · doi:10.1126/science.1161925 · Cited by 367
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Chambers, J. E. (2004) · Earth and Planetary Science Letters · doi:10.1016/j.epsl.2004.04.031 · Cited by 341
New Perspectives on Ancient Mars
Solomon, S. C., Aharonson, O., Aurnou, J. M., Banerdt, W. B., Carr, M. H., Dombard, A. J., Frey, H. V., Golombek, M. P., Hauck, S. A., Head, J. W., et al. (2005) · Science · doi:10.1126/science.1101812 · Cited by 316
Homogeneous Distribution of 26 Al in the Solar System from the Mg Isotopic Composition of Chondrules
Villeneuve, J., Chaussidon, M., & Libourel, G. (2009) · Science · doi:10.1126/science.1173907 · Cited by 316
Metadata
- Authors
- Amelin, Y., Krot, A. N., Hutcheon, I. D., & Ulyanov, A. A.
- Venue
- Science
- Published
- 2002-09-06
- Volume
- 297
- Issue
- 5587
- Pages
- 1678-1683
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2126527044
- Cited by
- 795
- References
- 0
- FWCI
- 20.31
- Type
- journal article
- Language
- en
- Open access
- closed
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- Amelin, Y., Krot, A. N., Hutcheon, I. D., & Ulyanov, A. A. (2002). Lead Isotopic Ages of Chondrules and Calcium-Aluminum-Rich Inclusions. Science. https://doi.org/10.1126/science.1073950
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