Display options
Cite
Dai ZR, Bradley JP, Joswiak DJ, et al. Possible in situ formation of meteoritic nanodiamonds in the early Solar System. Nature. 2002;418(6894):157-9doi: 10.1038/nature00897.
Dai, Z. R., Bradley, J. P., Joswiak, D. J., Brownlee, D. E., Hill, H. G., & Genge, M. J. (2002). Possible in situ formation of meteoritic nanodiamonds in the early Solar System. Nature, 418(6894), 157-9. https://doi.org/10.1038/nature00897
Dai, Z R, et al. "Possible in situ formation of meteoritic nanodiamonds in the early Solar System." Nature vol. 418,6894 (2002): 157-9. doi: https://doi.org/10.1038/nature00897
Dai ZR, Bradley JP, Joswiak DJ, Brownlee DE, Hill HG, Genge MJ. Possible in situ formation of meteoritic nanodiamonds in the early Solar System. Nature. 2002 Jul 11;418(6894):157-9. doi: 10.1038/nature00897. PMID: 12110882.
Copy Download .nbib Format: NLM
Share it on

Nature. 2002 Jul 11;418(6894):157-9. doi: 10.1038/nature00897.

Possible in situ formation of meteoritic nanodiamonds in the early Solar System.

Nature

Z R Dai, J P Bradley, D J Joswiak, D E Brownlee, H G M Hill, M J Genge

Affiliations

  1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.

PMID: 12110882 DOI: 10.1038/nature00897

Abstract

Grains of dust that pre-date the Sun provide insights into their formation around other stars and into the early evolution of the Solar System. Nanodiamonds recovered from meteorites, which originate in asteroids, have been thought to be the most abundant type of presolar grain. If that is true, then nanodiamonds should be at least as abundant in comets, because they are thought to have formed further out in the early Solar System than the asteroid parent bodies, and because they should be more pristine. Here we report that nanodiamonds are absent or very depleted in fragile, carbon-rich interplanetary dust particles, some of which enter the atmosphere at speeds within the range of cometary meteors. One interpretation of the results is that some (perhaps most) nanodiamonds formed within the inner Solar System and are not presolar at all, consistent with the recent detection of nanodiamonds within the accretion discs of other young stars. An alternative explanation is that all meteoritic nanodiamonds are indeed presolar, but that their abundance decreases with heliocentric distance, in which case our understanding of large-scale transport and circulation within the early Solar System is incomplete.

Publication Types