Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-29T12:48:44.145Z Has data issue: false hasContentIssue false
  • English
  • Français

1. The Origin of Iron Meteorites

Published online by Cambridge University Press:  12 April 2016

W. R. Kelly ,
E. R. Rambaldi  and
J. W. Larimer

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The chemistry of iron meteorites is compared to predictions of the chemical fractionations that develop during the cosmic history of the metal phase, from condensation and accretion through melting, segregation and freezing. Of the 12 resolved iron meteorite groups, 3 appear to have evolved in bodies which accreted at T > 1000° K. In several cases, the core-forming process seems to have ceased prematurely, just as the metal began to melt and flow (group IAB with its silicate inclusions) or after the metal aggregated into pods but before it sank to form a core (group IVA, with groups IIAB and IIIAB being in more advanced stages). The Shaw chondrite contains residual metal from a partial melting process, as required to complement the fractional melts which refroze prematurely in the case of group IAB meteorites.

Type
Part VII. Differentiated Meteorites
Information
International Astronomical Union Colloquium , Volume 39: Comets, Asteroids, Meteorites: Interrelations, Evolution and Origins , December 1977 , pp. 405 - 413
Copyright
Copyright © A.H. Delsemme 1977

References

Anders, E. 1964, Space Sci. Rev. 3, 583.Google Scholar
Fredriksson, K., and Mason, B. 1967, Geochim. Cosmochim. Acta, 31, 1705.Google Scholar
Cast, P. W. 1968, Geochim. Cosmochim. Acta, 32, 1057.Google Scholar
Goldstein, J. I., and Ogilvie, R. E. 1965, Geochim. Cosmochim. Acta, 29, 893.CrossRefGoogle Scholar
Goldstein, J. I., and Short, J. M. 1967a, Geochim. Cosmochim. Acta, 31, 1001.Google Scholar
Goldstein, J. I., and Short, J. M. 1967b, Geochim. Cosmochim. Acta, 31, 1733.Google Scholar
Kelly, W. R., and Larimer, J. W. 1976, Geochim. Cosmochim. Acta, (in press).Google Scholar
Larimer, J. W. 1968, Geochim. Cosmochim. Acta, 32, 1187.Google Scholar
Rambaldi, E., and Larimer, J. W. 1976, Earth Planet. Sci. Lett., (in press).Google Scholar
Scott, E.R.D. 1972, Geochim. Cosmochim. Acta, 36, 1205.Google Scholar
Scott, E.R.D., and Wasson, J. T. 1975, Submitted to Rev. Geophys. Space Sci.Google Scholar
Shaw, D. M. 1970, Geochim. Cosmochim. Acta, 34, 237.Google Scholar
Urey, H. C. 1952, The Planets, New Haven: Yale University Press.Google Scholar
Wood, J. A. 1964, Icarus, 3, 429.CrossRefGoogle Scholar