Delving into Allende's dark secrets

Sephton, M. A.; Howard, L. E.; Bland, P. A.; James, R. H.; Russell, S. S.; Prior, D. J. and Zolensky, M. E. (2006). Delving into Allende's dark secrets. Astronomy & Geophysics, 47(6) pp. 37–38.

DOI: https://doi.org/10.1111/j.1468-4004.2006.47637.x

Abstract

Meteorites such as Allende - type III carbonaceous chondrites - contain strange dark clasts that would have been formed as part of early planet-forming processes in the early solar system. Opinion has been divided for years on the provenance of these components. Formation of source materials in the protoplanetary disc, impact-induced fragmentation of the parent asteroid or complex aqueous and thermal histories have all been suggested. We describe new analytical approaches that have cast light on these dark objects and their origins.

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