Evidence for impact shock and regolith transportation on CM, CI, and CV chondrite parent asteroids

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Michael Zolensky, Takashi Mikouchi, Kenji Hagiya, Kazumasa Ohsumi, Mutsumi Komatsu, Andrew Cheng, Loan Le

MAPS
Version of Record online: 22 September 2022

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“We explore impact shock processing of the regolith of parent asteroids of carbonaceous chondrites, which has not been considered a major process for hydrous carbonaceous chondrites. We describe shock-produced minerals and features found in brecciated CI, CM, and CV chondrites, including agglutinates, a glassy melt pod, a shock melt vein, and melted sulfides. We also reexamine cognate clasts present in the Vigarano CV3 chondrites which appear to derive from asteroid ponds and exhibit cross-bedded dish structures.”

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