Asteroids and meteorites: Origin of stony-iron meteorites at mantle-core boundaries

Richard Greenberg, Clark R. Chapman

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Stony-iron meteorites formed at the core/mantle interfaces of small asteroidal parents. The mesosiderites formed when the thick crust of a largely molten parent body (100-200 km in diameter) foundered and sank through the mantle to the core. Pallasites formed in smaller parent bodies (50-100 km) in which olivine crystals from the partially molten mantle sank to the core/mantle interface and rafted there. Subsequent collisions stripped away the rocky mantles of both kinds of parent bodies, exposing the stony-iron surfaces of their cores to direct impacts, which continue to knock off meteorite fragments.

Original languageEnglish (US)
Pages (from-to)267-279
Number of pages13
JournalIcarus
Volume57
Issue number2
DOIs
StatePublished - Feb 1984

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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