Open Access

Widespread magmatic activities on the angrite parent body at 4562 Ma ago

Earth, Planets and Space201457:BF03351858

https://doi.org/10.1186/BF03351858

Received: 18 May 2005

Accepted: 27 July 2005

Published: 20 June 2014

Abstract

Mn-Cr chronology of four quenched angrites showed that they formed nearly at the same time (4562 Ma) on the surface of the parent-body. Based on the chemical compositions, the cosmic ray exposure ages, and considerations on the thermal history of an achondrite parent-body, we suggest that the four angrites formed on top of a shallow magma ocean on the angrite parent body.

Key words

Age angrites Mn-Cr dating SIMS