Magnetism on the angrite parent body and the early differentiation of planetesimals

Benjamin P. Weiss, James S. Berdahl, Linda Elkins-Tanton, Sabine Stanley, Eduardo A. Lima, Laurent Carporzen

Research output: Contribution to journalArticle

78 Scopus citations

Abstract

Angrites are among the oldest known pristine basaltic meteorites and record the earliest stages of planet formation and differentiation. Our paleomagnetic analysis of three angrites found that they record a past magnetic field of ∼10 microteslas on the angrite parent body extending from 4564 to at least 4558 million years ago. Because the angrite paleomagnetic record extends beyond the expected lifetime of the early circumstellar disk, these paleofields were probably generated internally on the angrite parent body, possibly by an early dynamo in a rapidly formed metallic core.

Original languageEnglish (US)
Pages (from-to)713-716
Number of pages4
JournalScience
Volume322
Issue number5902
DOIs
StatePublished - Oct 31 2008
Externally publishedYes

ASJC Scopus subject areas

  • General

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    Weiss, B. P., Berdahl, J. S., Elkins-Tanton, L., Stanley, S., Lima, E. A., & Carporzen, L. (2008). Magnetism on the angrite parent body and the early differentiation of planetesimals. Science, 322(5902), 713-716. https://doi.org/10.1126/science.1162459