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Magnetism on the angrite parent body and the early differentiation of planetesimals.
MedLine Citation:
PMID:  18974346     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
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 approximately 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.
Authors:
Benjamin P Weiss; James S Berdahl; Linda Elkins-Tanton; Sabine Stanley; Eduardo A Lima; Laurent Carporzen
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  322     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2008 Oct 
Date Detail:
Created Date:  2008-10-31     Completed Date:  2008-11-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  713-6     Citation Subset:  -    
Affiliation:
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 54-814, 77 Massachusetts Avenue, Cambridge, MA 02139, USA. bpweiss@mit.edu
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