Geochemistry: 142Nd evidence for early (>4.53 Ga) global differentiation of the silicate earth

Science

Volumn 309, Issue 5734, 2005, Pages 576-581

  Boyet, M ^a   Carlson, R W ^a  

^a GEOPHYSICAL LABORATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EARTH (PLANET); GEOCHEMISTRY; MARTIAN SURFACE ANALYSIS; MOON; NEODYMIUM; SAMARIUM COMPOUNDS;

COMPOSITIONAL STRUCTURE; ENRICHER RESERVOIR; TERRESTRIAL ROCKS;

ROCKS;

ISOTOPE; NEODYMIUM; NEODYMIUM 142; NEODYMIUM 143; SAMARIUM; SAMARIUM 146; SAMARIUM 147; SILICATE; UNCLASSIFIED DRUG;

GEOCHEMISTRY; METEORITE;

ARTICLE; ASTRONOMY; EVOLUTION; HALF LIFE TIME; MASS; MATHEMATICAL ANALYSIS; MEASUREMENT; PRIORITY JOURNAL; RADIOACTIVITY; ROCK;

EID: 22744447157     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1113634     Document Type: Article

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55. Acquisition of our Triton mass spectrometer was made possible by NSF grant EAR-0320589 and a matching contribution from the Carnegie Institution of Washington. We thank C. Tilton for generously donating his meteorite collection to D.T.M., which facilitated this project. Abee and Allende are from the Smithsonian (United States National Museum nos. 6581 and 3329, respectively), provided by T. McCoy. We thank M. Horan and T. Mock for analytical support and S. Shirey and two anonymous reviewers for their constructive comments that greatly benefited the paper.