The Formation of Chondrules at High Gas Pressures in the Solar Nebula

Details The Formation of Chondrules at High Gas Pressures in the Solar Nebula The Formation of Chondrules at High Gas Pressures in the Solar Nebula

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000sci...290.1751g&link_type=abstract

Science, Volume 290, Issue 5497, pp. 1751-1754 (2000).

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Scientific paper

High-precision magnesium isotope measurements of whole chondrules from the Allende carbonaceous chondrite meteorite show that some aluminum-rich Allende chondrules formed at or near the time of formation of calcium-aluminum-rich inclusions and that some others formed later and incorporated precursors previously enriched in magnesium-26. Chondrule magnesium-25/magnesium-24 correlates with [magnesium]/[aluminum] and size, the aluminum-rich, smaller chondrules being the most enriched in the heavy isotopes of magnesium. These relations imply that high gas pressures prevailed during chondrule formation in the solar nebula.

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