Isotope geochemistry of boron in mantle rocks, tektites and meteorites.

Details Isotope geochemistry of boron in mantle rocks, tektites and meteorites. Isotope geochemistry of boron in mantle rocks, tektites and meteorites.

Sep 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995crasb.321..455c&link_type=abstract

Comptes Rendus de l'Academie des Sciences, Sér. II, Fasc. a, Tome 321, No. 6, p. 455 - 472

Computer Science

Earth Mantle: Isotopic Abundances, Tektites: Isotopic Abundances, Meteorites: Isotopic Abundances, Meteorites: Boron, Tektites: Boron, Earth Mantle: Boron

Scientific paper

Recent ion microprobe studies of fresh oceanic basalt glasses and chondrules from primitive meteorites give an overview of the distribution of boron isotopes in the mantle and in extra-terrestrial rocks. Isotopic variations imply that a significant part of the boron of the solar system was synthesized in the presolar cloud, likely by spallation reactions between low-energy cosmic rays and nebular hydrogen. These heterogeneities were partly preserved in chondrules which formed early in the evolution of the solar system but are not observed for the silicate Earth implying and efficient mixing just before or during the accretion of the Earth.

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