Barium Isotopes in Chondritic Meteorites: Implications for Planetary Reservoir Models-Reference-Cited by-同舟云学术

Barium Isotopes in Chondritic Meteorites: Implications for Planetary Reservoir Models

Published:2006-11-03 Issue:5800 Volume:314 Page:809-812
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Ranen Michael C.¹,Jacobsen Stein B.¹

Affiliation:

1. Department of Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02138, USA.

Abstract

High-precision barium isotope measurements yielded differences of up to 25 parts per million in the 137 Ba/ 136 Ba ratio and 60 parts per million in the 138 Ba/ 136 Ba ratio between chondrites and Earth. These differences probably arose from incomplete mixing of nucleosynthetic material in the solar nebula. Chondritic meteorites have a slight excess of supernova-derived material as compared to Earth, demonstrating that the solar nebula was not perfectly homogenized upon formation.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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