CLUES TO EARLY SOLAR-SYSTEM HISTORY FROM CHROMIUM ISOTOPES IN CARBONACEOUS CHONDRITES

被引：147

作者：

ROTARU, M

BIRCK, JL

ALLEGRE, CJ

机构：

[1] Laboratoire de Geochimie et Cosmochimie IPG 4, Paris Cedex 05

来源：

NATURE | 1992年 / 358卷 / 6386期

关键词：

D O I：

10.1038/358465a0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The major mineral phases contained in individual carbonaceous chondrite meteorites exhibit both positive and negative anomalies in their Cr-54 abundances. No significant chromium-bearing phase has a terrestrial (solar) chromium isotopic composition. These observations provide evidence that the chromium isotopic composition of the Solar System results from the mixing of several major components with distinct isotopic compositions. The formation of the solar nebula from material carrying different isotopic signatures may provide constraints on nucleosynthetic models.

引用

页码：465 / 470

页数：6

共 51 条

[1] SOLAR-SYSTEM ABUNDANCES OF THE ELEMENTS [J].