CONTRASTING RE OS MAGMATIC FRACTIONATION IN PLANETARY BASALTS

被引：69

作者：

BIRCK, JL

ALLEGRE, CJ

机构：

[1] Laboratoire de Géochimie et Cosmochimie, Institut de Physique du Globe, UFR des Sciences de la Terre, 75252 Paris Cedex 05

来源：

EARTH AND PLANETARY SCIENCE LETTERS | 1994年 / 124卷 / 1-4期

关键词：

D O I：

10.1016/0012-821X(94)00086-7

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

This work reports the first Re-Os isotopic results for lunar basalts and eucrites. Both Re and Os concentrations are found to be very low and Re/Os ratios are close to chondritic. This contrasts with the much higher than chondritic Re/Os ratio of terrestrial basalts. Osmium displays a rather uniform solid/liquid fractionation in different planetary bodies (Moon, Earth, Eucrite Parent Body, Mars), whereas rhenium is about three orders of magnitude more incompatible in terrestrial basalt genesis. We argue that this is a function of oxygen fugacity in the source regions of basalts.

引用

页码：139 / 148

页数：10

共 49 条

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