OXYGEN THERMOBAROMETRY OF ABYSSAL SPINEL PERIDOTITES - THE REDOX STATE AND C-O-H VOLATILE COMPOSITION OF THE EARTHS SUB-OCEANIC UPPER MANTLE

被引：179

作者：

BRYNDZIA, LT

WOOD, BJ

机构：

[1] NORTHWESTERN UNIV,DEPT GEOL SCI,EVANSTON,IL 60208

[2] UNIV BRISTOL,DEPT GEOL,BRISTOL BS8 1RJ,ENGLAND

来源：

AMERICAN JOURNAL OF SCIENCE | 1990年 / 290卷 / 10期

关键词：

D O I：

10.2475/ajs.290.10.1093

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We have applied the spinel peridotite oxygen barometer to abyssal spinel peridotites from the mid-Atlantic, central Indian, southwest Indian and American-Antarctic ocean ridge systems. The results indicate that the oxygen fugacity (fO2) of the suboceanic mantle is on average 0.9 ± 0.7 (n = 33; ± 1sd) log units below the Fayalite-Magnetite-Quartz (FMQ) fO2 buffer. Suboceanic mantle is more reduced than the subcontinental mantle. -from Authors

引用

页码：1093 / 1116

页数：24

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