Compatibility of rhenium in garnet during mantle melting and magma genesis

被引：110

作者：

Righter, K ^{[1
]}

Hauri, EH

机构：

[1] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA

[2] Carnegie Inst Washington, Dept Terr Magnetism, Washington, DC 20015 USA

来源：

SCIENCE | 1998年 / 280卷 / 5370期

关键词：

D O I：

10.1126/science.280.5370.1737

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：

Measurements of the partitioning of rhenium (Re) between garnet and silicate liquid from 1.5 to 2.0 gigapascals and 1250 degrees to 1350 degrees C show that Re is compatible in garnet. Oceanic island basalts (OIBs) have lower Re contents than mid-ocean ridge basalt, because garnet-bearing residues of deeper OIB melting will retain Re. Deep-mantle garnetite or eclogite may harbor the missing Re identified in crust-mantle mass balance calculations. Oceanic crust recycled into the upper mantle at subduction zones will retain high Re/Os (osmium) ratios and become enriched in radiogenic Os-187. Recycled eclogite in a mantle source should be easily traced using Re abundances and Os isotopes.

引用

页码：1737 / 1741

页数：5

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