Osmium recycling in subduction zones

被引：250

作者：

Brandon, AD ^{[1
]}

Creaser, RA ^{[1
]}

Shirey, SB ^{[1
]}

Carlson, RW ^{[1
]}

机构：

[1] UNIV ALBERTA, DEPT EARTH & ATMOSPHER SCI, EDMONTON, AB T6G 2E3, CANADA

来源：

SCIENCE | 1996年 / 272卷 / 5263期

关键词：

D O I：

10.1126/science.272.5263.861

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：

Peridotite xenoliths from the Cascade arc in the United States and in the Japan arc have neodymium and osmium isotopic compositions that are consistent with addition of 5 to 15 percent of subducted material to the present-day depleted mantle. These observations suggest that osmium can be partitioned into oxidized and chlorine-rich slab-derived fluids or melts. These results place new constraints on the behavior of osmium (and possibly other platinum group elements) during subduction of oceanic crust by showing that osmium can be transported into the mantle wedge.

引用

页码：861 / 864

页数：4

共 67 条

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