Osmium Recycling in Subduction Zones

Details Osmium Recycling in Subduction Zones Osmium Recycling in Subduction Zones

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996sci...272..861b&link_type=abstract

Science, Volume 272, Issue 5263, pp. 861-864

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54

Scientific paper

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.

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