Water-Induced Fabric Transitions in Olivine
Top Cited Papers
- 24 August 2001
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 293 (5534), 1460-1463
- https://doi.org/10.1126/science.1062235
Abstract
The interpretation of seismic anisotropy in Earth's upper mantle has traditionally been based on the fabrics (lattice-preferred orientation) of relatively water-poor olivine. Here we show that when a large amount of water is added to olivine, the relation between flow geometry and seismic anisotropy undergoes marked changes. Some of the puzzling observations of seismic anisotropy in the upper mantle, including the anomalous anisotropy in the central Pacific and the complicated anisotropy in subduction zones, can be attributed to the enrichment of water in these regions.Keywords
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