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Laboratory measurements of the viscous anisotropy of olivine aggregates

Author

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  • L. N. Hansen

    (University of Minnesota, 310 Pillsbury Drive SE, Minneapolis, Minnesota 55455, USA
    Present address: Department of Geological and Environmental Sciences, Stanford University, 450 Serra Mall, Bldg 320, Stanford, California 94305, USA.)

  • M. E. Zimmerman

    (University of Minnesota, 310 Pillsbury Drive SE, Minneapolis, Minnesota 55455, USA)

  • D. L. Kohlstedt

    (University of Minnesota, 310 Pillsbury Drive SE, Minneapolis, Minnesota 55455, USA)

Abstract

Measurements of the viscous anisotropy of highly deformed polycrystalline olivine find it to be approximately an order of magnitude larger than that predicted by grain-scale simulations; the maximum degree of anisotropy is reached at geologically low shear strain, such that deforming regions of the Earth’s upper mantle should exhibit significant viscous anisotropy.

Suggested Citation

  • L. N. Hansen & M. E. Zimmerman & D. L. Kohlstedt, 2012. "Laboratory measurements of the viscous anisotropy of olivine aggregates," Nature, Nature, vol. 492(7429), pages 415-418, December.
    • Handle: RePEc:nat:nature:v:492:y:2012:i:7429:d:10.1038_nature11671
    DOI: 10.1038/nature11671
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