Laboratory measurements of the viscous anisotropy of olivine aggregates

L. N. Hansen (), M. E. Zimmerman and D. L. Kohlstedt
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L. N. Hansen: University of Minnesota, 310 Pillsbury Drive SE, Minneapolis, Minnesota 55455, 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

Nature, 2012, vol. 492, issue 7429, 415-418

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.

Date: 2012
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DOI: 10.1038/nature11671

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