The grain-size dependence of yield strength during low-temperature plasticity of olivine: Evidence for weak lithospheric mantle

Lars N Hansen1, Kathryn M. Kumamoto2, Christopher Thom3, David Wallis1, David L Goldsby4, William B Durham5 and David L Kohlstedt6, (1)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (2)Stanford University, Department of Geological Sciences, Stanford, CA, United States, (3)University of Pennsylvania, Department of Earth and Environmental Sciences, Philadelphia, PA, United States, (4)Brown Univ, Providence, RI, United States, (5)MIT 54-720, Cambridge, MA, United States, (6)University of Minnesota Twin Cities, Minneapolis, MN, United States