Localization, Weakening and Fluid-rock Coupling Mechanisms in Gypsum: Development and Initial Data From a New, Combined, Rotary Shear and Acoustic Emission Apparatus.

Philip M Benson1, Giacomo Pozzi2, Simon Guerin-Marthe3, Nicola De Paola4, Stefan Bjorklund Nielsen5 and Ricardo Tomas1, (1)University of Portsmouth, Portsmouth, United Kingdom, (2)University of Durham, Durham, United Kingdom, (3)University of Durham, Department of Earth Sciences, Durham, United Kingdom, (4)Durham University, Earth Sciences, Durham, United Kingdom, (5)Durham University, Department of Earth Sciences, Durham, United Kingdom