Elastic Anomalies across the α-β Phase Transition in Orthopyroxene: Implication for the Metastable Wedge in the Cold Subduction Slab

Li Luo1, Ningyu Sun1, Weigang Shi1, Zhu Mao2, Yingxin Yu1, Yanyao Zhang3 and Jung-Fu Lin4, (1)University of Science and Technology of China, Hefei, China, (2)University Science & Technology of China, Hefei, Anhui, China, (3)The University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States, (4)The University of Texas, Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States