Physical Sciences and Mathematics Commons^™

Evolution Of Olivine Crystallographic Preferred Orientation In The Upper Mantle -- Implications For The Interpretation Of Seismic Anisotropy, Yuval Boneh

Arts & Sciences Electronic Theses and Dissertations

Earth’s plate tectonics is the outermost manifestation of mantle convection. Understanding plate tectonics at the global scale requires understanding of regional processes near plate boundaries. Flow patterns in the upper mantle are generally inferred from observations of anisotropy of seismic wave speed. In plate interiors, where flow patterns are assumed to be simple, interpretation of seismic anisotropy is straightforward. However, near plate boundaries, where flow patterns are complex, different strategies for interpreting seismic anisotropy may be required. This dissertation examines, using experimental and numerical tools, the effects of complex flow patterns on the evolution of olivine crystallographic preferred orientation (CPO). …