Читать книгу Mantle Convection and Surface Expressions - Группа авторов - Страница 46

There is only one room temperature deformation experiment measuring texture development in Ca‐Pv (Miyagi et al., 2009). This experiment measured texture development at ~25–50 GPa and found a {100} compression texture (Figure 2.4c) consistent with deformation on the {110}〈10〉 slip system (Table 2.1; pseudo cubic reference). This is consistent with computational work (Ferré et al., 2009). One should note that Ca‐Pv deviates from the cubic symmetry but the structure is poorly constrained due to the small deviations from cubic symmetry. Several potential lower symmetry structures have been proposed (Shim et al., 2002).