Crust-mantle coupling and dynamics of lithospheric faults networks Shear wave splitting measurements in continental domains and seismic properties of mantle xenoliths suggest that the measured seismic anisotropy is mainly associated to a olivine LPO generated within the lithospheric mantle during major orogenic processes. A seismic anisotropy survey in the SE Brazil may help to answer these questions. The Ribeira belt displays a significant change in its tectonic pattern.
Numerical models suggest that the change is related to the termination of the craton.
In addition, Pn and surface waves data will be analyzed in order to constrain the structure of the uppermost mantle and the depth-dependence of the anisotropy. Crust-mantle coupling Upper mantle deformation beneath lithospheric transcurrent faults. Study of the effect of a cratonic root on the asthenospheric flow by comparison of forward model predictions and shear wave splitting measurements. Analysis of the effect of the Tristan da Cunha and Trindade plumes on the upper mantle beneath SE Brazil.