A 3-component VSP data set was acquired in the Cajon Pass Drillhole, with multiply-polarized shear-wave source and a conventional P-wave source, producing a 9-component data set. The VSP data show effects on the full wavefield from the sediment-granite interface. Mode-converted waves are identified, with significant scattering of S-wave energy from the leading P-wavefront. Hodographs are used to display S-wave particle motions in two dimensions. Shear-wave splitting is observed in the hodographs. The shear-wave particle motion is used to infer anisotropy orientation with respect to the local strike of the San Andreas fault. Stress-induced fracturing is assumed to be a possible cause of the shear-wave splitting. A variation of particle motion orientation with depth is observed, implying a variation in anisotropy orientation as a function of depth.