The nature of granular materials undergoing high-strain rate compression plays a vital role in various applications, ranging from multi-hit capabilities in ceramic armor to vehicle-soil interaction. Previous work has qualitatively determined that particle morphology and packing structure strongly influence the constitutive response of granular materials subjected to dynamic loads. To understand the role these mechanisms play in the heterogeneity of the material response during high-strain rate deformation, it is necessary to develop a quantitative characterization tool to track deformation of granular media in three dimensions. In this talk, we propose a “quasi digital volume correlation (DVC)” approach to 3D displacement and strain field measurements in a granular material undergoing high-strain rate loading. A three-dimensional image of the sample is first obtained using micro-CT scanning. Digital Image Correlation (DIC) is performed on two-dimensional projection images obtained using X-ray Phase Contrast Imaging (XPCI) during impact. Combining the two-dimensional images with the micro-CT scan makes it possible to estimate the strain and fabric throughout the assembly with high temporal resolution. This characterization technique for granular materials will prove useful in probing the relationship between initial fabric and material response, shockwave propagation, and fragmentation processes.