Most Earth science theory flows from an understanding of the geology at or near the Earth surface. However, seismic images of the Earth's crust provide valuable information about deeper geological structures and tectonic processes that shape the lithosphere and the modern landscapes. They are, therefore, relevant for natural resource exploration, the distribution and management of ground-water resources and the study and mitigation of natural hazards such as earthquakes. They define the large-scale processes that control the evolution of the landscape and soils. This session invites oral and poster contributions in which crustal-scale active seismic studies of the Earth's crust from a few kilometers of the upper crust to the Moho form the basis for the interpretation and discussion of the tectonic processes controlling the architecture of orogenic belts, rifts, sedimentary basins, cratons, continental platforms and margins, and major intraoceanic features. We also invite contributions from waveform tomography for crustal-scale studies. Developments and advanced imaging techniques for optimum crustal imaging are also invited.