A bajada is a broad, gently sloping depositional surface formed by the coalescence of multiple alluvial fans at the base of a mountain range in arid and semi-arid regions. Bajadas are significant in understanding the sedimentary processes in desert environments and the interaction between tectonics, erosion, and sedimentation.
Source Blair, T. C., & McPherson, J. G. (1994). “Alluvial Fans and Their Natural Distinction from Rivers Based on Morphology, Hydraulic Processes, Sedimentary Processes, and Facies Assemblages.” Journal of Sedimentary Research, 64(3), 450-489.