What is Bajada in Geography?

Bajada is a continuous, gently sloping fringe of angular scree, coarse and gravel sand around the margins of an inland basin, or along the mountain range base, in a semi-arid region. It may be formed by the coalescence of a series of adjacent Alluvial Cones, each deposited by a torretial, mostly intermittent stream where it leaves a constricted valley e.g., in Nevada, Arizona, Mexico and the Atacama desert of central Chile.