This image from NASA Mars Reconnaissance Orbiter shows a transect of Coprates Chasma wall stratigraphy, which includes moving down sequence: the southern plateau, wall spurs, fans of eroded material, gullies, sand dunes, and canyon floor.
This image from NASA Mars Reconnaissance Orbiter shows a transect of Coprates Chasma wall stratigraphy, which includes moving down sequence: the southern plateau, wall spurs, fans of eroded material, gullies, sand dunes, and canyon floor.