Valles Marineris - with 3D (Released 25 February 2003)

The top half of this THEMIS visible image shows interior layered deposits that have long been recognized in Valles Marineris. Upon close examination, the layers appear to be eroding differently, indicating different levels of competency. This, in turn, may be interpreted to indicate different materials, and/or depositional processes. At thebottom of the image, materials eroded from the walls of the canyon form dunes and a sand sheet that surrounds the remnant hills.