This image of Tharsis Rise from NASA Mars Odyssey shows a series of linear features called graben, which are associated with crustal extension resulting in up and down blocks of crust that run perpendicular to the direction of the extension.
This image of Tharsis Rise from NASA Mars Odyssey shows a series of linear features called graben, which are associated with crustal extension resulting in up and down blocks of crust that run perpendicular to the direction of the extension.