This area of Mars imaged by NASA Mars Odyssey shows a wonderful example of relative geologic dating. Ancient lava flows and escarpments are mantled by younger impact ejecta, which was cut by a younger graben and resurfaced by smaller impact craters.
This area of Mars imaged by NASA Mars Odyssey shows a wonderful example of relative geologic dating. Ancient lava flows and escarpments are mantled by younger impact ejecta, which was cut by a younger graben and resurfaced by smaller impact craters.