Distribution of plains on Mars

Distribution of plains on Mars

Fig. 8.15 . Low-lying volcanic plains, each designated as a planitia, are located throughout the northern hemisphere of Mars. Other relatively smooth regions are found at the top of elevated plateaus, each called a planum; they are located in the southern side of the equator. Small solid dots denote volcanoes, including Olympus Mons that rises out of the Tharsis bulge, or uplift. The small crosses designate the landing sites of Viking 1 and Pathfinder in Chryse Planitia (upper right) and Viking 2 in Utopia Planitia (top center).

Copyright 2010, Professor Kenneth R. Lang, Tufts University