INSET: USGS IMAP 1049: Geologic map of the Amazonis Quadrangle of Mars

The Amazonis quadrangle lies within the northern sparsely cratered hemisphere of Mars (Carr and others, 1973) The dominant structural ad physiographic features of the quadrangle are low feature-less plains (Amazonis Planitia) in the center third of the quadrangle, the western flanks of the large volcanic construct, Olympus Mons, and its associated aureole deposits (Lycus Sulci), which...