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Geologic map of the MTM -85080 quadrangle (revised), Planum Australe region of Mars Geologic map of the MTM -85080 quadrangle (revised), Planum Australe region of Mars
Published geologic maps of south polar region of Mars have been based on either Mariner 9 (Condit Soderblom, 1978; Scott and Carr, 1978) or Viking Orbiter (Tanaka and Scott, 1987) images. The mapped extent of the southern layered deposits differs in many places on these maps and on our maps. These differences reflect the difficulty in accurately determining the location of the contact...
Geologic map of the MTM-15147 quadrangle, Mangala Valles region of Mars Geologic map of the MTM-15147 quadrangle, Mangala Valles region of Mars
The map area is in the Mangala-Memnonia region (fig. 1), which contains remarkably diverse geologic features and terrain types. Studies of the Mariner 9 images revealed the wide range of ages of the major rock units in this region; age assignments were based on the density of impact craters preserved on the various surfaces (Mutch and others, 1976, p. 56-60; Scott and Carr, 1978; Mutch...