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This map is one in a series of 1:500,000-scale geologic maps initiated by NASA to investigate areas of particular scientific interest on Mars. The north Kasei Valles area merits detailed geologic study because it contains part of a large channel system whose age can be determined relative to geologic units that range in age from early intermediate (Early Hesperian) to the very late (Late Amazonian) periods of Martian history. Also, many geomorphic features in the map area suggest changes in water level and multiple erosional events associated with the Kasei Valles system. Later erosional events are indicative of spring sapping; small-scale, ground-water runoff; and water-mobilized debris flow. Therefore, this large-scale...
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Olympus Mons is the largest known volcanic construct in the Solar System; it is more than 600 km across and more than 27 km above datum. The volcano and the great scarp that bounds it have been the subject of much scientific controversy. Although it has been possible to generate an empirical model that closely resembles Olympus Mons, the dynamics of scarp formation are still unproven. The scarp area is thus a logical selection as a scientific study area. It has also been designated as a a candidate site for a proposed lander/rover/sample-return mission to Mars not only because the site may provide information about the origin of the scarp and the evolution of Olympus Mons, but also because rocks of widely diverse...
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