This picture from NASA’s Mars Reconnaissance Orbiter shows a tiny (0.4 kilometer) mesa, one of several surrounded by silt dunes in Noctis Labyrinthyus, an extensively fractured segment on a western finish of Valles Marineris.
Heavily eroded, with clusters of boulders and silt dunes on a surface, this layered mesa is substantially comprised of sedimentary deposits that are being exhumed as it erodes. The layers themselves are manifest as gloomy bands along a reduce left corner of a mesa.
The map is projected here during a scale of 50 centimeters (19.7 inches) per pixel. [The strange picture scale is 20.7 centimeters (19.6 inches) per pixel (with 2 x 2 binning); objects on a sequence of 158 centimeters (62.2 inches) opposite are resolved.] North is up.
The University of Arizona, Tucson, operates HiRISE, that was built by Ball Aerospace Technologies Corp., Boulder, Colo. NASA’s Jet Propulsion Laboratory, a multiplication of Caltech in Pasadena, California, manages a Mars Reconnaissance Orbiter Project for NASA’s Science Mission Directorate, Washington.
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