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MER Spirit - Trek over Husband Hill
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Embedded Pebbles in Haussmann
This false-color mosaic was taken with Spirit's panoramic camera
on sol, 554, July 25, 2005, while Spirit was
sitting on the "Voltaire" layered rock outcrop.
A rock within the Voltaire outcrop, called "Haussmann," exhibited
many interesting patterns, including rounded pebbles that are
approximately 2 to 3 centimeters (.8 to 1.2 inches) across. The
pebbles are embedded in a finer-grained matrix of material. The
striations in Haussmann are noted. The rounded pebbles must have
been exposed to erosion in the past, before they were embedded into the rock.
The layered rocks in this area are thought to have formed from an
impact event, as ejected deposits. They illustrate the complexity
of the rocks found by Spirit as the rover made its way to the summit
of Husband Hill.
Image and text credit: NASA/JPL-Caltech
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