HiRISE: Irregular crater intersecting graben in Tractus Albus

This crater, of which only a small portion is visible in the full HiRISE image, is very irregularly shaped and might suggest that some underlying liquid was present that made it so elongated after the initial impact. Another reason for the crater’s shape might be that it was caused by a binary asteroid pair or a meteorite that broke into multiple fragments just before hitting the ground leading to the formation of a number of superimposed craters that produced this odd-shaped depression. Such craters have been previously observed…. [More at link]

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