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Map of gully distribution on Mars

Map of gully distribution on Mars
Map of gully distribution on Mars Global distribution of gullied landforms as mapped using CTX data (covering ~85% of the planet at 6 m/pixel resolution at the time of mapping). Colors indicate orientation preference at each landform. Blue = poleward-facing, yellow = east/west, red = equatorward, purple = no preference. From <a href="http://www.sciencedirect.com/science/article/pii/S001910351500038X">Harrison et al. (2015)</a>