Channels with tributaries

Channels with tributaries

. Massive floods of water from the highlands into the Chryse basin in the lowlands may have carved these channels, located in the region of Mangala Vallis. The tributaries are rather shallow features, and join their main channels at quite acute angles evidence of their rapid formation. This image, taken from the Viking 1 orbiter, has a width of 400 thousand meters. (Courtesy of NASA.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University