Material ejected from impacts on Mars

Material ejected from impacts on Mars

Fig. 2.24 . Some Martian craters are surrounded by discrete lobes of fresh-appearing flows, each surrounded by a low ridge or rampart and sometimes layered. The unique pattern of ejected material can be attributed to melting of water ice by the heat of impact. An instrument aboard the 2001 Mars Odyssey orbiter took this image. (Courtesy NASA/JPL/ASU.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University