This image shows a portion of two impact craters on the floor of Newton Basin where a smaller crater formed within a earlier larger one. The larger crater's north rim can be seen diagonally (southwest-northeast) across the image and the smaller crater's north rim is near the bottom of the image.

Several gullies are incised along the interior wall of the larger crater. These gullies start near the top of the wall and can be traced across a break in slope partway down the wall (see subimage, 750 meters across). This break in slope occurs along the entire portion of the crater wall, and appear shallower just above the break in slope, and deeper below the slope break. This suggests that the fluid which eroded and carved out the wall materials forming the gullies, increased in velocity after the slope break, creating a deeper section.



Written by: Kelly Kolb  (5 July 2007)


This is a stereo pair with PSP_002686_1410.