Mantled Craters in Terra Cimmeria
NASA/JPL/University of Arizona
Mantled Craters in Terra Cimmeria
PSP_006736_1325  Science Theme: Glacial/Periglacial Processes
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This image shows the intersection of two overlapping craters, although it is unknown which of the two formed first.

The two craters are covered in a mantling material, which gives them a smooth appearance. The mantling unit is thought to be water ice-rich. Concentric circles are visible on the floor of one crater. It is likely that these circles are evidence of ice-rich material that flowed off the crater wall, driven by gravity, onto the crater floor.

Outside of the craters, the plains have a pitted or dissected texture. Both of these textures are suggestive of material that once held ice that has since disappeared allowing the remaining soil to collapse into the subsurface. There are also dark dust devil tracks across the scene.

Written by: Kelly Kolb   (14 May 2008)

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Acquisition date:03 January 2008 Local Mars time:14:42
Latitude (centered):-47.369° Longitude (East):151.547°
Range to target site:249.8 km (156.1 miles)Original image scale range:25.0 cm/pixel (with 1 x 1 binning) so objects ~75 cm across are resolved
Map projected scale:25 cm/pixel and North is upMap projection:Equirectangular
Emission angle:0.7° Phase angle:64.1°
Solar incidence angle:63°, with the Sun about 27° above the horizon Solar longitude:12.1°, Northern Spring

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