Stratigraphy of Alluvial Fans in Saheki Crater
NASA/JPL/University of Arizona
Stratigraphy of Alluvial Fans in Saheki Crater
ESP_044491_1585  Science Theme: Fluvial Processes


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Alluvial fans are gently-sloping wedges of sediments deposited by flowing water. Some of the best-preserved alluvial fans on Mars are in Saheki Crater, an area that we've imaged many times previously.

This observation covers two impact craters that expose the stratigraphy of the fans. This image (and another one to complete stereo coverage) will be used to measure the depth of the fan and describe its depositional history, as well as closer view of some of these layers.

Written by: Alfred McEwen (audio: Tre Gibbs)   (23 March 2016)

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Acquisition date:23 January 2016 Local Mars time:15:11
Latitude (centered):-21.430° Longitude (East):73.101°
Range to target site:258.6 km (161.6 miles)Original image scale range:25.9 cm/pixel (with 1 x 1 binning) so objects ~78 cm across are resolved
Map projected scale:25 cm/pixel and North is upMap projection:Equirectangular
Emission angle:1.5° Phase angle:66.7°
Solar incidence angle:66°, with the Sun about 24° above the horizon Solar longitude:98.9°, Northern Summer

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