Western Medusa Fossae Formation: Dust and Dunes
NASA/JPL/University of Arizona
Western Medusa Fossae Formation: Dust and Dunes
ESP_041864_1745  Science Theme: Aeolian Processes


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This beautifully contrasted infrared-color image shows an area approximately 600 by 900 meters. This is a close-up of the western Medusa Fossae formation where we can see dust-covered rocky, bedrock surfaces (beige) and a bluish-tinted sand sheet that transitions into several dunes.

The bluish sand is thought to originate from the bedrock that lies beneath the dust. If true, this has implications for the composition of the formation, which has been highly debated over the years.

Written by: Livio Tornabene, Elizabeth Silber, and Kayle Hansen   (16 September 2015)

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Acquisition date:02 July 2015 Local Mars time:14:28
Latitude (centered):-5.431° Longitude (East):150.753°
Range to target site:267.8 km (167.4 miles)Original image scale range:26.8 cm/pixel (with 1 x 1 binning) so objects ~80 cm across are resolved
Map projected scale:25 cm/pixel and North is upMap projection:Equirectangular
Emission angle:2.3° Phase angle:40.2°
Solar incidence angle:38°, with the Sun about 52° above the horizon Solar longitude:6.9°, Northern Spring

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