Folded Layers in Melas Chasma, Central Valles Marineris
NASA/JPL/University of Arizona
Folded Layers in Melas Chasma, Central Valles Marineris
ESP_026312_1700  Science Theme: Sedimentary/Layering Processes
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There are folded layered deposits in the southern half of this image. How did this folding occur? On Earth, rocks are commonly folded when deeply buried and subject to high heat and pressure, which can make any rock flow. Such deep burial (and re-exposure or exhumation) is unlikely at this location.

In general Mars has experienced much less vertical motion of geologic strata than on Earth. Another possibility is that these layers were soft and deformable near the surface, such as wet or icy sediments. There are other folded layers in the giant Hellas impact basin, such as ESP_025780_1415.

Please get out your 3D glasses for a look at the stereo anaglyph here.

Written by: Alfred McEwen (audio recording by Tre Gibbs)   (25 April 2012)

This is a stereo pair with ESP_025811_1700.

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Acquisition date:07 March 2012 Local Mars time:15:05
Latitude (centered):-10.207° Longitude (East):284.665°
Range to target site:276.1 km (172.6 miles)Original image scale range:27.6 cm/pixel (with 1 x 1 binning) so objects ~83 cm across are resolved
Map projected scale:25 cm/pixel and North is upMap projection:Equirectangular
Emission angle:18.2° Phase angle:70.8°
Solar incidence angle:57°, with the Sun about 33° above the horizon Solar longitude:80.1°, Northern Spring

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