Layers on floor of Mawrth Vallis Long/lat: from 341.40E, 24.20N to 341.70E, 23.60N Rational: Understanding the formation of the layered unit, its depositional.

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Layers on floor of Mawrth Vallis Long/lat: from E, 24.20N to E, 23.60N Rational: Understanding the formation of the layered unit, its depositional process, could be helped by analyzing the large series of layers exposed on Mawrth Vallis’ flank and floor. Some of these layers may be exhumed only there and not on the plateau. Morphology and mineralogy: The lower part of the flanks of Mawrth Vallis and its floor show long layers of light-toned rocks, with some dark interlayered beds. The mineralogy changes from Fe/Mg-smectites to Al-phyllosilicates, but most of the rocks are Fe/Mg-smectites bearing. MSL tasks: At large scale, study the layering, the dips of layers, the fracturation patterns, possible traces of the outflow that formed Mawrth Vallis. At small scale, study the layering, the grain structure, the mineralogy and chemistry of the rocks and the variations between layers. HRSC mosaic with HRSC nadir & color images

2 km HiRISE & CTX mosaic with HRSC DTM HiRISE & CTX mosaic with HiRISE color images 2 km

500 m HiRISE mosaic with HiRISE color images Dark layer