Layered Deposits in Uzboi Vallis
NASA/JPL-Caltech/UArizona
Layered Deposits in Uzboi Vallis
PSP_010329_1525  Science Theme: Sedimentary/Layering Processes
Layered deposits in Uzboi Vallis sometimes occur in alcoves along the valley and/or below where tributaries enter it. These deposits may record deposition into a large lake that once filled Uzboi Vallis when it was temporarily dammed at its northern end by the rim of Holden Crater and before it was overtopped and breached allowing water to drain back out of the valley.

Layered deposits similar to those here may remain preserved where they were protected from erosion during drainage of the lake. Data from the CRISM instrument onboard MRO shows that clays are within these deposits that may differ from clays found elsewhere on the valley floor. Hence, the clays in these layers may have been washed into the lake from surrounding clay-bearing surfaces.



Written by: John Grant  (16 March 2017)

This is a stereo pair with PSP_008338_1525.
 
Acquisition date
09 October 2008

Local Mars time
15:47

Latitude (centered)
-27.441°

Longitude (East)
324.682°

Spacecraft altitude
257.3 km (159.9 miles)

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52.8 cm/pixel (with 2 x 2 binning) so objects ~158 cm across are resolved

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POSTSCRIPT
NASA’s Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA’s Science Mission Directorate, Washington. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.