Layers Exposed Near the Mouth of Ladon Valles
Layers Exposed Near the Mouth of Ladon Valles
PSP_008931_1590  Science Theme: Landscape Evolution
This image crosses the mouth of Ladon Valles where it enters into Ladon Basin in Margaritifer Terra. Ladon Valles is an outflow channel forming a segment of a larger system that heads in Argyre basin to the south and eventually links up with the larger Ares Valles outflow channel to the north.

Water flowing out of Ladon Valles appears to have ponded within Ladon basin, as evidenced by the numerous exposed layers. It is possible that these layers are exposed as a result of late flow down Ladon Valles that occurred after Holden Crater formed to the southwest. This late flow may have eroded the pre-existing layers deposited by prior flow.

Written by: John Grant  (30 July 2008)
Acquisition date
22 June 2008

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
259.9 km (161.5 miles)

Original image scale range
52.1 cm/pixel (with 2 x 2 binning) so objects ~156 cm across are resolved

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50 cm/pixel and North is up

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Phase angle

Solar incidence angle
68°, with the Sun about 22° above the horizon

Solar longitude
88.8°, Northern Spring

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North azimuth:  97°
Sub-solar azimuth:  46.6°
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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.