Light-Toned Layered Rock Outcrop in Ladon Valles
NASA/JPL/University of Arizona
Light-Toned Layered Rock Outcrop in Ladon Valles
ESP_023383_1590  Science Theme: Geologic Contacts/Stratigraphy
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Ladon Vallis, an approximately 600 kilometer (370 mile) long outflow channel, is part of a larger system that begins in Argyre basin to the south and extends northwards across the Southern Highlands towards the larger Ares Vallis outflow system. This image shows part of Ladon Vallis that is located within Ladon basin.

Here the extensive laterally continuous outcrops of layered light-tone units and deposits contrasts sharply with the darker-toned materials that cover the channel floor. Dark-toned dunes partly infill fractures and impact craters.

These extensive layers may have resulted from ponding of water and sediments that flowed into the basin from Ladon Vallis. Subsequent episodic flood events out of the basin to the north may have eroded and exposed the pre-existing sedimentary layers.

Written by: Ginny Gulick   (5 October 2011)

This is a stereo pair with PSP_006637_1590.

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Acquisition date
23 July 2011

Local Mars time:
14:04

Latitude (centered)
-20.837°

Longitude (East)
330.333°

Range to target site
280.4 km (175.3 miles)

Original image scale range
28.1 cm/pixel (with 1 x 1 binning) so objects ~84 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
22.2°

Phase angle:
52.7°

Solar incidence angle
31°, with the Sun about 59° above the horizon

Solar longitude
332.8°, Northern Winter

North azimuth:
95°

Sub-solar azimuth:
18.9°
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Postscript
For information about NASA and agency programs on the Web, visit: http://www.nasa.gov. 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. Lockheed Martin Space Systems is the prime contractor for the project and built the spacecraft. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. The image data were processed using the U.S. Geological Survey’s ISIS3 software.