Sedimentary Layers in Columbus Crater
NASA/JPL/University of Arizona
Sedimentary Layers in Columbus Crater
PSP_010281_1510  Science Theme: Sedimentary/Layering Processes
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This image covers a portion of the northeast inner wall of Columbus Crater, located in the southern hemisphere of Mars and is approximately 100 kilometers (60 miles) in diameter.

Layered sedimentary rocks are found on the crater walls and floor, and may have been deposited by water or by wind. These rocks have subsequently been eroded to expose their successive layers in cross-section. The near-infrared spectrometer CRISM has revealed that these layers contain various hydrated minerals.

Visible here is a north-facing slope (roughly 250 meters, or 800 feet, across) exposing finely layered sedimentary rock. In this false-color view, layers with a dark blue appearance may be intrinsically darker, or may have a texture that more effectively collects dark sand particles, than adjacent layers with a brighter appearance.

Written by: James Wray   (17 December 2008)

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Acquisition date
05 October 2008

Local Mars time:
15:42

Latitude (centered)
-28.644°

Longitude (East)
194.325°

Range to target site
256.0 km (160.0 miles)

Original image scale range
25.6 cm/pixel (with 1 x 1 binning) so objects ~77 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
0.5°

Phase angle:
70.9°

Solar incidence angle
70°, with the Sun about 20° above the horizon

Solar longitude
137.3°, Northern Summer

North azimuth:
97°

Sub-solar azimuth:
38.0°
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HiView

NB
IRB: infrared-red-blue
RGB: red-green-blue
About color products (PDF)

Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images



USAGE POLICY
All of the images produced by HiRISE and accessible on this site are within the public domain: there are no restrictions on their usage by anyone in the public, including news or science organizations. We do ask for a credit line where possible:
NASA/JPL/University of Arizona



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.