Colorful Rocks in Ritchey Crater
NASA/JPL/University of Arizona
Colorful Rocks in Ritchey Crater
ESP_011635_1510  Science Theme: Impact Processes
Dutch  French  German  Italian  Spanish 


800  1024  
1152  1280  
1440  1600  
1920  2048  
The enhanced color image of this observation includes some interesting features in and near the central uplift of Ritchey Crater.

At the top is an ancient streambed, and above center are multicolored rocks and minerals in the central uplift. Large impact craters are unstable when they are formed, because their walls are so steep. Gravity causes the walls to collapse toward the center of the crater, colliding to form an uplift or peak. This process of central uplift formation can bring rocks from deep in the crater walls up to the surface.

The angular bright blocks near the center of this image show that this process breaks the wall rocks into fragments as the central uplift is formed.

Written by: Ken Herkenhoff   (25 February 2009)

This is a stereo pair with PSP_002682_1510.

Click to share this post on Twitter Click to share this post on Facebook Click to share this post on Google+ Click to share this post on Tumblr

Acquisition date
19 January 2009

Local Mars time:

Latitude (centered)

Longitude (East)

Range to target site
264.8 km (165.5 miles)

Original image scale range
26.5 cm/pixel (with 1 x 1 binning) so objects ~79 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection

Emission angle:

Phase angle:

Solar incidence angle
61°, with the Sun about 29° above the horizon

Solar longitude
194.0°, Northern Autumn

North azimuth:

Sub-solar azimuth:
Black and white
map projected  non-map

IRB color
map projected  non-map

Merged IRB
map projected

Merged RGB
map projected

RGB color
non-map projected

Black and white
map-projected   (1363MB)

IRB color
map-projected   (613MB)

Black and white
map-projected  (735MB)
non-map           (738MB)

IRB color
map projected  (223MB)
non-map           (556MB)

Merged IRB
map projected  (343MB)

Merged RGB
map-projected  (324MB)

RGB color
non map           (564MB)
Map-projected, reduced-resolution
Full resolution JP2 download
Anaglyph details page

DTM details page

B&W label
Color label
Merged IRB label
Merged RGB label
EDR products

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

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

For information about NASA and agency programs on the Web, visit: 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.