Uplifted Jumble of Ancient Bedrock
Uplifted Jumble of Ancient Bedrock
ESP_025296_1535  Science Theme: Geologic Contacts/Stratigraphy
Impact craters larger than a certain size have complex forms, including central peaks or other structures that result from structural uplift of the target material. This provides a mechanism for exposing deep, ancient bedrock.

The enhanced-color cutout shows a great variety of colors and textures in the bedrock, where it is exposed from beneath a dark fine-grained mantle. The mantle is sometimes modified by the wind into dunes.

The bedrock here includes massive, layered, and broken-up (brecciated) areas. This crater is located in the volcanic plains between Argyre Planitia and Valles Marineris.

Written by: Alfred McEwen  (21 December 2011)

This is a stereo pair with ESP_025784_1535.
Acquisition date
19 December 2011

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
255.5 km (158.8 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

Emission angle

Phase angle

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

Solar longitude
45.4°, Northern Spring

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  46.7°
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   (778MB)

IRB color
map-projected   (481MB)

Black and white
map-projected  (410MB)
non-map           (442MB)

IRB color
map projected  (147MB)
non-map           (378MB)

Merged IRB
map projected  (186MB)

Merged RGB
map-projected  (174MB)

RGB color
non map           (368MB)
Map-projected, reduced-resolution
Full resolution JP2 download
Anaglyph 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’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.