Layers of Water-Deposited Sediment
Layers of Water-Deposited Sediment
ESP_025665_1825  Science Theme: Aeolian Processes
This image covers part of the floor of a large ancient impact crater, near the western rim.

The cutout shows layered deposits, many with distinct colors (the colors are enhanced). These layers have a morphology similar to that seen elsewhere on Mars in obvious alluvial fans where channels emerge into craters.

In this case the channels are not obvious, but we suspect that it is the same kind of deposit and the ancient channel is not well preserved due to subsequent modification.

Written by: Alfred McEwen  (7 March 2012)

This is a stereo pair with ESP_026166_1825.
Acquisition date
17 January 2012

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
270.4 km (168.1 miles)

Original image scale range
54.0 cm/pixel (with 2 x 2 binning) so objects ~162 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
47°, with the Sun about 43° above the horizon

Solar longitude
58.1°, Northern Spring

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  33.2°
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   (144MB)

IRB color
map-projected   (87MB)

Black and white
map-projected  (69MB)
non-map           (77MB)

IRB color
map projected  (26MB)
non-map           (89MB)

Merged IRB
map projected  (154MB)

Merged RGB
map-projected  (134MB)

RGB color
non map           (75MB)
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/JPL/University of Arizona

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.