Layered Region in Gale Crater
NASA/JPL/University of Arizona
Layered Region in Gale Crater
PSP_003176_1745  Science Theme: Geologic Contacts/Stratigraphy
twitter  •  tumblr

WALLPAPER
800
1024
1152



This observation shows a portion of the Gale Crater floor. Gale Crater is approximately 150 kilometers in diameter, located in Elysium Planitia, sitting near the dichotomy boundary between the Martian southern highlands and northern lowlands.

The subimage shows several light-toned layers (952 x 955; 1 MB). The origin of the sediments composing the layers is unknown and could have included deposition in an ancient flood or lake or the deposition of windblown particles such as dust or volcanic ash. The relatively uniform character of the layers and the manner of erosion suggests that the sediments are fine-grained.

The paucity of impact craters indicates that the layered deposits are either very young or that erosion has removed evidence of past cratering. Wind erosion, in particular, has modified the layers creating relatively sharp edges and rounded depressions. In general, the fact that layers are found on isolated mounds indicates that some process has eroded an originally more extensive, layered deposit. Large dunes are also visible in the lower portion of the subimage.

Written by: Maria Banks  (10 October 2007)

This is a stereo pair with PSP_002464_1745.
 
Acquisition date
31 March 2007

Local Mars time
15:32

Latitude (centered)
-5.525°

Longitude (East)
138.141°

Spacecraft altitude
266.8 km (165.8 miles)

Original image scale range
29.0 cm/pixel (with 1 x 1 binning) so objects ~87 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
23.0°

Phase angle
75.9°

Solar incidence angle
53°, with the Sun about 37° above the horizon

Solar longitude
210.6°, Northern Autumn

For non-map projected images
North azimuth:  96°
Sub-solar azimuth:  353.1°
JPEG
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

JP2
Black and white
map-projected   (1664MB)

IRB color
map-projected   (743MB)

JP2 EXTRAS
Black and white
map-projected  (806MB)
non-map           (808MB)

IRB color
map projected  (331MB)
non-map           (651MB)

Merged IRB
map projected  (372MB)

Merged RGB
map-projected  (381MB)

RGB color
non map           (621MB)
ANAGLYPHS
Map-projected, reduced-resolution
Full resolution JP2 download
Anaglyph details page

ADDITIONAL INFORMATION
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products
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
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.