Layers in Gale Crater
Layers in Gale Crater
PSP_001897_1745  Science Theme: Aeolian Processes
This HiRISE image covers a portion of the layered deposits in Gale crater, but is located to the southeast of the main stack of the deposits and is perhaps revealing a lower part of the section.

The deposits are remarkably uniform at submeter scales and are not comprised of loose sediment, as evidenced by numerous fractures and scarps that run through and along some layers.

Though there are a few impact craters preserved, wind erosion has stripped and etched the surface of the layers, producing few large blocks and little in the way of talus or other debris.

The deposit's uniform character—and the manner of erosion—suggests it is comprised of fine-grained sediments, perhaps an accumulation of dust or volcanic ash blown in by the wind.

Written by: John Grant  (10 October 2007)
Acquisition date
22 December 2006

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
267.0 km (165.9 miles)

Original image scale range
26.7 cm/pixel (with 1 x 1 binning) so objects ~80 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
57°, with the Sun about 33° above the horizon

Solar longitude
154.3°, Northern Summer

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  22.7°
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   (1068MB)

IRB color
map-projected   (568MB)

Black and white
map-projected  (483MB)
non-map           (638MB)

IRB color
map projected  (195MB)
non-map           (479MB)

Merged IRB
map projected  (267MB)

Merged RGB
map-projected  (271MB)

RGB color
non map           (447MB)
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.