Wrinkle Ridges and Pit Craters
Wrinkle Ridges and Pit Craters
ESP_046817_1775  Science Theme: Tectonic Processes
Tectonic stresses highly modified this area of Ganges Catena, north of Valles Marineris. The long, skinny ridges (called “wrinkle ridges”) are evidence of compressional stresses in Mars’ crust that created a crack (fault) where one side was pushed on top of the other side, also known as a thrust fault.

As shown by cross-cutting relationships, however, extensional stresses have more recently pulled the crust of Mars apart in this region. (HiRISE imaged this area in 2-by-2 binning mode, so a pixel represents a 50 x 50 square centimeter.)

Written by: Kirby Runyon (audio: Tre Gibbs)  (19 October 2016)

This is a stereo pair with ESP_050865_1775.
Acquisition date
22 July 2016

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
262.0 km (162.8 miles)

Original image scale range
52.7 cm/pixel (with 2 x 2 binning) so objects ~158 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
51°, with the Sun about 39° above the horizon

Solar longitude
190.2°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  2.8°
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   (207MB)

IRB color
map-projected   (118MB)

Black and white
map-projected  (109MB)
non-map           (114MB)

IRB color
map projected  (48MB)
non-map           (131MB)

Merged IRB
map projected  (218MB)

Merged RGB
map-projected  (199MB)

RGB color
non map           (121MB)
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.