Wrinkle Ridge in Hesperia Planum
Wrinkle Ridge in Hesperia Planum
PSP_003388_1590  Science Theme: Tectonic Processes
This image shows a prominent "wrinkle" ridge in Hesperia Planum, northwest of the Hellas basin and adjacent to Tyrrhena Patera.

Wrinkle ridges are linear to arcuate positive relief features with a broad arch topped by a crenulated ridge. These features have been identified on many planets such as the Moon, Mars, Mercury, and Venus. On Mars, they are many tens to hundreds of kilometers long, tens of kilometers wide, and up to several hundred meters high. Wrinkle ridges are believed to have formed by horizontal compression or shortening of the crust from faulting.

Locations of wrinkle ridges and faulted surfaces on Mars may be possible sites for paleo-spring formation where fluid along these faults may have leaked out. The area alongside such faults on Earth have a "bleached" appearance where salts have precipitated onto the surface as the water-soaked surface dried out over time. Such examples of fault-related fluid flow have been found in places on Earth, and possibly on Mars (see "Fracture-Controlled Paleo-Fluid Flow in Candor Chasma, Mars", Science, v. 315, 2007).

Written by: Maria Banks  (5 July 2007)

This is a stereo pair with PSP_003665_1590.
Acquisition date
17 April 2007

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
256.0 km (159.1 miles)

Original image scale range
25.8 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
51°, with the Sun about 39° above the horizon

Solar longitude
220.8°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  0.5°
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non-map           (551MB)

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non-map           (425MB)

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RGB color
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Full resolution JP2 download
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Black & white is 5 km across; enhanced color about 1 km
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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.