Gullies with Meanders (Corozal Crater)
NASA/JPL/University of Arizona

Gullies with Meanders (Corozal Crater)
PSP_006261_1410  Science Theme: Fluvial Processes



WALLPAPER

800  1024  
1152  1280  
1600  
1920  2048  
This observation features a relatively pristine crater in the southern mid-latitudes. The crater still has a sharp rim on its south end, but it has experienced modification since forming.

The north half of the crater is populated by a large number of gullies that appear to emanate from resistant layers. The layers likely continue around the crater, but the gullies do not. Distinct layers are visible on the south wall of the crater. It is unknown why gullies form on certain slopes and not others. Interestingly, the gullies themselves are not so pristine. They are covered by dunes and cut by polygonal fractures, indicating that they have been modified by aeolian (wind-driven) and periglacial (ground ice) processes, respectively.

There are a large number of boulder tracks visible on the crater walls. Boulder tracks typically are approximately constant in width, and can often be seen at the track ends. The crater floor has a texture indicative of sublimation processes. (Sublimation is when something goes directly from a solid to a gas phase, skipping a liquid phase.) If a soil is ice-rich under Martian conditions, the ice can sublimate causing the ground to collapse and “crinkle” where the ice used to be.

Written by: Kelly Kolb   (11 January 2008)

This is a stereo pair with ESP_014093_1410.

  Click to share this post on Twitter Click to share this post on Facebook Click to share this post on Google+ Click to share this post on Tumblr


 Image Products: All image links are drag & drop for HiView, or click to download
JPEG
Grayscale: map projected  non-map
IRB color: map projected  non-map
Merged IRB: map projected
Merged RGB: map projected
RGB color: non-map projected

JP2 DOWNLOAD
Grayscale: map-projected (786.4 MB)
IRB color: map-projected (361.2 MB)

JP2 EXTRAS
Grayscale: map-projected  (365.0 MB),
non-map  (460.4 MB)
IRB color: map projected  (135.4 MB)
non-map  (351.5 MB)
Merged IRB: map projected  (186.5 MB)
Merged RGB: map-projected  (190.1 MB)
RGB color: non map-projected  (345.9 MB)

ANAGLYPHS
Map-projected reduced-resolution (PNG)
Full resolution JP2 download
View anaglyph details page

DIGITAL TERRAIN MODEL (DTM)
DTM details page

ADDITIONAL IMAGE INFORMATION
Grayscale label   Color label
Merged IRB label   Merged RGB label
EDR products

About color products (PDF)
HiView main page

 Observation Toolbox
Acquisition date:27 November 2007 Local Mars time: 2:27 PM
Latitude (centered):-38.793° Longitude (East):159.482°
Range to target site:254.4 km (159.0 miles)Original image scale range:25.4 cm/pixel (with 1 x 1 binning) so objects ~76 cm across are resolved
Map projected scale:25 cm/pixel and North is upMap projection:Equirectangular
Emission angle:0.3° Phase angle:49.6°
Solar incidence angle:49°, with the Sun about 41° above the horizon Solar longitude:353.8°, Northern Winter
For non-map projected products:
North azimuth:97° Sub-solar azimuth:42.9°
For map-projected products
North azimuth:270°Sub solar azimuth:216.3°

Context map

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: Image: NASA/JPL/University of Arizona
Postscript
For information about NASA and agency programs on the Web, visit: http://www.nasa.gov. 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. Lockheed Martin Space Systems is the prime contractor for the project and built the spacecraft. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. The image data were processed using the U.S. Geological Survey’s ISIS3 software.