Sources of Gullies in Hale Crater
NASA/JPL/University of Arizona
Sources of Gullies in Hale Crater
PSP_005688_1450  Science Theme: Fluvial Processes


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HiRISE color can show mineralogical differences due to the near-infrared filter. The sources of channels on the north rim of Hale Crater show fresh blue, green, purple and light toned exposures under the the overlying reddish dust.

The causes and timing of activity in channels and gullies on Mars remains an active area of research. Geologists infer the timing of different events based on what are called “superposition relationships” between different landforms. Areas like this are a puzzle!

Written by: Sarah Mattson  (12 April 2017)
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Acquisition date
13 October 2007

Local Mars time:
14:19

Latitude (centered)
-34.570°

Longitude (East)
323.120°

Range to target site
252.4 km (157.7 miles)

Original image scale range
25.2 cm/pixel (with 1 x 1 binning) so objects ~76 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
1.7°

Phase angle:
40.2°

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

Solar longitude
330.1°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  32.5°
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HiView

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IRB: infrared-red-blue
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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/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.