Craters and Valleys in the Elysium Fossae
NASA/JPL/University of Arizona
Craters and Valleys in the Elysium Fossae
PSP_004046_2080  Science Theme: Hydrothermal Processes
Spanish 
This HiRISE image covers a small portion of the Elysium Fossae fracture system extending to the northeast from the giant Elysium Mons volcano.

The relative roles of tectonics (motion along faults), volcanism, and water remain puzzling. The large crater just north of the center of the HiRISE image appears to have formed by collapse, not by a meteorite impact. Had it been an impact crater, we would see a blanket of material (ejecta) that had been thrown out of the crater.

In general, this image demonstrates that this area has a similar stack of materials as other parts of the giant volcanoes on Mars. The deepest exposed material appears to be a stack of lava flows that produce thick layers that shed boulders. Above is a layer of weak material, possibly wind blown dust. Interestingly, in some areas (especially in the northern part of this image) there are thin, harder layers, more resistant to erosion, within the generally weak and easily eroded surface layer. These resistant layers seem to be too thin to be lava flows, and may indicate that some other process has hardened or cemented (indurated) portions of the weak material.

Written by: Laszlo Kestay   (27 June 2007)

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
 
Acquisition date
07 June 2007

Local Mars time:
14:59

Latitude (centered)
27.490°

Longitude (East)
143.206°

Range to target site
289.6 km (181.0 miles)

Original image scale range
29.0 cm/pixel (with 1 x 1 binning) so objects ~87 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
9.3°

Phase angle:
74.9°

Solar incidence angle
67°, with the Sun about 23° above the horizon

Solar longitude
253.1°, Northern Autumn

North azimuth:
97°

Sub-solar azimuth:
319.9°
JPEG
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

JP2
Black and white
map-projected   (957MB)

IRB color
map-projected   (405MB)

JP2 EXTRAS
Black and white
map-projected  (475MB)
non-map           (461MB)

IRB color
map projected  (152MB)
non-map           (349MB)

Merged IRB
map projected  (233MB)

Merged RGB
map-projected  (225MB)

RGB color
non map           (341MB)
ADDITIONAL INFORMATION
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products
HiView

NB
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

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:
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.