Channel into Jezero Crater Delta
NASA/JPL/University of Arizona
Channel into Jezero Crater Delta
PSP_007925_1990  Science Theme: Fluvial Processes
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Billions of years ago, this water-carved channel in Nili Fossae region transported sediments across the Martian surface and deposited them on the floor of an impact crater just south of this image. The sediments were deposited in a delta-like mound on the floor of Jezero Crater, suggesting that the crater may have contained a lake at the time.

This portion of the image shows a section of the channel in greater detail. Wind-blown dunes or ripples now cover much of the channel floor, but in some places the older channel floor is visible. Here, the channel bed has a layered appearance. The plains outside the channel are fractured into polygonal patterns. The CRISM instrument has detected water-bearing clay minerals in these plains, which were eroded by flows down the channel. Clays are also seen in the sediments deposited on the floor of Jezero Crater.

These clues in the form and composition of the Martian surface provide insights into an ancient era when liquid water may have been more common at the surface.

Written by: James Wray   (6 June 2008)

This is a stereo pair with PSP_008650_1990.

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Acquisition date
05 April 2008

Local Mars time:
15:02

Latitude (centered)
18.855°

Longitude (East)
77.519°

Range to target site
282.7 km (176.7 miles)

Original image scale range
28.3 cm/pixel (with 1 x 1 binning) so objects ~85 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
8.1°

Phase angle:
35.1°

Solar incidence angle
43°, with the Sun about 47° above the horizon

Solar longitude
54.4°, Northern Spring

North azimuth:
97°

Sub-solar azimuth:
15.1°
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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.