Rocks Rolling
NASA/JPL/University of Arizona
Rocks Rolling
PSP_007547_1895  Science Theme: Fluvial Processes


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This image covers where the southern branch of Shalbatana Vallis opens into Chryse Planitia, showing a variety of boulders that have moved down slope leaving tracks on the surface. These boulders may have been thrown out from low-energy secondary craters, or simply eroded out of the above rocky cliff.

In the subimage, the left frame shows boulders moving in two directions, indicating that they had different sources. The right frame shows a boulder about 4 meters in diameter in the bottom left, having left a track that begins in the upper right. This boulder rolled down the hill, appears to have jumped the crater, bounced a few times, and then rolled to a halt.

Written by: Ross A. Beyer  (2 April 2008)

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Acquisition date
06 March 2008

Local Mars time:

Latitude (centered)

Longitude (East)

Range to target site
278.1 km (173.8 miles)

Original image scale range
55.6 cm/pixel (with 2 x 2 binning) so objects ~167 cm across are resolved

Map projected scale
50 cm/pixel and North is up

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Emission angle:

Phase angle:

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

Solar longitude
41.3°, Northern Spring

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