PIA00419: Scamander Vallis
Target Name: Mars
Is a satellite of: Sol (our sun)
Mission: Viking
Spacecraft: Viking Orbiter 1
Viking Orbiter 2
Product Size: 318 x 981 pixels (width x height)
Produced By: U.S. Geological Survey
Addition Date: 1998-06-08
Primary Data Set: Viking EDRs
Full-Res TIFF: PIA00419.tif (482.3 kB)
Full-Res JPEG: PIA00419.jpg (38.02 kB)

Click on the image above to download a moderately sized image in JPEG format (possibly reduced in size from original)

Original Caption Released with Image:

A color image of Scamander Vallis on Mars; north toward top. The scene shows heavily cratered highlands dissected by the slightly sinuous gully of Scamander Vallis. The channel begins by dissecting a steep slope of an impact crater wall and abruptly ends about 180 km north of the crater.

This image is a composite of Viking medium-resolution images in black and white and low-resolution images in color. The image extends from latitude 13 degrees N. to 19 degrees N. and from longitude 330 degrees to 332 degrees; Mercator projection.

The lack of tributaries, fairly straight path, and steep walls of the channel suggest spring sapping as a mode of origin. The abrupt termination may have resulted from burial by younger deposits or perhaps the flows percolated into the surface materials and continued underground.

Image Credit:
NASA/JPL/USGS

Image Addition Date:
1998-06-08