PIA00413: Fine Channel Networks
Target Name: Mars
Is a satellite of: Sol (our sun)
Mission: Viking
Spacecraft: Viking Orbiter 1
Viking Orbiter 2
Product Size: 1264 x 632 pixels (width x height)
Produced By: U.S. Geological Survey
Addition Date: 1998-06-08
Primary Data Set: Viking EDRs
Full-Res TIFF: PIA00413.tif (1.496 MB)
Full-Res JPEG: PIA00413.jpg (101.1 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 fine channel networks on Mars; north toward top. The scene shows heavily cratered highlands dissected by dendritic open channel networks that dissect steep slopes of impact crater walls.

This image is a composite of Viking high-resolution images in black and white and low-resolution images in color. The image extends from latitude 9 degrees S. to 5 degrees S. and from longitude 312 degrees to 320 degrees; Mercator projection.

The dendritic pattern of the fine channels and their location on steep slopes leads to the interpretation that these are runoff channels. The restriction of these types of channels to ancient highland rocks suggests that these channels are old and date from a time on Mars when conditions existed for precipitation to actively erode rocks. After the channels reach a low plain, they appear to end. 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