PIA07376: Inverted Channel
NASA's Mars Global Surveyor shows an inverted channel running down, through a valley in the Memnonia Sulci region of Mars. The original channel is gone, as are the rocks through which it cut.
 Target Name:  Mars
 Is a satellite of:  Sol (our sun)
 Mission:  Mars Global Surveyor (MGS) 
 Spacecraft:  Mars Global Surveyor Orbiter
 Instrument:  Mars Orbiter Camera (MOC) 
 Product Size:  672 x 2455 pixels (w x h) 
 Produced By:  Malin Space Science Systems 
 Producer ID:  MOC2-1008  
 Full-Res TIFF:  PIA07376.tif (1.652 MB)
 Full-Res JPEG:  PIA07376.jpg (301.8 kB)  

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Original Caption Released with Image:

This Mars Global Surveyor (MGS) Orbiter Camera (MOC) image shows an inverted channel running down, through a valley in the Memnonia Sulci region of Mars. The original channel is gone, as are the rocks through which it cut. The channel floor and/or the material that filled the channel was more resistant to erosion, and thus left standing high as a ridge. Inverted channels and valleys are common on Mars. Many old valley networks have been filled, buried, and in some cases, exhumed and inverted, all across the planet.

Location near: 11.4°S, 174.4°W
Image width: ~3.0 km (~1.9 mi)
Illumination from: upper left
Season: Southern Winter

Image Credit:
NASA/JPL/Malin Space Science Systems

Image Addition Date:
2005-02-20