PIA00151: Memnonia Fossae (Enhanced Color)

Target Name: Mars Is a satellite of: Sol (our sun) Mission: Viking Spacecraft: Viking Orbiter 2 Instrument: Visual Imaging Subsystem - Camera B Product Size: 1040 samples x 934 lines Produced By: U.S. Geological Survey Addition Date: 1998-06-04 Primary Data Set: Viking EDRs Full-Res TIFF: PIA00151.tif (3.299 MB) Full-Res JPEG: PIA00151.jpg (186 kB)

Original Caption Released with Image: Tharsis-centered volcanic and tectonic activity resulted in the formation of radial grabens of Memnonia Fossae, which cut materials of the ancient cratered highlands and the relatively young, highland-embaying lava flows from the Tharsis volcanoes. Center of picture is at latitude 16 degrees S., longitude 142 degrees W. The enhanced color version (following decorrelation stretch) reveals a diversity of subtle color variations; many of the color variations may be due to different lava flow units and variable amounts of weathering, possible alteration by water, and eolian redistributions. Viking Orbiter Picture Numbers 41B52 (green) 41B54 (red), and 41B56 (blue) at 198 m/pixel resolution. Picture width is 206 km. North is 119 degrees counter-clockwise from top. Image Credit: NASA/JPL/USGS