[meteorite-list] MRO HiRISE Images - June 22, 2011

[Ron Baalke]

MARS RECONNAISSANCE ORBITER HIRISE IMAGES
June 22, 2011

o Polar Pit Gullies	
  http://hirise.lpl.arizona.edu/ESP_022156_1115

  One goal of HiRISE is to repeat observations at locations such 
  as this to detect changes that may lead to understanding how 
  these gullies form.

o Colorful Gullies in an Unnamed Crater Southeast of Uzboi Valles	
  http://hirise.lpl.arizona.edu/ESP_022262_1475

  The color version of this observation reveals a variety of 
  interesting geological features.

o Opal Deposits near the Valles Marineris	
  http://hirise.lpl.arizona.edu/ESP_022620_1690

  The silica in this observation appears to lack a clear crystal 
  structure and is thought to be made up of amorphous opal, which 
  can contain up to 20 percent water.

o Inverted Valleys near Juventae Chasma	
  http://hirise.lpl.arizona.edu/dtm/dtm.php?ID=PSP_007627_1765

  Erosion, probably by wind, stripped away the valley walls and 
  the former flow paths are preferentially preserved as ridges.
	
All of the HiRISE images are archived here:

http://hirise.lpl.arizona.edu/

Information about the Mars Reconnaissance Orbiter is 
online at http://www.nasa.gov/mro. The mission is 
managed by NASA's Jet Propulsion Laboratory, a division 
of the California Institute of Technology, for the NASA 
Science Mission Directorate, Washington, D.C. Lockheed 
Martin Space Systems, of Denver, is the prime contractor 
and built the spacecraft. HiRISE is operated by the 
University of Arizona. Ball Aerospace and Technologies 
Corp., of Boulder, Colo., built the HiRISE instrument.