[meteorite-list] MRO HiRISE Images - March 25, 2011

[Ron Baalke]

MARS RECONNAISSANCE ORBITER HIRISE IMAGES
March 25, 2011

o Light-Toned Layering in Noctis Labyrinthus Pit	
  http://hirise.lpl.arizona.edu/ESP_019377_1695 

  Just like on Earth, rock layers can tell the geologic history of 
  a region: it's a window to the past.

o The Beautiful Arc of a Dune	
  http://hirise.lpl.arizona.edu/ESP_019992_1340

  In the full observation, we can see several dunes within a crater 
  and a gorgeous dune that arcs to the center of the image.

o Spring Drama	
  http://hirise.lpl.arizona.edu/ESP_021522_0930

  This region is also host to surface features with radially-organized 
  channels carved in the surface by seasonal erosion by escaping carbon 
  dioxide gas, known colloquially as "spiders."

o Possible New Gully Activity	
  http://hirise.lpl.arizona.edu/ESP_021622_1095

  The dunes in this image, currently losing their winter coat of carbon 
  dioxide frost, sport possibly active gullies on their southern edge.

o Dunes and Dust Devils	
  http://hirise.lpl.arizona.edu/ESP_021641_1205
 
  In the Southern hemisphere we see fields of sand dunes on the floors 
  of many craters.

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.