[meteorite-list] MRO HiRISE Images - April 6, 2011

[Ron Baalke]

MARS RECONNAISSANCE ORBITER HIRISE IMAGES
April 6, 2011

o Dry Ice Gone Wild	
  http://hirise.lpl.arizona.edu/ESP_020914_0930

  On Mars the seasonal polar caps are composed of dry ice. In 
  the springtime as the sun shines on the ice, it turns from 
  solid to gas and causes erosion of the surface.

o Ponded Lava, Slope Streaks, and Inadvertent Change Detection
  http://hirise.lpl.arizona.edu/ESP_020963_1810

  From examining the texture of the surrounding plains and the crater 
  floor, we can conclude that a large lava flow overtopped and cut 
  through a low part of the crater rim.

o Ridged Crater Floor and Gullies	
  http://hirise.lpl.arizona.edu/ESP_021489_1405

  There are gullies on the pole-facing slopes, as well as an 
  impressive ridged floor. Is the ridged floor older than gullies?


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.