Type:

Other

Description:

3 May 2004 Martian middle- and polar-latitude gullies are not the only places that 'alcoves' form by downslope erosion of debris. Even at equatorial latitudes, some craters exhibit these features. Alcoves at the heads of narrow, dry landslide scars are indicated in this Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image of a crater wall in Xanthe Terra. In both the middle/polar-latitude gully cases and in this example, alcoves form by undermining and collapse of material high on a relatively steep slope such as a crater wall. In this case, however, no fluid was involved, thus no gully or distinct apron formed. This crater wall is located near Shalbatana Vallis around 2.7N, 43.1W. The image is illuminated from the left; the 400 meter scale bar is about 437 yards long. For comparison, an example of martian gullies with alcoves, channels, and aprons can be seen in: Evidence for Recent Liquid Water on Mars: Basic Features of Martian Gullies, 22 June 2000; see

Subjects:

    Education Levels:

      Keywords:

      EUN,LOM,LRE4,hdl:10494/254002,work-cmr-id:254002,http://photojournal.jpl.nasa.gov:http://photojournal.jpl.nasa.gov/catalog/PIA05858,ilox,learning resource exchange,LRE metadata application profile,LRE

      Language:

      Access Privileges:

      Public - Available to anyone

      License Deed:

      Creative Commons Attribution 3.0

      Collections:

      None
      This resource has not yet been aligned.
      Curriki Rating
      'NR' - This resource has not been rated
      NR
      'NR' - This resource has not been rated

      This resource has not yet been reviewed.

      Not Rated Yet.

      Non-profit Tax ID # 203478467