Mars - Polygonal Ridges                               
Cochise College   

Mars Landforms
Mars Explored
Geology Home Page  

Roger Weller, geology instructor (  )
Last edited:  10/11/17     edited by R.Weller
number of views: 4

     The origin of these ridges started with a cracked layer of material.  The
cracks were then filled with an erosion-resistant substance.   Later, wind
erosion removed the less-consolidated material, exposing the ridges.

photo sources:   NASA, USGS,
ESA/DLR/FU Berlin (G. Neukum) 
Google Earth- Mars option
photos of polygonal ridges
examples:  1  2