Northern Africa-Ancient Desert Rivers                   
Cochise College                                                                                        
Geology Home Page 
Geology Exploration Using Google Earth  
Roger Weller, geology instructor 
(
wellerr@cochise.edu )

last edited:  2/28/17       number of views:  75
 

      In the deserts of northern portion of Africa, almost any land area that is not covered by sand is dominated
by ancient stream channels.  Running water is probably the most powerful element of erosion on our planet. 
Most of these streams and rivers are completely dry now implying that in the past, the climate in this area
was much more humid.
 

     The most common drainage patterns for these ancient rivers are dendritic drainage and meandering patterns.  Missing from the meandering patterns are oxbow lakes and meander scars.  Uplift of the area created entrenched meanders and eroded the oxbow lakes and meander scars.
 

     The drainage patterns, simply as patterns, are quite beautiful.

    

Examples of Desert Rivers
 
     Algeria  (22 views)
     Chad  (9 views)
     Egypt  (9 views)
     Libya  (21 views)
     Mauritania  (7 views)
     Morocco  (9 views)


Just credit photos to Google Earth
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