THE KARROO SYSTEM 



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PLATE XIII. Dwyka tillite with a band of boulders, Witteberg's Rive;, 

 Laingsburg. The largest boulder, near the base of the cliffs, is 10 feet in 

 diameter. The almost horizontal lines are joints ; the inclined plane j 

 dipping south, from left to right, are due to cleavage. 



