Quart. Journ. Geol. Soc. Vol. LXIII, PI. X. 







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Photo by the late Col. F. W. Rhodes. 



Rift, about 80 feet deep, in Cataract Island, Victoria Falls, excavated along a vertical 

 joint or small fault in the Batoka Basalts by an overflow streamlet. The 'Leaping 

 "Water,' in the distance . 



The joint-plane showed traces of slickensides. 



