CONTRAPOSED SHORELINES 539 
drift has been completely retrograded and the result is a very young, 
contraposed shoreline. Hardly any of the initial irregularities have 
been destroyed. On the contrary in the sheared zones, dikes, and 
interbedded softer rocks small coves and wave-chasms have been 
cut. The hard rocks themselves have not been beached, but since 
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the retrograded drift deposits frequently occur between headlands 
of hard rock, there are narrow beaches composed of their material 
in the protected places of the headlands. 
It has been objected to the term contraposed, that it could not 
be applied on a large scale, that is, that contraposed shorelines 
would always be very limited in extent. This is more or less true; 
although one can imagine an extensive contraposed shoreline formed 
by the retrogression of an extensive coastal plain deposit back to the 
