PHYSICAL GEOGRAPHY 



217 



abrasion, the countries were separated and have never since been 

 connected with each other. But Iceland was then, after the separation, 

 considerably larger than it is now, the land extending 50 100 km. 



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further out on all sides. The subsidence continued gradually, but 

 perhaps with less intensity than before, through Pliocene times, and 

 the submarine coastal platform, which occurs around the whole island 

 and is limited by the 100 fathom line, was simultaneously formed 

 by denudation; the abrasive action ended in the Red-Crag time. 



