468 



E. B. Bailey — Iceland, a Stepping -Stone, 



2. Thoroddskn on Icelandic Fractures and Volcanoes. 



Geologically, Iceland is divisible into two, au Old and a New. 

 The Old is not continuous, but is separated by the New into an 

 eastern and a western province. In Old Iceland basaltic lavas of 

 early Tertiary date, comparable with those of Antrim and the 



Hebrides, are everywhere exposed to view. In New Iceland these 

 ancient lavas are concealed by widespread volcanic accumulations 

 reaching down, in point of time, to our own day. The difference 

 finds expression in many other ways than in the nature and age of 

 the prevailing surface rock. As a volcanic district New Iceland is 

 active, whereas Old Iceland is extinct. 



