DISTRIBUTION OF VOLCANOES 



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the continents, or else they form islands in the deep sea. 

 Soundings show that there are many peaks in the sea which 

 have not reached the surface ; these are probably volcanic. 

 Few volcanoes are far from the sea, although there is an 



MOUNT LASSEN IN ERUPTION 



This volcano, after being dormant for centuries, suddenly renewed its 

 activity in 1914. 



active crater in Africa several hundred miles from the 

 Indian Ocean. 



About 800 miles west of Portugal rises from the depths of 

 the Atlantic a group of nine islands, the Azores. .They 



