EMBAYED SHORELINES 



497 



chilled in the epochs of continental glaciation^ nearly all coral reefs were 

 killed and cut away by the sea to platforms of nearly "aniform depth, and 

 til at at the same time the valleys of reef -encircled oceanic islands, which 



:h4B^l:- RAIATEA 



PuHaei'oa, Ptt«» 





Ch.2025 

 U.S.H.O. 



Figure 3. — Original Shoreline of Raiatea, Society Islands 

 The original shoreline is indicated back of the alluvial flats 



are supposed under this theory to have stood still for a long period of 

 time, were deepened by stream erosion, so that when the ocean rose to its 

 normal level the deepened valleys were embayed ; but a further consequence 



