Figure 8. Sections of an atoll for comparison of the subsidence theory 

 with the submarine bank theory of origin. 1, section according to the 

 subsidence theory. 2, section according to the submarine bank theory. 

 (cJ.) Cross hatching represents fragments of broken coral which have 

 rolled down the slope and accumulated as the atoll grew. 



close enough to the surface for corals to begin their 

 growth but they would become shallower as the result 

 of an accumulation of fine limicstone silt formed by the 

 skeletons of foraminifera and other microscopic ani- 



3i 



