The Ocean 



17 



Fig. 10. Schematic representation of the Earth's crust by a continental block and a deep sea. 



Table 4. Area, volume and mean depth of oceans and seas 

 (For Atlantic Ocean according to Stocks 1938, otherwise according to Kossinna 1921) 



t Puerto Rico trough north of Puerto Rico. 

 % Java trench, south of Java. 



§ Philippines trench north-east of Mindanao ("Emden" depth). 



li Mariana trench, about 11 ° N., 143° E. Gr. greatest depth 10,363 m (according to Cabruthers 

 and Sawfori, 1952). 



