MARINE DEPOSITS 



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MARINE DEPOSITS. 



Littoral Deposits, 



between high & 

 low water marks 



Shallow- Water De- 

 posits, betweon 

 low - water mark 

 and 100 fathoms 



Deep-Sea Deposits^ 

 beyond 100 

 fathoms 



Boulders, shingle, ' 

 gravels, sands, 

 muds, etc., de- 

 rived from adja- 

 cent land 



Sands, gravels, 

 muds, marls, de- 

 rived from adja- 

 cent land, shores 

 and shallow 

 waters 



( Blue Mud 

 Red Mud 

 Green Mud 

 Volcanic Mud 

 Coral Mud 



Globigerina Ooze' 

 Pteropod Ooze 

 Diatom Ooze 

 Red Clay 

 VRadiolarian Ooze 



Terrigenous Ds= 



posits formed in 

 deep and shal- 

 low water close 

 to land masses 



Pelagic Deposits, 



formed in deep 

 water far re- 

 moved from 

 land 



line cover about ten millions of square miles. 

 Near shore these deposits consist of boulders, 

 shingle, gravel, sands, with muds occasionally 

 in sheltered positions ; farther from shore 

 they consist of gravels, sands, beds of living 

 and dead shells, with muds in estuaries and 

 depressions. The nature and composition of 

 these shore and shallow-water deposits are 

 largely determined by the structure and com- 

 position of the adjoining land-masses and 



