58 



ALLAN HANCOCK PACIFIC EXPEDITIONS 



VOL. 27 



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% ORGANIC CARBON (direct) 



Fig. 21 — Results of separate determinations for organic car- 

 bon on sub-samples, based on (1) analysis for carbon 

 in residue from carbonate analysis, and (2) on analysis 

 for total carbon minus carbonate carbon. 



generally intermediate characteristics of the sediments in canyons with 

 respect to sediments of shelves and basins are reasonable in view of other 

 lines of evidence which indicate that the canyons serve as the routes 

 through which at least the coarser sediments reach the basins for per- 

 manent deposition. However, the averages of Table 3 do not reveal 

 whether the movement through the canyons is chiefly by rapid turbidity 

 currents or by slow creep. 



