280 



Sediments 



Z300 



Figure 224. Concentration of pheophytin and other sediment parameters in core from Santa Barbara Basin. The gray 

 muds are shghtly coarser than the more typical green muds and are considered to be turbidity current deposits. Note 

 the close dependence of pheophytin on grain size and its general decrease with depth. Eh is negative throughout the 

 core. From Orr, Emery, and Grady (1958, Fig. 9). 



<500 M. 



500- 1000 

 000-2000 



A 2000-4000 



■ >4000 



PPM PHEOPHYTIN 



Figure 225. Plot of pheophytin versus nitrogen concentrations in surface sediments with points for different ranges of 

 water depth indicated by different symbols. Note the close grouping of the symbols between depth lines. From Orr, 

 Emery, and Grady (1958, Fig. 7). 



