SECT. 3] 



TURBIDITY CURRENTS 



757 



Fig. 12. Distribution of sediment cores in the vicinity of the Hudson Submarine Canyon. 

 Contours in fathoms. The top of the cohunn is the approximate location of core 

 stations. A black zone indicates quartz sand and/or silt. A line indicates a thin quartz 

 sand or silt layer, an open zone indicates lutite. The dotted zone in Core A 156-12 

 denotes gravel. Note that Cores A 164-5 and A 164-6, which lie on either side of the 

 Hudson Canyon on the continental rise, are entirely free of sand or silt, whereas most 

 of the cores near the mouth of the canyon contain appreciable percentages of sand or 

 silt. Cores A 164-63, -62 and -69 are associated with Hydrographer Canyon. (After 

 Ericson, Ewing, Wollin and Heezen, 1961.) 



