meter data. These data also indicated currents to be greatest at 

 the new and full moon periods, especially during the tidal ebb. 



Sediment samples from Santa Cruz, San Nicolas, and Tanner Basins 

 were dominantly fine-grained, green-gray muds with rather high organic 

 content. Sediments from the Santa Barbara Island slope were greenish 

 sandy muds. They represented a mixture of inorganic shelf sands 

 and silts with coarser shelf fragments and small pelagic carbonate 

 tests. The coarsest sediments obtained were from the San Clemente 

 Ridge and the Santa Rosa-Cortes Ridge. These sediments may be classified 

 texturally as sandy or gravelly muds and muddy sands. 



From one plankton collection in September and 13 in October, 

 a study of the abundance of various plankters suggested that the 

 autumnal decline occurred between 23 October September and the second 

 week of October. 



47 



