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Fig. 9. 41° 20'N, 14° 29'W. Depth 5029 m. Swallow Bank on Iberia abyssal plain. Area of 

 picture 3 by 4 m. (Photo by N.I.O.) 



Small cobbles and pebbles of volcanic basalt near the top of a long, narrow ridge 

 rising 400 m above the level of the plain. The absence of sediment cover suggests 

 either recent volcanic activity or bottom cvu-rents. 



Fig. 10. 46° 34'N, 27° 14'W. Depth 1480 m. Near the top of a peak on the Mid-Atlantic 

 Ridge. Area of picture 3 by 4J m. (Photo by N.I.O.) 



Broken rocks and boulders partially covered by a dark manganese coating, lying 

 on a steep slope. White patches on boulders probably result from lack of manganese 

 on what was the basal face before a recent disturbance. The complete absence of fine 

 sediment and the angularity of the boulders also point to a recent disturbance, either 

 by earthquake or volcano. 



