440 



LAUOHTOX 



[chap. 18 





Fig. 2. 41° 12'N, 15° 14'W. Depth 2939 m. Seamount west of Iberia plain. Area of picture 

 U by 1 m. (Photo by N.I.O.) 



A view into the face of a rock cHff. The bulbous appearance of the rock suggests 

 either a water-cooled lava or a manganese crust. Many 10-armed commatulid crinoids 

 can be seen, often attached to broken and manganese-covered coral fragments. An 

 ophiuroid is visible in the top left corner. 



Fig. 3. 35° 12'N, 15° 18'W. Depth 1317 m. Seamount northeast of Madeira. Area of 

 picture 2 by 10 m. (Photo by L.CJ.O.) 



Field of submarine pillow lavas with manganese-coated surface. Note the rounded- 

 ness of the rocks and the lack of sediment cover on top indicating active currents. 



