Fii 



28. 41° 12'N, 15° 14'W. Depth 3127 m. Seamount west of Iberia plain. Area of 

 picture 1| by 2^ m. (Photo by N.I.O.) 



Calcareous sands with pronounced symmetrical ripple marks (wave-length 20 cm). 

 Note the scour pits at the side of the half-buried boulders and the deposited sand drifts 

 to the right of them, suggesting a predominant current from left to right. 



Fig. 29. 35° 12'N, 15° 18'\V. Depth 1302 m. Seamount northeast of Madeira. Area of 

 picture l.l by 2| m. (Photo by L.G.O.) 



Asymmetrical ripple marks with coarse material to the right (lee side) of ridges. 

 Note the scour ]iits in front of and the deposited sand drifts l)ehind the boulders, 

 indicating predominant current from left to riglit. 



