The Floors of the Ocean: 1. The North Atlantic / Text to accompany the physiographic diagram of the North Atlantic - Bruce C. Heezen; W. Maurice Ewing; Marie Tharp

Figure 1. Small-Scale Roughness, Upper Continental Rise
Figure 2. Rolling Topography, Upper Continental Rise
Figure 3. Cape Verde Abyssal Plain
Figure 4. Abyssal Hills

PDR RECORD OF ABYSSAL HILLS, SOUTHEAST OF BERMUDA RISE

Note sub-bottom echos from beneath intermontane basin floor. Depth in fathoms.

Area of each photograph is about 6 by 8 feet.

Plate 11.—OCEAN-BOTTOM PHOTOGRAPHS ON THE CONTINENTAL MARGIN AND OCEAN-BASIN FLOOR

Figure 1. (Station T1-3, photo 27) Depth 260 fathoms, location 47° 42´N., 07° 34´W., just below shelf break west of St. Nazaire, France. Note small ripples which appear to be superimposed on larger ripples.