The Floors of the Ocean: 1. The North Atlantic / Text to accompany the physiographic diagram of the North Atlantic

by Bruce C. Heezen; W. Maurice Ewing; Marie Tharp

Depth in fathoms.

PDR RECORD, BERMUDA SCARP ZONE

Depth in fathoms.

• Figure 1. High Fractured Plateau
• Figure 2. Upper Step

PDR RECORDS MID-ATLANTIC RIDGE

Depth in fathoms.

Area of each photograph is about 6 by 8 feet.