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

Figure 29.—Northwest Atlantic Mid-Ocean Canyon

Surveyed positions and extensions; generalized bathymetry simplified from Smith, Soule, and Mosby (1937)

Figure 30.—Eight east-west profiles showing Northwest Atlantic Mid-Ocean Canyon

Soundings obtained with NMC sounder run with precision controlled ac power in 1949