. The Earth beneath the sea : History . .;^yJW\;^^y^Mi-^WJV- EH7 EH8 '^3000 100 50 100 200 300 400 DISTANCE IN NAUTICAL MILES 500 600 Fig. 20. Profiles of abyssal plains and abyssal hills in the eastern North Atlantic. Profiles are indexed in Fig. 18. (After Heezen et al., 1959.) spread in the Atlantic but relatively rare in the Pacific, because turbidity currents cannot flow past island arcs and trenches. (3) The small-scale relief of plains and their approaches can be explained only by the action of bottom- moving turbidity currents (Heezen et al., 1954; Menard, 1955). Submarine

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Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectoceanbottom