Well-sorted sand in deep water2 has now been discovered in so many places that it can not be attributed to chance introduction. The nature of sand layers in between tvpical deep wlter deposits suggests rapid emplacement by some type of flow, presumably turbidity currents The sand appears to be carried seaward along the axes of submarine canyons, the currents being generated by landslides at the heads of the submarine canyons. No evidence has been found to indicate that these flows are capable of cutting the rock gorges of the canyons. To date artificial production of slides has been unsuccessful
Figures & Tables
By 1951, recent studies of the sea floor were forcing drastic revisions of many of our basic geological concepts. The concept of vertical stability of the ocean basins was being challenged by the discovery of “guyots”; sea-mounts whose flat tops, now several thousand feet beneath the sea surface, give evidence of wave truncation. The belief that the deep ocean floor was essentially a flat, featureless plain was completely discredited by the discovery of fault scarps and mountain ranges comparable in size and complexity to any of those existing on the continents. One of the most challenging of recent discoveries is the finding of relatively coarse sediments (coarse silt and sand) in deep basins and on the open ocean floor at depths of several thousand feet and many miles from land. Solution of this problem was particularly difficult because the mere occurrence of these coarse sediments violates some of the traditional opinions of the day about processes operating in the oceans. This volume contains some of the first and best documented research in this area that opened a whole new way to interpret deep water deposition.