|Estimation of relative grain-size from sediment clouds|
Athearn, W.D. (1967). Estimation of relative grain-size from sediment clouds, in: Hersey, J.B. (Ed.) Deep-sea photography. pp. 173-176
In: Hersey, J.B. (Ed.) (1967). Deep-sea photography. The John Hopkins Oceanographic Studies, 3. The John Hopkins Press: Baltimore. 310 pp., more
In: The John Hopkins Oceanographic Studies. ISSN 0271-2229, more
The sediment cloud raised by the tripping weight of an underwater camera may be used in estimating the grain size of bottom sediments. This is shown in studies of two areas from which sediment samples were taken simultaneously with bottom photographs. The first survey area was in Cape Cod Bay, Massachusetts, a region of glacially derived quartz and feldspar sediments, and the second was the Tongue of the Ocean, Bahamas, a region of primarily detrital carbonate sediments. The observations show that within a given geographical area it is possible to distinguish finer from coarser sediments on the basis of relative sediment-cloud densities, but that it is not practical to compare clouds frorn widely separated areas, because of differences in corn position, color, shape, and cohesiveness of the minerals comprising the sediments.