Abstract
Graded sand-to-mud beds are a common shelf facies in the rock record. Similar beds were studied in nine cores from the sandmud transition at the edge of Emerald Basin to determine their frequency and mode of origin. Graded sand-to-mud beds 5 to 20 cm thick can be correlated between cores and thicken basinwards, with average sand content decreasing from 60% to 5% over 7 km. European weed pollen distribution indicates only the top bed is less than 200 years old. The graded beds were deposited from suspension during storms with a several hundred year recurrence interval.
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Kontopoulos, N., Piper, D.J.W. Storm graded sand at 200 m water depth, Scotian Shelf, Eastern Canada. Geo-Marine Letters 2, 77–81 (1982). https://doi.org/10.1007/BF02462804
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DOI: https://doi.org/10.1007/BF02462804