Abstract
A SeaMARC I side-scan sonar survey on the central Scotian Slope shows a blocky debris flow with high surface roughness between the 1,000 and 2,000 m isobaths, covering an area of about 1,000 km2. The flow is at least 20 m thick, occuring as lenses within channels and as sheets on intervalley areas. The surface reflectivity is variable, with blocks and depressions 50 to 200 m wide and relief of 5 to 20 m. The source zone lies within two canyons on the upper slope and has relatively smooth surface reflectivity, in contrast to the gullied slope to either side.
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Shor, A.N., Piper, D.J.W. A large late pleistocene blocky debris flow on the central scotian slope. Geo-Marine Letters 9, 153–160 (1989). https://doi.org/10.1007/BF02431042
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DOI: https://doi.org/10.1007/BF02431042