"Antidune wavecrests preserved in mud by contemporaneous currents carrying silt are discussed with reference to some recent criticism. In turbidity currents, at slow rates of directional flow, turbulent eddies may be operative in keeping sediment in suspension. Torose structures and flow marks from the Gala-Tarannon of southern Scotland are compared with structures probably eroded by turbulent currents in the Gronigel Flysch of the Pre-Alps."

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