Abstract

In the Ontario basin, Canada, last interglacial, glacial, and postglacial lacustrine sands, deposited at times of high lake level, commonly show hummocky and swaley cross-stratification, inferred to form beneath storm waves. Calculations using linear wave theory show that storm-deposited cross-strata formed in water depths as shallow as 2 m and as deep as 20 m. Storm-deposited bed forms, though widely known, are almost exclusively reported from shallow marine rocks. Their common presence in lacustrine sediments of the Ontario basin shows that these facies can be a major sedimentary component of the nearshore depositional record of lake basins.

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