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clasts in a high-density turbidity current (i.e., a high-sand concentration flow) are moved by traction (rolling and sliding) to generate a coarse-grained to conglomeratic, parallel-laminated to cross-laminated S1 layer. However, as grains settle and move closer together, grain-to-grain collisions generate dispersive pressures that help prevent further settling. This results in smaller grains moving between larger grains and preferentially settling out beneath them. Thus, an inverse-graded layer develops, called a 'traction carpet', since it

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