The experimental study by Breien et al. (2010) is important because it shows that massive sands can be deposited by laminar sediment flows. The massive sands in these experiments represent deposition from a “fluidized segment” of the flow. Breien et al. (2010, p. 977) consider fluidization as “…a mechanism where the mass moves like a fluid, and as the particles settle due to gravity, the pore fluid is displaced upwards, thus providing further grain support.” This fluidized-flow segment can also be termed a sandy debris flow if one defines debris flow as flow that is laminar. Illstad et al....

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