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Delta-CamDelta-cam is a simple stream-table in the basement of the ES building. The sediment consists of finely crushed Twin Sisters dunite. To start a delta, we construct a river plain on the upper half of the stream table, then run water from the pump over it and into a “lake” in the lower half, using plastic barriers to constrain the position of the river mouth as it enters the lake. A delta develops through time (usually over the course of a few days), after which we can shut off the water, drain the lake, and sample the delta.

What shape will the delta take? What processes relate to that morphology? How will the grain sizes vary in the table? We ask our students these questions and others during the lab.

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