"The surface of an alluvial fan is like a segment of a cone. The radial profile toward the lower reach is concave and the cross-sectional profile is convex. A delta ..."
"An alluvial fan is like a delta on top of the ground. It's like a dog wagging its tail. It could be over here and then move over there for a while. You can see it over there, but not necessarily here until flooding and then it changes its course and goes out into a fan shape into the valley," he said. "For archeology, it's great because we need the sediments to cover up campsites and things like that."
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.