Wednesday, January 16, 2013

Piedmont Streams

Typical NC stream, fresh off the Piedmont, meandering through Triassic basin sediments.  These finer sediments build good point bars, and will hold a slope; geomorphologic indicators for bankfull, are not hard to find.  Relatively recent erosion is undercutting veg on the outside of the meanderbend.  The point bar is under-sized for the depth of the undercut, meaning that this is a gully.  The fine substrate can support tighter bends then if the substrate were sand.

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