Quick Bite: Some gorges carved surprisingly fast

By Sid Perkins, 15:50 PM April 15, 2008

Two river gorges along the Atlantic seaboard were carved out over a geologically short period, according to analyses of rock samples from the chasms.

Many large rivers that flow eastward from the Appalachian Mountains spill through narrow gorges just before they dump into the Atlantic Ocean or Chesapeake Bay. Those geologic features are often carved into bedrock that's millions of years old, but new data hint that at least some of the chasms are much younger, says Luke J. Reusser, a geologist...

Source URL: https://www.sciencenews.org/article/quick-bite-some-gorges-carved-surprisingly-fast