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Rocky outcrop underwater

Detailed Description

Layered chalk and porcellanite (?) exposed along the wall of Block Canyon. The thicker layers of chalk are heavily eroded, whereas the thin beds of porcellanite are relatively intact. Detached blocks of the wall material are visible at the bottom of the image. Image courtesy of NOAA Okeanos Explorer Program, Northeast U.S. Canyons Expedition 2013.


Public Domain.