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reefs

Stromatoporoids in a Devonian reef

September 12, 2024August 20, 2015 by Callan Bentley

Here are a few shots of a Devonian aged reef exposed in Mustoe, Virginia – one of the sites I visited this spring with GMU’s Rick Diecchio, when he led his sedimentology and stratigraphy trip there. At first, the outcrop made no sense to me – I kept searching for bedding, and failed to find … Read more

Categories devonian, fossils, gmu, reefs, west virginia Leave a comment

Pisolites in the Tansil Formation, Carlsbad Caverns, New Mexico

September 16, 2024February 10, 2015 by Callan Bentley

Pisolites are large primary concretions that develop in backreef or lagoonal settings such as the Permian Tansil Formation of New Mexico, into which is cut the enormous hole called Carlsbad Caverns.

Categories arthropods, caves, GEODE, gigapan, limestone, m.a.g.i.c., national parks, new mexico, permian, primary structures, reefs, texas Tags featured Leave a comment

About Callan

A headshot of Callan Bentley. Callan Bentley is Associate Professor of Geology at Piedmont Virginia Community College in Charlottesville, Virginia. He is a Fellow of the Geological Society of America. For his work on this blog, the National Association of Geoscience Teachers recognized him with the James Shea Award. He has also won the Outstanding Faculty Award from the State Council on Higher Education in Virginia, and the Biggs Award for Excellence in Geoscience Teaching from the Geoscience Education Division of the Geological Society of America. In previous years, Callan served as a contributing editor at EARTH magazine, President of the Geological Society of Washington and President the Geo2YC division of NAGT.

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