17 November 2023
Posted by Callan Bentley
On my way back to Virginia from Hawaii, I had a three hour layover in the Atlanta airport. There, I spotted this charismatic stone paver on on the terminal floor. It showed folds, and so I snapped a photo, but it also shows plenty more…
An annotated copy:
Happy Friday, all!
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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There’s a lot going on in this rock; it would be nice to see the outcrop it came from (and a couple thin sections). In southern Colorado, some of the metamorphic rocks of the “Idaho Springs Fm.” contain metamorphosed volcanic clasts–another possibility for the things you interpret as andalusite porphyroblasts. In any case, those objects might be a clue to defining “bedding”.
If we are silent, the floors will cry out!