11 August 2015
What do you see here?
Posted by Callan Bentley
Click to enlarge
Noodle on that for a minute. I’ll post my answer later.
No hints for now. Just examine what you see in the outcrop.
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About Callan
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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Either one heck of a channel-fill/unconformity or a low angle thrust moving over an undulating surface. I’ll go with the latter.
I go with the low angle thrust too.
Fault-bend-fold
Answers here:
https://blogs.agu.org/mountainbeltway/2015/08/14/paleoslump-features-and-fluvial-incision-in-the-conemaugh-group-west-virginia