23 August 2012
What’s going on here?
Posted by Callan Bentley
Take a crack at it. I’ll discuss it in full tomorrow later.
The blue thing is the handle of a dry-erase marker, to give you a sense of scale.
Connect with Callan:
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.
Other geobloggers are writing about
- Columbia Beautiful Planet 2024 17 April 2024
- State of the Oceans - April 17, 2024 -- Heat pulses settling down 17 April 2024
- El dinosaurio de Shin-chan 17 April 2024
- Plugging the Leak on Laundry Pollution 16 April 2024
- Media finally declares the Death of El Nino 16 April 2024
Parallel kink-bands in shale or siltstone. Kink-bands formed from compressional strain acting subparallel to the bedding (or is it slaty cleavage?). Then the whole mess was rotated into its current position during mountain building. I can’t tell if the beds are overturned or not.
Strongly cleaved shale with thin widely-spaced carbonate beds–both dipping in same direction–anticlinal axis to right, synclinal axis to left
Good guesses. One of you is pretty close. I’ve run out of time for today, so I’ll have to put the explanation off for later – more time for people to guess…