14 October 2011
Posted by Callan Bentley
North of Fort Frances, Ontario, October 7, 2011. Centimeter-demarcated pencil for scale.
The granitoid vein intrudes metasedimentary rocks of the Archean-aged Quetico Group, exposed on the Superior Craton. Note the thickened hinges, the boudinage of the lower right long limb, and incipient boudinage of the upper left long limb.
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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Looks a bit like a rattlesnake, with the lower right boudinage as the rattle, no?
I like the way you think! 🙂
Where did you get that pencil?!
It was a freebie from Little River Research and Design, of Carbondale, Illinois.
That’s near my home! 🙂