You are browsing the archive for November 2018 - Mountain Beltway.
23 November 2018
Friday fold: loopy limestone in Utah
The countryside near Provo, Utah yields a terrific Friday fold in an outcrop of Cambrian limestone.
21 November 2018
Brittle overprinting ductile in the South Mountains metamorphic core complex, Phoenix, Arizona
Today, we take a look at the structural geology that reveals the deformation evolution (first ductile, then brittle) of the South Mountains metamorphic core complex, south of Phoenix, Arizona. Expect lots of photos of smeared-out rocks, broken by faults.
17 November 2018
Flow banding in pseudotachylyte, South Mountains, Arizona
Watch the flow of frictional melt in a “fossil earthquake,” frozen in time atop the South Mountains metamorphic core complex in Phoenix, Arizona.
16 November 2018
Friday folds: more deformation from Cinque Terre, Italy
A return to coastal Italy on this wintry Friday… You’ll recall that The Other Callan shared some fold imagery with us a few weeks back as he explored the Cinque Terre region of Italy. He is back in the States now, and has been kind enough to share his geology-themed photos with me, so I can share them with you. Take a gander: Several people more familiar with these rocks …
9 November 2018
Friday fold: gneiss from the Southside Virginia Piedmont
Reader and former student Paxton DeBusk shared this lovely folded gneiss with me at the conclusion of the Virginia Geological Field Conference a few weeks ago: That’s a lovely hand sample, with a high folding:volume ratio! Happy Friday, all
6 November 2018
GSA report: the James Shea Award
I’m at the GSA Annual Meeting in Indianapolis this week, and I got an award today: the James Shea Award from the National Association of Geoscience Teachers. I was introduced at the awards luncheon today by my co-nominator Kaatje Kraft, who had many nice things to say. I followed her comments with this little speech: Thank you, Kaatje, and also to Joshua Villalobos for nominating me. I’m getting this award …
2 November 2018
Friday fold: Refolded marble from Corsica
The Friday fold comes to us from Corsica via University of Washington structural geologist Darrel Cowan. It’s a marble that’s been folded *twice!*
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.