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11 January 2019

Friday fold: more from Utah

For the final Friday fold of 2018, we return to Utah’s Slate Canyon, where “Mountain Beltway” reader Octavia Sawyer shares an anticline with parasitic folds shaped like “sea serpents.”

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21 December 2018

Friday fold: Samaria Gorge, Crete II

The Friday fold is a guest submission from AGU’s new Chief Digital Officer, and shows a spectacular set of recumbent folds in Crete.

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14 December 2018

Friday fold: Titus Canyon Anticline

A guest Friday fold brings us to a position in the sky somewhere over eastern Death Valley National Park. Join us in contemplating the Titus Canyon Anticline.

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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.

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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 …

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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

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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!*

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26 October 2018

Friday folds: Mather Gorge Formation

It’s been a very Billy-Goaty week for me. Three times since Sunday afternoon, I’ve taken people to the Billy Goat Trail’s “A” loop in C&O Canal National Historical Park. On Tuesday and Thursday, it was my NOVA Physical Geology students. On Sunday, though, it was just my son and me. Good news! He helped me discover a new fold by exploring some new rock outcrops and climbing on them. He …

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19 October 2018

Friday fold: the Brooks Range, Alaska

It’s Friday, thank goodness. Today our “Friday fold” feature heads north, way north, to the Brooks Range of Alaska. There we find a trio of mountainsides exposing folds photographed in the 1990s.

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12 October 2018

Friday fold: the Devil’s Backbone and its neighbor

It’s Friday; time to stretch our backbones out in anticipation of the weekend. Let’s look to a backboney-named Friday fold for a little inspiration… …And what’s that, just down the road? Another fold, in need of a catchy name…

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