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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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5 October 2018

Friday fold: Vernazza, Italy

For this Friday’s fold, we must journey to the storied Cinque Terre coastline of Italy, where we will encounter some mysterious turbidites…

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28 September 2018

Friday fold: Big Cottonwood Fm., Slate Canyon, Utah

It’s Friday and that means it’s time for a fold. Today we head to Cottonwood Canyon, Utah, with reader Octavia Spencer, for a lovely antiform.

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21 September 2018

Friday fold: quartz veins in metagraywacke of the Mather Gorge Formation

It’s Friday! Here’s a lovely sight, contributed by reader Fred Atwood: Those are quartz veins in one of my favorite local rock units, the Mather Gorge Formation. Fred reports, This is at Madeira School in Great Falls between Black Pond and the Potomac. The rocks around Great Falls, particularly those on the Billy Goat Trail’s “A” Loop, are exemplary in many regards. That’s why I am taking my Physical Geology …

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14 September 2018

Friday fold: Ferruginous sediments in Barberton Mountain Land

A trip back to Archean sedimentary rocks in Barberton, South Africa, reveals a few folds on the roadside…

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7 September 2018

Friday folds: Continuing contorted Conestoga carbonates

The first Friday of September calls out for a fold. The Burle Business Park in Lancaster, Pennsylvania has an answer – several of them, in fact!

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31 August 2018

Friday folds: Rifugio Fontana in the Dolomites

TGIF: “Thank Geology It’s Friday!”
Time for a fold or a dozen – let’s travel to the Italian Dolomites to see some kinky crumpled limestones…

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24 August 2018

Friday fold: Gneiss from Arapaho Pass, Colorado

It’s Friday, and I have another guest Friday fold to share: This one is from my Denver friend Greg Willis, who tells me it’s from near Arapaho Pass, near where we rain-hiked. Ahhhh, yes – a singularly soggy hike up in the Colorado Rockies. I remember it well, and it looks like Greg had better weather on this jaunt! Happy Friday to all!

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17 August 2018

Friday folds: Moomaw Reservoir outcrops

Break out your paddle and sunhat. We’re going kayaking on Lake Moomaw, in search of Friday folds…

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