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6 September 2019

Friday fold: Gonzen, Switzerland

Science writer Gabe Popkin shared two fold photos with me this week – both from near Sargans, Switzerland, adjacent to the Rhine River Valley and the border with Lichtenstein. The photos shows the mountain called Gonzen. There, Jurassic limestones crop out in a very wavy pattern: I don’t know the geology of this area in any kind of detail, but I decided to trace out a distinctive upper surface of …

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24 May 2019

Friday fold: Riffelhorn (+xenolith)

Naomi Barshi shares this “deskcrop” Friday fold… Naomi says she found this fold: near the Riffelhorn, Gornergrat, above Zermatt, Switzerland. The sample has befriended my other show-off sample of a mantle xenolith from San Quintin, Baja California. Thanks for sharing, Naomi! The xenolith is a nice bonus!

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8 March 2019

Friday fold: Dent de Morcles

The Friday fold is a recumbent anticline/syncline pair, deforming the K/Pg boundary in the Swiss Alps, as photographed from the air by Bernhard Edmaier.

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20 July 2018

Friday fold: Alpine peak containing a high elevation recumbent fold

Via Twitter, a Friday fold from Maddy Rushing: #FridayFold, @callanbentley? pic.twitter.com/eaKIuuvFgB — Maddy Rushing (@komaddyite) May 25, 2018 This is in the Alps of Switzerland; I don’t know more about it than that. If you recognize the site or the geology, educate us in the comments!

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15 June 2018

Friday fold: scenes from the Schilthorn cable-car

My friend Karen Aucker from NAGT’s Eastern Section shared these images (and a video!) of the folds she glimpsed from the cable-car on her way up the Schilthorn in Switzerland. I reckon they will do for our Friday fold: [youtube_agu id=RmxCN8Pte38] Thanks for sharing, Karen! These are great. Happy Friday, all!

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8 December 2017

Friday fold: Alpine cross sections by Albert Heim

The Friday fold is a figure from a 1922 book about the geology of the Alps by Swiss structural geology genius and artistic master Albert Heim. Marvel at his gorgeous depiction of the internal and long-since-eroded structure of these mighty mountains.

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13 December 2011

Tuesday Geology Picture: A Gneiss Double Arch Bridge in Valle Verzasca

Since I’m too busy for regular blogging, this week is geology picture-a-day week here at Georneys. Several other geobloggers have also decided to join me in this blogging meme. Feel free to start today, even if you didn’t post a picture yesterday. Today’s geology picture is of a beautiful, old double arch bridge spanning the Verzasca River at Ponte dei Salti in Lavertezzo, Switzerland. The middle part of the bridge …

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