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14 July 2017
Friday fold: chevrons in the Scaglia Rossa, Apennines
The Friday fold visits the Apennine Range of central Italy.
7 July 2017
Friday fold: marble in a thermopolium at Herculaneum
It’s Friday. Let’s find a historic sort of Friday fold in the ruins of Herculaneum, Naples, Italy.
26 May 2017
Friday fold: Macigno turbidites II
It’s Friday. We return to Italy’s Macigno Formation for a fold, courtesy of blog reader Samuele Papeschi.
11 May 2017
The Seven Hills of Rome: A Geological Tour of the Eternal City, by Grant Heiken, Renato Funiciello, and Donatella de Rita
I’m preparing for some time in Italy this summer, and picked up a couple of books to bring me up to speed geologically. The first is a geological guide for Rome. It’s structured around the archetypal “seven hills” of Rome, but the story is simpler in many regards than some other seven-hilled European capitals I could name. Rome’s geology appears to consist of four major units: older sedimentary rocks (which …
13 May 2016
Friday fold: 3D syncline in Macigno Formation
Alan Pitts is the source of today’s fold, a beautiful 3D model of a differentially-weathered sycline in the Late Oligocene to Early Miocene deep water Macigno Formation from western Tuscany, Italy. Here’s a photo: Now for the 3D model, hosted by Sketchfab; After it loads, use your mouse to grab this thing and finesse it around. What an outcrop! What a great 3D model! Thanks for sharing this, Alan!
4 December 2015
Friday fold: interference patterns on Elba
Samuele Jæger Papeschi shares one more fold with us: some deformation here… type III (Ramsay…) interference pattern in Cretaceous calcschists… Cavo, Elba Island Awesome! I hope everyone has a great Friday.
20 November 2015
Friday fold: recumbent limestones of coastal Grosseto
Samuele Jæger Papeschi not only provided this week’s Friday fold, but he also serves as its sense of scale: According to Samuele, these are: folded metalimestones in Punta delle Rocchette, Grosseto. This are pretty interesting transected folds, showing about 10 degrees of foliation dip in respect to their axis Thanks for sharing, Samuele, and happy Friday, all!
13 November 2015
Friday fold: chevron-folded chert
Samuele Jæger Papeschi is the source for today’s fold: Those are: chevron-folds in radiolarian cherts – Jurassic radiolariti fm. – Quercianella – Leghorn, Italy Cool. They look a lot like the chevron-folded cherts near San Francisco. Same age, too.
23 October 2015
Friday fold: Apennine phyllites
Another one from Samuele Jæger Papeschi: NE verging recumbent F2 folds in Paleozoic phyllites – Filladi di Buti fm., Punta Bianca, N. Apennines, Italy
16 October 2015
Friday fold: recumbent folds in metapelites and metalimestones, Apennines, Italy
Anotehr one from Samuele Jæger Papeschi: Recumbent SW verging folds in alternating metalimestones and phyllites in the Metacalcari e Filladi formation, seen at Anisian, Punta Bianca, La Spezia, N. Apennines, Italy
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.