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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

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13 October 2015

Summer 2016 European GigaPan expedition: Sites wanted

Great news – I have been awarded a great professorship for the next two years. The Chancellor’s Commonwealth Professorship is a great honor and a major investment by the Virginia Community College System in me and my GigaPan project. I get course release time, a summer stipend, and reimbursable expenses of around $7500. I intend to use that money and that time to do a major GigaPan expedition in Europe …

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9 October 2015

Friday fold: Apennine crenulation cleavage

My new social media buddy Samuele Jæger Papeschi and I collaborated on some goofy maps in August, but then he noticed my Friday folds, and like the very best human beings anywhere, Samuele offered to pitch in with a few folds of his own. (Other readers are encouraged to do the same!) Today, I’ll feature the first of them – though others will follow in weeks to come. That is crenulation cleavage …

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22 January 2015

The lip of the caldera

One last post from my September trip to Greece. Here’s a look north along the inside wall of the central caldera of Santorini, taken from the deck of the Santos Winery. It’s not hard to imagine the volcanic edifice that filled the space to the left (west) prior to The Big One.

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20 January 2015

Building stones of the Acropolis (Athens, Greece)

As a follow-up to my post about the geology of the Acropolis klippe in Athens, Greece, and in the spirit of my post on the building stones of the Haghia Sophia in İstabul, Turkey, let’s turn our attention today to the various rocks that ancient Greeks used to construct the buildings of the Acropolis, such as the Parthenon. When we went to Greece in September, we didn’t just look at …

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17 January 2015

Geology of the Acropolis (Athens, Greece)

When visiting Athens, Greece, you are drawn to the Parthenon’s grand architecture atop the hill called the Acropolis. But why is the Acropolis a hill?

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11 November 2014

Santorini panorama

Here is the view north across the central caldera of Santorini, Greece: Click to enlarge to 9000 pixels wide This caldera formed during the Bronze Age, maybe as early as 1628 BCE or so, maybe as late as 1500 BCE. There are new volcanic islands rising in the center.

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6 November 2014

Santorini ashfall and Akrotiri

Santorini is an island with nice exposures of the Tethyan subduction complex, yes. But did you know there’s also a volcano there? 🙂 Here’s a shot of some snorkelers, with a lovely stack of pyroclastics rising up behind them. Ash, lapilli, more ash — Santorini’s volcano has been very active over the years. This is a prodigious quantity of volcanic material. In the year 1627 BCE, the eruption of Santorini’s …

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17 October 2014

Friday fold: Santorini schist

Happy Friday! Here’s some folded schistocity in the schist of Santorini’s Cycladean subduction complex: The blunt crest of the fold in the second photo appears to be a folded marble boudin. Neato!

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16 October 2014

Boudinage in Santorini schist

While on my blueschist quest, I noticed this boudin train exposed in the trail. I’m not sure what exactly is being boudinaged here – only that it is lighter in color than the schist that surrounds it, as well as finer grained and less foliated (more massive). A tabular mass of fault gouge perhaps?

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