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You are browsing the archive for 2014 October.

15 October 2014

In search of Santorini’s blueschist, part 2: finding fault

As mentioned last week, I took a solo field trip north of Perissa, Santorini, Greece, in search of subducted rocks. The contact between the two main rock types (marble and schist) was prominent and visible from a great distance (see photos in previous post), but what was the nature of this contact? Did it represent conformable stratigraphy? Was it a fault? Here’s a closer look at the contact: In places, …

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10 October 2014

Friday folds: ploudin trio from Corridor H

Three folded sandstone slab-blobs will serve as today’s Friday folds. Meet the ploudins!

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9 October 2014

In search of Santorini’s blueschist, part 1: into the Valley of the Shadow of Ash

While in Santorini, Greece, your humble geoblogger braves a warm afternoon to search the hillsides for evidence of subduction.

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8 October 2014

Lunar eclipse images from the past 2 hours

A selection of “moon shots” from this morning’s lunar eclipse is presented.

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6 October 2014

Non-bedding-parallel stylolites in Tonoloway limestones, Corridor H

What can a little squiggle in a rock tell us? Stylolites in West Virginian limestone cut across the bedding plane, implying Alleghanian tectonic stresses.

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3 October 2014

Friday fold: En route to Santorini over the Cyclades

A glimpse out an airplane window reveals some Cycladean geology in the Aegean Sea. Somewhere down there among the metamorphic rocks is our Friday fold… but nary a volcano in sight.

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