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You are browsing the archive for 2016 December 02.

2 December 2016

Friday fold: Dalradian kinks, crenulations, and folded crenulations on Arran

For the Friday fold, let’s travel to the northern edge of the Isle of Arran in southwestern Scotland, where near the town of Lochranza, you can find Dalradian metagraywackes that display a lovely suite of folds. There are kink bands, like this one: And this one: And these en echelon kink bands: And these: But there’s also a more pervasive structural fabric to be seen: symmetrical crenulations: And in places …

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