As a St. Patrick’s Day treat, here’s a great photo of one of Ireland’s most famous geologic locales, Giant’s Causeway. Formed from a Paleogene (40-50 mya) basaltic lava flow, rapid cooling and contraction resulted in some 40,000 columns and one very picturesque coastline. Photo credit goes to All That is Interesting.
Giant's Causeway, Northern Ireland
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