Surprise: Iceland's Strange Pillars Formed by Lava
They're common in ocean, but these are first seen on land: Study
By Arden Dier, Newser Staff
Posted Oct 13, 2013 6:10 AM CDT
Stock image of flowing lava. The Icelandic pillars started with that.   (Shutterstock)

(Newser) A new study has finally spelled out how some weird-looking land forms in Iceland came to be. Sadly, the local legend that they were tossed there by warring trolls turns out to be wrong—but the real reason is pretty interesting in its own right. They're lava pillars, formed when water and lava mix, according to University of Buffalo researchers. But what makes these pillars unique is that they're the first of their kind to be found anywhere on land, reports LiveScience. The pillars are hollow, scarred, rocky things up to 8 feet tall and 3 feet wide. "I was so excited," says co-author Tracy Gregg. "As soon as I saw these things I knew what they were."

That's because she had seen similar pillars on the ocean floor. They're able to form there, thanks to intense pressure, explains Science. But on land, it's near impossible because the meeting of lava and water typically results in an explosion of steam. So what happened? The study theorizes that the pillars in Skaelinger Valley were formed when a massive eruption in 1783 spilled lava for eight months. But the lava moved so slowly that when it finally made contact with water in the valley, it did so in a "kinder, gentler" manner that avoided an explosion. The find opens up the possibility of more lava pillars elsewhere on land, but Gregg will be looking beyond Earth. If the pillars can be found in high-resolution images of Mars, she says it would be a sign that the planet once had water. (Meanwhile, Jupiter might have diamond rain.)

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Showing 3 of 9 comments
Oct 13, 2013 2:30 PM CDT
Oh so, the Icelanders' firm belief that the stone pillars were warring trolls turned out to be wrong? No shocker... We're talking about one of the last three countries still mass-slaughtering and eating the second most intelligent lifeform on Earth: Whales.
Oct 13, 2013 11:47 AM CDT
Ah, our beautiful, Good Earth. It is so comforting to see parts of it where human bodies have not encroached and ruined it. Yet.
Oct 13, 2013 10:55 AM CDT
Love Iceland bet they don't have illegal immigrants.