Supervolcano eruption in central Europe 13,000 years was tough on teeth
By ANIMonday, September 28, 2009
WASHINGTON - If a new study is anything to go by, a supervolcano that erupted in central Europe 13,000 years ago, proved to be tough on the teeth for humans and animals during that period, as a large portion of the region’s vegetation was covered in a blanket of ash and rock bits.
According to a report in Discovery News, the Laacher See supervolcano eruption 13,000 years ago devastated 540 square miles of forested land right around the crater and conservative estimates suggest an area the size of Minnesota was covered in a blanket of ash and rock bits.
Flung into the air at the slightest breeze, the fluffy mixture of tephra particles stung the eyes, irritated the lungs and coated anything animals or people would have cared to eat.
For game animals like elk, hare and reindeer, chewing plants would’ve ground their teeth to the pulp and left them starving.
Wildlife probably fled the worst affected areas of central Europe, leaving northern tribes living in Germany, the Netherlands and southern Sweden marooned on a withered landscape.
Populations dwindled, and archaeological evidence suggests they abandoned bows and arrows in favor of more primitive hunting spears.
“We have very little information on how small scale hunter-gatherer societies would respond to this,” said Felix Riede of Aarhus University in Denmark. “Would they just leave? Or would they try and deal with the tephra?” he added.
In the study, Riede and colleague Jeffrey Wheeler of the University of Cambridge in the United Kingdom show that the volcanic particles are about twice as hard as most mammal teeth, including those belonging to humans.
Any meal seasoned with a coating of tephra would have been miserable, if not life-threatening.
Even a few months of exposure to tephra could have been devastating. But Riede and Wheeler think it could have lingered on the landscape for as much as 300 years, carried away by rain only to return in drifting, wind-blown dunes. (ANI)
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September 28, 2009: 8:46 am
This is an interesting article, the one single flaw I find in it is the usage of the term “supervolcano” for the Laacher See volcano. While the term “supervolcano” itself is, in my humble opinion, erronneous (it litterally means “more than a volcano”, although the biggest volcanoes such as Yellowstone are still nothing but volcanoes) and sensationalistic, the 13,000 years before present Laacher See eruption was about as big as Vesuvius’ famous Pompeii eruption in AD 79, with approximately 5 cubic kilometers of magma expelled. Yellowstone-type “super” eruptions have magma volumes of at least hundreds, if not thousands, of cubic kilometers. So, Laacher See was a Plinian eruption, which produced pyroclastic flows and widespread ash falls, but a far cry from Yellowstone or Toba size events. |
Boris Behncke