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 Post subject: Saudi Arabia vulnerable to volcanoes?
PostPosted: Sat 2. Oct 2010, 07:37 
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Joined: Wed 1. Apr 2009, 21:22
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From: Maggie Fox & Philip Barbara, Reuters, WASHINGTON, DC
Published September 27, 2010 06:35 AM



Saudi Arabia vulnerable to volcanoes?



Magma has worked its way up to just under the surface in a remote region of northwest Saudi Arabia, causing a flurry of small to moderate quakes and threatening to form a new volcano, researchers said Sunday.

A swarm of 30,000 quakes shook the region of Harrat Lunayyir from May to June last year and opened an 5-mile long rift, the U.S. Geological Survey team reported.

A wary Saudi government evacuated 40,000 residents at the time but has since let them move back home. But the residents should be ready to leave again if the ground starts to shake, the USGS team reported in the journal Nature Geoscience.

"This finding indicates that the region is at risk from significant geohazards," John Pallister of the USGS and colleagues at King Abdullah University of Science and Technology in Saudi Arabia and elsewhere wrote.

The area is known for its lava fields, called harrat in Arabic, as well as small volcanic cones and volcanic ash called tephra.

Photo shows Harrat Lunayyir volcano. Credit ilsul6ana.com

Article continues: http://www.reuters.com/article/idUSTRE68Q0DO20100927


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