Small Arkansas earthquakes could be warning

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Expert: Small Arkansas earthquakes
could be warning

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28 Nov 08 - "A series of small earthquakes that rattled central Arkansas in recent weeks could be a sign of something much bigger to come.

"The potential for generating a high-magnitude earthquake is real," said Haydar Al-Shukri, director of the Arkansas Earthquake Center at the University of Arkansas at Little Rock.

"Five earthquakes ranging in magnitude from 2.2 to 2.7 have hit central Arkansas this month.

"But central Arkansas does not have any seismic history, Al-Shukri said. "It is abnormal. It is significant," he said. "We need to carefully watch this activity."

"One possible culprit could be a hydrothermal quake, caused by extremely hot fluid pushing into rocks under the surface. The hot fluid percolates into the cracks of the rocks and causes movement, Al-Shukri said.

"That theory matches the geologic history of the area. Central Arkansas is home to the city of Hot Springs, where 143-degree water rushes to the surface continuously.

See entire article:
http://www.comcast.net/articles/news-science/20081128/Arkansas.Earthquakes/
 


 



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