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Earthquakes - New Madrid
4:00 pm
Thu December 15, 2011

200 years after the New Madrid earthquakes, the legends live on

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Credit (M.L. Fuller, image 137/USGS)
Caption: This photo, taken in Blytheville, Missouri, in 1904, shows sand blows (lighter patches) resulting from the New Madrid earthquakes.
Credit (USGS)
A U.S. Geological Survey map of the United States showing zones of seismic hazard.
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Friday, Dec. 16, marks the 200th anniversary of the first of the New Madrid earthquakes, a series of large tremors centered in northeastern Arkansas and southeastern Missouri.

The earthquakes of 1811 and 1812 were so big, legend has it, they made the Mississippi River run backwards.

Seismologist Susan Hough of the U.S. Geological Survey in Pasadena, Calif., says that’s actually true – at least where the fault crosses underneath the river channel.

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Morning round-up
9:33 am
Wed December 14, 2011

Morning headlines: Wednesday, December 14, 2011

Credit M.L. Fuller (Image 336)/USGS
The New Madrid earthquakes broke up rock like this section of rock face, which was later filled with sand. This photo, from Mississippi County, Mo., was taken in 1904.
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Mo. schools and residents to prepare for next big earthquake

It was nearly 200 years ago that the first in a series of massive earthquakes shook Missouri and much of the nation. Now, several Missouri school districts will take part in a drill to prepare for the next big one.

State officials say that nearly 100 districts and individual schools have registered for Missouri's second statewide earthquake drill at 10:15 a.m. on Feb. 7. Meanwhile, more than 146,000 residents are also registered for the drill, called the "Great Central U.S. ShakeOut."

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New Madrid Fault / Earthquakes
4:37 am
Sat August 27, 2011

At New Madrid fault, shaky guesses on next quake

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Credit M.L. Fuller (Image 336) / USGS
The New Madrid earthquakes broke up rock like this section of rock face, which was later filled with sand. This photo, from Mississippi County, Mo., was taken in 1904.
Credit M.L. Fuller (Image 362) / USGS
The earthquakes caused the Mississippi River to overflow its banks. The high water brought sand, which covered up several feet at the base of trees. The trees survived and grew roots into the new sand, which had been washed away by the time this picture was taken in 1904.
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By Veronique LaCapra

The magnitude-5.8 earthquake that rattled the eastern U.S. on Tuesday took everyone — even geologists — by surprise. But even when there are reasons to think an earthquake could be around the corner, scientists still can't make good predictions.

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