Earthquake history recorded in stalagmites

Earthquake history recorded in stalagmites

Caves could yield insight into how often major Midwestern quakes have happened

By Sid Perkins, 10:43 AM October 6, 2008

HOUSTON — The dates at which some Midwestern cave formations began to grow could help researchers chronicle the earthquake history of Missouri and surrounding states, according to work reported October 5 in Houston during the annual meeting of the Geological Society of America.

During late 1811 and early 1812, a series of major quakes rocked the New Madrid Seismic Zone, a fault system named for a small town in southeastern Missouri near the center of those temblors. Scientists ...

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