Oklahoma
rattled by 15 earthquakes
23
March, 2014
The
U.S. Geological Survey has recorded 15 earthquakes in Oklahoma since
about 9:30 p.m. Friday, the largest being a magnitude 4.0.
The
4.0 magnitude quake was recorded at 10:05 p.m. Friday about seven
miles south of Langston. Three other quakes of magnitude 2.9, 3.0 and
3.3 were recorded Saturday afternoon in the Medford area.
The
other quakes ranged from magnitude 2.4 to 2.9.
No
injuries or damage are reported.
Geologists
say earthquakes of magnitude 2.5 to 3.0 are generally the smallest
felt by humans.
Scientists
are studying why earthquake activity has increased in Oklahoma and
whether it is connected to wastewater disposal related to oil and gas
production -- but have found no answers.
The
energy industry denies that the method is to blame for the increased
seismic activity.
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