Two massive earthquakes rock US state of Oklahoma
OKLAHOMA was shaken by two massive earthquakes which rumbled through the US state today.
Oklahoma has been struck by a earthquake
Both quakes were centered about 95 miles (153 km) northwest of Oklahoma City. The first quake hit at 11:07 local time (1707 GMT), and the second one came about 10 minutes later, the USGS said.
The larger earthquake was described as the "second largest in Oklahoma and the largest in this general area", by a geophysicist at the USGS National Earthquake Information Centre.
John Bellini said Oklahoma's previous largest was a 5.6 earthquake in 2011.
The epicenter of the larger earthquake was 95 miles (153 km) northwest of Oklahoma City and around a mile (1.6 km) deep underground, the USGS said.
A fracking site in Oklahoma
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It was felt across central and northern Oklahoma.
It was not known if the quake was linked to oil production activities. Oklahoma has seen a surge in seismic activity in recent years, which seismologists have said may be linked to oil production activities.
The state has been recording 2.5 earthquakes daily of a magnitude 3 or greater, a rate 600 times greater than observed before 2008.
There were no immediate reports of damage.