4.7 Magnitude Earthquake Rattles Parts Of Arkansas, 4029 TV, February 28, 2011:
... Scientists said the earthquakes are not on the infamous New Madrid fault line.
Margaret Guccione teaches Geosciences at the University of Arkansas.
She said the recent swarm of earthquakes could be man made.
"There has been suggestion that rather than a totally naturally phenomena, that this may be exasperated by pumping water down from the wells that they use for fracking of the Fayetteville shale," said Guccione.
Natural Gas Drilling Might be the Cause of Arkansas Earthquakes, Geologists Say, KSPR, February 28, 2011:
The question many have Monday, is why would a 4.7-magnitude earthquake strike outside of the New Madrid Fault System? According to the Arkansas Geological Survey, this is the largest quake outside of the fault system since 1969. ...
Geologists have a guess. "There's a whole bunch of natural gas exploration there. They inject fluids there, and that's been shown to kind of lubricate faults and case small magnitude earthquakes," says Mickus. ...
"There's nothing much tectonically going on here. So, no. That's a good study. It's a good thesis," says Mickus.
4.7 is a little large for a frac', no ?
I read somewhere's frac's usually register below a 3.
Of course the gas industry is saying not from fracking but if one combines many frack jobs over a large area it could produce a large quake but also allow a normal quake (not from fracking) to be larger then would have been ?
http://www.geology.ar.gov/geohazards/earthquakes.htm
Kind of busy at the moment-- to pin point exactly...i think it might be part of this situation.
@ xdrfox
..Idk honestly, I would wager if they were being done on a faultline , it's entirely possible. I did read some papers last year about frac'ing on faultlines in Germany ( and the results of it ) , also Exploration Technologies have some info online about it.
On a geological note..folks seen this?
http://media.nola.com/2010_gulf_oil_spill/photo/gulf-oil-len-bahr-dredging-sand-berms-horizontaljpg-11ef8b038ad2092e.jpg
This mess while the people get hungry and sick.
This cost a fortune ..the little fortune Louisiana could spare.
The disposal of fracking waste, sure enough. google gasland again and prepare to feel your own internal shockwaves
http://www.upi.com/Science_News/2010/12/24/Clues-sought-in-Arkansas-earthquake-swarm/UPI-16101293217985/
4.7 now. wow. picking up in intensity. evac if u can now. my prayers are with you and i am sorry. Godspeed.
Arkansas Suspends Drilling of Injection Wells after Earthquake Swarm
http://www.allgov.com/Controversies/ViewNews/Arkansas_Suspends_Drilling_of_Injection_Wells_after_Earthquake_Swarm_110302
Many more small quakes since the 4.7 ----
http://earthquake.usgs.gov/earthquakes/recenteqsus/Maps/US2/34.36.-94.-92_eqs.php