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LITTLE ROCK, Ark. — A previously unknown fault in eastern Arkansas could trigger a magnitude 7 earthquake with an epicenter near a major natural gas pipeline, a scientist said Wednesday.
Haydar Al-Shukri, the director of the Arkansas Earthquake Center at the University of Arkansas at Little Rock, said the fault is separate from the New Madrid fault
The fault, likely created in the last 5,000 years, sparked at least one magnitude 7 earthquake in its history
. Such temblors cause massive destruction in their wake.
"This is a very, very dangerous (area) at risk of earthquake," Al-Shukri said. "When you talk about (magnitude) 7 and plus, this is going to be a major disaster."
Originally posted by getreadyalready
reply to post by PuterMan
I disagree. Yes, NE Arkansas gets a lot of New Madrid Activity, but the Activity near Searcy lately is very unusual. It is not associated with the other fault, and it is blamed on a newly discovered fault line. Also, the shallowness of the activity means a lot more surface damage if they get a big one.
Fractures are also induced by pumping pressurized fluids down the well bore to fracture the rock unit. These additional fractures enhance the permeability of the Fayetteville Shale and allow more efficient gas production.
It is in one of my original links as well.
Haydar Al-Shukri, director of the Arkansas Earthquake Center at the University of Arkansas at Little Rock, discovered the Marianna Fault after searching for a fault since 2005. The fault line is seven miles long, with 110 metres (360 ft) dimensions. The land above the Marianna Fault is mostly cotton fields, but the presence of fertile soil with stretches of fine sand alerted seismologists to the fault's existence. It is believed that the Marianna Fault has previously experienced an earthquake that would have measured 7.0 on the Richter magnitude scale, and may well do so again. Al-Shukri believes that the fault was created 5,000 years ago.
I'm sure it will be abundantly clear in hindsight!
Haydar Al-Shukri announced the discovery of the Marianna Fault on January 21, 2009. Days later Al-Shukri stated that more funding is required to study the fault, which would include studying if the fault is still active. The lack of seismic equipment in the vicinity is one factor in the need for additional funding.
A pipe laid by Arkla Energy Resources runs through the area but a spokeswoman for the company would not say if it was the one near the fault's epicentre.
Pictures of Marianna before the Earthquake
Originally posted by starsyren
Fine...I'll say it!
UFO Casebook: The White Manuscript
It's the underground alien base under the Ozarks, one of the entrances to which can be found 5mi underneath Blowing cave in Cushman, AR.
Geez, that was easy....
LITTLE ROCK — Geologists are installing a temporary sensor just west of Searcy to record seismic activity after a series of earthquakes that have rattled the area in recent days.
The U.S. Geological Survey lists nine quakes in White County since Saturday, with the strongest occurring that night about 7 miles northwest of Garner. That quake measured 3.3 on the Richter scale.
The quakes have continued each day since, including a 2.2-magnitude earthquake reported just before 10:30 a.m. Tuesday about 6 miles west of Searcy. More than 100 people have reported feeling the stronger tremors.
Scott Ausbrooks, the geohazards supervisor with the Arkansas Geological Survey, said the temporary earthquake sensor should be online by the end of this week and will record better data should more quakes occur in the same White County region.
"You can equate it to tornado-chasing," Ausbrooks said by phone from the White County site. "You hate to say it but you need more earthquakes to get more data."
He said scientists have found certain earthquakes to have been caused by man-made operations, such as re-injecting fluids in an oil field or emptying a large reservoir. But definitively saying whether a quake was caused by such work is always tough.
"A lot of people think 'oh we're hiding something,'" Blakeman said. "We're not. It's up in the air because it's very hard to figure out correlation. It's not like you drill a well and the next day you get a whole bunch of earthquakes. And in areas like Arkansas that have earthquakes anyway, it's hard to know what's natural and what's not."