Posted on 02/15/2015 3:33:52 AM PST by Crazieman
SAN JOSE, California (AP) -- Small earthquakes shaking Oklahoma and southern Kansas daily and linked to energy drilling are dramatically increasing the chance of bigger and dangerous quakes, federal research indicates.
This once stable region is now just as likely to see serious damaging and potentially harmful earthquakes as the highest risk places east of the Rockies such as New Madrid, Missouri, and Charleston, South Carolina, which had major quakes in the past two centuries.
Still it's a low risk, about a 1 in 2,500 years' chance of happening, according to geophysicist William Ellsworth of the U.S. Geological Survey.
(Excerpt) Read more at hosted.ap.org ...
We have been rocking down here in southern Kansas pretty nicely.
This region is now one of the most seismically active on the planet. On average, the Kansas-Oklahoma border accounts for 12% of the entire world’s 2.0-4.0 earthquakes.
zer0 would have us freeze in the dark rather than have a few tiny shakes.
There were quakes in OK before oil drilling.
And the chance of a risk of “a big one”:
“...about a 1 in 2,500 years’ chance of happening....”
So, even before fracking there was at least a 1 in a hundred years chance of a major quake (that is what actually happened).
What difference does adding 1 in 2500 years probability make, even if the research is actually true?
How deep are the foci of these quakes?
I don’t buy in to the fracking causing it, don’t worry. I know its a 70 year old technology that has only gained a sudden evil presence.
Meanwhile fracking goes on in a massive fashion in North Dakota and they have zero earthquakes.
I’d rather look at what the natural causes might be.
And it is interesting, because we’re talking about a 35,000% increase over just a few years ago when it averaged 2 a year.
Usually 4-10 miles
“How deep are the foci?”
“Usually 4 - 10 miles.”
Many people are unaware that there exists, deep under the Midwest, an ancient rift valley. It is buried underneath silt which is very unstable during earthquakes. Speculation has been that the rift is dormant; but some geological features never truly die.
Yes I know, it is where North America attempted to split apart. From roughly Lake Superior down to Oklahoma City there’s a 50 mile or so line of igneous rock from the upwelling.
Thanks. So, below 22,000 ft. I know there are some deep wells in the Anadarko Basin, but with the foci between 22,000 and 44,000 ft., I’d have a little trouble blaming drilling and fracking without seeing data connecting the two.
How do more small quakes, which release energy, increase the odds of a large quake?
Sounds like that rift may be making a very public reappearance.
For those who do not know what a ‘rift’ is, it is a volcanic slit in the the earth’s crust. An example would be the mid-Atlantic rift (which extends for thousands of miles) and it powerful open-air appearance in Iceland, where the rift created islands.
Zoom out on that map and look at an area where over 10,000 wells have been drilled and fracced in the last 15 years. (Eastern Montana and Western North Dakota). Zero 2.5+ seismic activity.
With that comparison, the problem is likely not the oil patch,
Exactly. I’d like to look at the natural causes for this.
The Rift Valley in Africa is a good example.
Because earthquake management technologies will involve the use of explosives and government hirelings at the same time.
Alas, the Red River will soon be no more.
As gravity prevails on the Oklahoma land mass and the small quakes dislodge the crustal block, Oklahoma slides southward threatening to pile up land and close the Red River drainage. The resulting lake on the Texas side will have a deleterious effect on agriculture
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