Earthquake rattles North, South Carolina

Tuesday, March 22, 2011 1:02 AM
Last updated 1:10 AM
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CHESTERFIELD, S.C. --- A small earthquake in South Carolina near the North Carolina state line shook homes and led more than 100 people to call 911.

The U.S. Geological Survey said the 2.9-magnitude quake struck just after 6 p.m. Monday between Chesterfield and Wadesboro, N.C.

Chesterfield County Emergency Management Director Harold Hainey says no damage or injuries were reported, but the 911 center got more than 100 calls.

In Anson County, N.C., Emergency Services Chief Rodney Diggs says he also had no damage or injuries.

The South Carolina Seismic Network reports five other earthquakes of magnitude 2.0 or greater in the past two years.

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seenitB4
111991
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seenitB4 03/22/11 - 06:58 am
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Oh....no.....getting close.

Oh....no.....getting close.

Rolling Eyes
248
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Rolling Eyes 03/22/11 - 07:10 am
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Not very surprising as its on

Not very surprising as its on a fault line and small quakes happen with a fair degree of frequency. We wouldn't have heard about it but for the fact that earthquakes are a hot news topic right now. You can google earthquakes in this country and see a map of quakes that have happened in the past couple weeks. I'll bet most people would be stunned to see how many have been happening, and how common that they are.
But for those who like to have things to worry about, SRS sits on that fault line......

augusta citizen
10686
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augusta citizen 03/22/11 - 07:18 am
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Thanks for pointing that out

Thanks for pointing that out Rolling Eyes, and just when I was about to enjoy my first cup of coffee, too!

Crime Reports and Rewards TV
33
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Crime Reports and Rewards TV 03/22/11 - 11:24 am
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If earth is 4.5 billion years

If earth is 4.5 billion years old REAL Science says earthquakes should not be happening so frequently. This just proves earth is not nearly as settled down nor as old as those with an agenda to get billions in taxes would have you think. Just like the Global Warming scam, the long age scam gets billions by lying.

burninater
10858
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burninater 03/22/11 - 12:24 pm
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I don't mean to be

I don't mean to be contradictory, but from the quick reading I did, I can't find any sources that suggest that there is a through-going fault running from SRS up to the SC-NC border. However, there ARE a number of fault systems underlying SRS. There is no evidence that these fault systems are "currently" active. Rolling Eyes is absolutely correct that small earthquakes occur most everywhere, with very high frequency, but they are not necessarily the result of a known fault system.

Faults are responses to strain in rock -- if you deform the rock enough, it will crack. Once one of these cracks forms, it is a weakness in the rock. If you continue to strain the rock, it is more likely to fail on that crack rather than anywhere else. Repeated failures along the same crack allow the crack to develop into a significant fault. Places like California have faults that are still responding to the forces that created them in the first place, so you still see repeated earthquakes along those same faults. The east is a different situation, because most of the faults were generated by forces that existed millions of years ago, but don't exist today. So, you can have a fault, like those that exist at the SRS site, but unless you have a situation where force is being exerted similar to the force that created the fault in the first place, it is highly unlikely that you will get an earthquake on that fault.

Trying to predict earthquakes in the east is extremely problematic. Out west, the forces that produced major faults are still active, so you can pretty reliably work out where and "when" you should expect an earthquake based on what's happened in the past. In the east, most of the big earthquakes on record have been one-offs -- a big event once on a previously unknown fault, and then no more large events since. This doesn't mean they won't happen again, and some cities are taking the issue seriously. For instance, one of the largest historical earthquakes in the U.S. occurred on a fault in New Madrid, MO in the 1800's. St. Louis is actively retrofitting buildings and bridges to prepare for the possibility of a repeated large event on this fault. Memphis, on the other hand, has been pretty nonchalant about the whole thing.

Another cause of earthquakes is residual strain in rock. It's hard to imagine, but rock has some inherent "springiness" to it. It may have been squeezed or stretched a million years ago, and that strain is stored in the rock. At any time in the future, that strain can be released in the form of an earthquake. An example of this is regular seismicity in the northeast and along the U.S.-Canada border: this area has repeatedly been covered by huge glaciers in the past, and the weight of all of that ice actually compressed the rock beneath it. Very gradually, over tens of thousands of years, the rock is slowly expanding now that all that weight is gone, and sometimes that expansion produces an earthquake.

The eastern seaboard and Appalachia have stored strain from a number of significant events over the past hundreds of million of years, and these types of small events are pretty common and not a cause for alarm. The big threats in the east are the unknowns: periodic large events could occur on fault systems that have not been identified, and if the period between events is greater than a few hundred years, we have no records to know if such a faulting cycle even exists. Going back to the New Madrid fault system, we know it exists and that it is active, but if the whopper that hit the area in the mid-1800's had hit a hundred years earlier, we would probably have no idea today that it can produce a quake as large as it can because there would be little historical record of the event.

burninater
10858
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burninater 03/22/11 - 12:22 pm
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CRRT, that would be true if

CRRT, that would be true if the forces that drive earthquakes stopped 4.5 billion years ago. But they didn't. The main causes of EQ's are heat and gravity. Gravity appears to be an eternal, and heat is still actively being produced within the earth through the decay of radioactive material and as a result of phase changes in earth materials.

Crime Reports and Rewards TV
33
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Crime Reports and Rewards TV 03/22/11 - 03:11 pm
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A bedazzled scientist

A bedazzled scientist proposes that Earth's core holds a uranium-based nuclear reactor. ... geology.about.com/od/wildgeotheories/a/nuclearcore.htm

This “theory” was put forth because every scientist KNOWS the core should not still be molten IF the earth is 4.5 billion years old. Due to all the proof PROVING an earth far too young for evolution they had to come up with this to support long ages. There is NO sign of a nuclear reactor or fission being able to function in a MOLTEN core. All facts PROVE the earth is NOT 4.5 billion yr s old. Real Science debunked long ages and this is why the long agers are feeding you the nuclear core scam just like they fed you the Global warming scam. The SUN has been warming up for over 300 yrs this is fact. The earth is being warmed by the ever warming sun along with other planets around us=FACT. But global warming is not caused by man and the earth is not 4.5 billion yrs old nor is our molten core a nuclear reactor of any sort. It's just still hot from creation but cooling down at the rate one would expect from creation to now. The radiation necessary to keep our core molten has NEVER been detected if nuclear fission could function in molten lava which it can't. Lava is NOT RADIACTIVE. Every time we have these earthquakes and volcanic eruptions that SHOULD NOT BE Happening IF earth is 4.5 billion yrs old new theories are launched as to why this is still being observed when there is NO WAY a molten core can still be there if the earth is as old as they say it is…. That’s why they have to keep scamming you guy’s cause that’s how they defraud the taxpayer to make their money.

Emerydan
10
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Emerydan 03/22/11 - 03:08 pm
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Now just think of all the

Now just think of all the trailers that have to be put back on their cinder blocks!

burninater
10858
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burninater 03/22/11 - 03:38 pm
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CRRT: 1) The inner core of

CRRT: 1) The inner core of the earth is believed to be solid, not molten. The outer core is believed to be liquid. 2) Nuclear fission occurs at ANY temperature -- radioactive decay is a process independent of external factors. Nuclear reactors are designed to SLOW a natural process, making it controllable, not to cause the reaction to occur. 3) Lava can have radioactive isotopes in it, making it radioactive. They are usually not concentrated though, so the radioactivity in any one location is minor.

If you don't believe nuclear reactions can occur at high temperatures, I have a cold Sun to sell you ...

seenitB4
111991
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seenitB4 03/23/11 - 07:26 am
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SOO ok wise ones.....where is

SOO ok wise ones.....where is it safe from earthquakes??

seenitB4
111991
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seenitB4 03/23/11 - 07:29 am
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Maybe the Indians had it

Maybe the Indians had it right after all...it's a lot easier to move a teepee to another location.

burninater
10858
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burninater 03/23/11 - 06:15 pm
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Seenit, you're pretty safe

Seenit, you're pretty safe right where you are. The simple presence of faults/earthquakes doesn't mean you face a serious risk of a major earthquake. Earthquake magnitude is a direct function of the specific fault that causes the earthquake. If you think of a fault as a weapon, faults range anywhere from popguns to nuclear warheads. Most of the activity in the East is caused by popguns, and a popgun simply cannot create a nuclear explosion. HOWEVER! Identifying faults in the East can be extremely difficult, because most of them are buried under tens to hundreds of feet of sediment. We know that Charleston has something active near it, and it's a lot worse than a popgun. Does something similar exist somewhere else that we don't know about? Probably. But the chance that it's near you, and that it'll go off in our lifetime, are probably slim to none. You are much wiser to worry about getting killed in a car accident than worrying about earthquakes in this area.

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