Posted on 04/18/2008 2:45:28 AM PDT by dinoparty
Decatur, Illinois
My wife and I just felt a very noticeable earthquake.
ROTFL!
Morgan, did you feel the quake in Indianapolis?
That was fast!! Good article, thanks.
when I hear more I will let you know. But you are probably right it more than likely just loose concrete falling. Lot’s of old “concrete overpasses” in STL.
A crew was sent out to investigate per STL news.
[i]87 posts and not one from an apocalpytikook yet. This is very refreshing.
[/i][p]
Haha!!
My personal theory has the west coast looking like crushed stone in a driveway. Quake energy doesn’t propagate as far because the interstices between the chips absorb much of it.
Here in the midwest, the basement rock isn’t nearly as fractured, so quake energy seems to propagate further. Old research into the New Madrid quakes seems to confirm this. One anecdotal account claimed that quake cracked sidewalks in Washington DC and rang church bells in Boston.
Overpass at Shaw and Kingshighway in South St. Louis City.
It is shut down to check structure as concrete chunks fell off it and it is a very old overpass bridge.
Wabash Valley Seismic Zone is where this one came from (I could not remember the name of it earlier)
-Eric
Wabash Valley Seismic Zone
Recent studies have indicated that the New Madrid Seismic Zone is not the only ‘hot spot’ for earthquakes in the Central United States. On June 18, 2002, a 5.0 magnitude earthquake struck the Evansville, Indiana with an epicenter between Mt. Vernon and West Franklin in Posey County, in an area that is part of the Wabash Valley Seismic Zone. According to the Indiana University Indiana Geological Survey, while there was minor damage associated with the earthquake, the tremor was a warning to residents of the Wabash Valley Seismic Zone that earthquakes can, and do, strike close to home.
The Wabash Valley Seismic Zone is located in Southeastern Illinois and Southwestern Indiana and it is capable of producing ‘New Madrid’ size earthquake events. Since the discovery of this seismic zone, earthquake awareness and preparedness have increased. Residents are seeing that moderate sized earthquakes are not just occuring to south, but occur right at home and can affect Illinois, Indiana, and Kentucky.
Geologists in Indiana and Illinois have found liquefaction sites and sand dikes that shows the evidence of prehistoric earthquakes in the region. By examining the size of the dikes and sediment found within the sand dikes, geologists are able to estimate the size of the earthquake it took to create the formations. In the mid-1980’s, geologist Steven Obermeier found a liquefaction formation that was estimated, through carbon dating, to be 6,100 years old. The earthquake that produced the site was estimated to be a magnitude 7.0, large enough to seriously disrupt the area known as the Wabash Valley Seismic Zone.
Current research is still turning out new evidence of historic earthquakes in the zone.
Felt it when I was leaning up against the computer table.
My first thought would have been concussion waves from a bomb.
That’s what muzzies have done to me.
They showed footage here of some old bricks that had fallen in the street in St. Louis.
I’m not Morgan, but I am in NE Indianapolis and it woke us up from a sound sleep.
I’m 40 miles out from the epicenter in Vincennes at the university, and yes I got woke up by the quake (and knocked off the couch I was sleeping on). We evacuated the dorms as a precaution, but all students are back in the dorms, no structural damage reported.
The shaking went on about 30 seconds and I swear I felt an aftershock a minute or two later for about a second.
God, I love living a building composed of cinderblocks.
Gas line break in Hide Park. (STL area)
being investigated as earthquake related
(no BS)
Bricks off a Louisville KY building. (quite a few bricks as seen on local news)
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