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The earthquake originated in an area called the Ottawa River Valley, where huge plates that make up the continent sometimes slip.
The quake likely was caused by a process called "post-glacial rebound," said Russel Pysklywec, a University of Toronto geologist who said he felt the quake and immediately knew what he was feeling.
"About 10,000 years ago there were glaciers covering us. That ice subsequently melted and the plates are now rebounding upward," Mr. Pysklywec said. "Normally those stresses are relaxed fairly quietly."
Originally posted by jaynkeel
Live on the Niagara Escarpment right on a fault in western N.Y. . We felt nothing, yet many places around here claim to have felt shaking. I am patiently sitting here waiting for some more action, we got cheated. I have never felt an earthquake before as long as it's little and no damage results I think it would be neat to expirence one.
Originally posted by darkelf
reply to post by chopperdudep
Originally posted by chopperdudep
First off, I've always just lurked here and read the posts without joining or responding, but today I felt this quake and that quickly inspired me to become a little more active.
I live near Buffalo,NY and i felt the quake around 1:45, surprisingly quick, considering other people felt it in NJ up to a half hour later. Just figured I'd add my .02$
Hi neighbor! Could you be a little more specific? I was about a mile west of the airport and I didn't feel anything. You don't have to give your town, just a general direction. Like north or north east of the city.
[edit on 6/23/2010 by darkelf]
Originally posted by robbinsj
Originally posted by alysha.angel
spotted it a min ago on equake,
i have one question IT IS NORMAL FOR QUAKES THIS SIZE TO HIT THAT AREA?
Absolutly not, just called my friend who has lived there in Qubec her hole life and this is the first she has felt. Freaked her out and nocked out her window AC unit.
Researchers warn of earthquake --
Researchers warn Southern Ontario may face earthquakes WATERLOO, Ont.
-- If a controversial theory put forth by a team of researchers studying seismic activity in Lake Ontario proves correct, Southern Ontario is more earthquake- prone than was previously believed.
"It's a fairly highly populated area, so it introduces an element of risk which didn't exist before in the minds of people," says Prof. Richard Thomas, head of the research team and director of the Waterloo Centre for Groundwater Research based at the University of Waterloo. Scans of the bottom of Lake Ontario conducted during searches for downed aircraft revealed three previously undocumented features. Using that data and studies of their own, the research team identified the features as the result of tectonic activity due to a fault line. The three features, known as pop-ups, plumose structures and dark linear patterns, are located in western Lake Ontario. A pop-up is a ridge with a crack at the top, formed when the bedrock fractures because of compressional forces in the crust. A plumose structure is several kilometres long and looks like a feather etched into the lake bottom. The dark linear patterns are believed to be due to natural gas coming up through the rocks into the bottom sediments. Interestingly enough, says Thomas, the features all occur on the same line going through Burlington to Toronto. "In 1987 and 1988, there were two earthquakes recorded right on that line, which were about magnitude 3.5 (on the Richter scale). So there is earthquake evidence to suggest that the interpretation of these features is correct. "This indicates a major fault structure occurring in that part of the lake. . . . What it indicates is that there is a greater likelihood of a significant earthquake taking place than was originally believed." Earthquakes occurring in the Great Lakes region were thought to be in response to crustal rebound caused by the removal of ice from the last ice age. "Now, crustal rebound is taking place, but if you look at the pattern, it's not random," Thomas says. "The pattern would suggest that it's following a quite distinct orientation." Additional work has revealed faulting in the south- eastern part of Lake Ontario. The scientists are coming to believe that Lake Ontario and possibly Lake Erie lie on an extension of the well-known St. Lawrence fault system. The growing realization that fault lines could occur in the middle of a continent has led to a new science called intra-plate tectonics. "These are (earthquake) areas occurring in the middle of plates. The traditional belief was that all activity occurred on (continental) plate margins, where they collide or are in motion. They (mid- continental faults) are basically resulting from the various pressures induced on the plate because they're in motion, and these are lines of weakness which are currently being re- activated."
Originally posted by ModernAcademia
I felt this earthquake in downtown montreal
Here's something interesting though, it only affected structures....
but... the sidewalk is a structure though, so is the road
Everything that I spoke to that felt it were in a building, and everyone outside didn't feel it
I am talking about 100% ratio here, 100% of people outside that I spoke to did not feel it.
How is that possible?
Originally posted by snowspirit
Even though the epicenter was in Canada, I wonder if it was connecting with the New Madrid fault line that runs down the Mississippi? It was felt a long way down into the states, it seems.