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EARTHQUAKES June 24, 2010

Posted by thenaturalist in Earthquakes.

A 5.0 magnitude earthquake with an epicenter located on the Quebec-Ontario border rattled Vermont on June 23, 2010. The USGS said the quake, which occurred at 1:41 p.m., was centered 33 miles northeast of Ottawa near Buckingham, Quebec, 12 miles below the Earth’s surface. Vermont State Geologist Larry Becker in Waterbury said, “We felt it here. I was sitting in my chair and started rocking back and forth.” Reports from Swanton, Huntington, Montpelier, Jay, and beyond spilled into the Burlington Free Press newsroom. Though uncommon, Vermont is not a stranger to earthquakes. Among notable earthquakes documented in Vermont:

1638: A “violent” quake, probably centered in the St. Lawrence Valley, felt throughout New England

1755: Vermonters felt a quake centered east of Cape Ann, Mass.

1867: An early morning earthquake woke people in Burlington, as well as Syracuse, N.Y., and Hamilton, Ontario.

1904: A quake centered in southeastern Maine was felt throughout New England, and New Brunswick and Nova Scotia. Chimneys damaged at Calais and Eastport, Maine, and St. Stephen, New Brunswick.

1929: A magnitude 7.2 shock in the Grand Banks of the Atlantic Ocean severed 12 submarine cables … and cracked plaster in Hartford.

1935: A magnitude 6.25 quake near Timiskaming, Quebec. Witnesses in Vermont reported shaking beds, rattling windows and dishes.

1940: Estimated magnitude 5.8, a quake near Lake Ossipee, N.H., displaced bricks on old chimneys in Bloomfield, Vt.

1952: Near Burlington, a local quake estimated at magnitude 6 cracked pavement, basement walls and a city gas main. Ground cracks observed in the North End.

1955: Another quake centered in Burlington, at magnitude 5. A new ground crack documented in North End.

1962: A western Vermont quake April 10 (magnitude 5.0) thoroughly shook the Vermont Statehouse, dislodging a support beam, weakening two beams and cracking 20 window panes.

1973: Shock from a magnitude 5.2 earthquake centered in western Maine was felt throughout New England and eastern Quebec. Residents in Canaan and Montpelier reported cracked plaster, chimneys separating from walls and road fractures.

2002: A moderately powerful earthquake centered in the Adirondack foothills 15 miles southwest of Plattsburgh, N.Y. shook Vermont and upstate New York residents awake. The quake struck at 6:50 a.m. with a magnitude of 5.1. (BFP, 6/24/10)



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