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This event has been reviewed by a seismologist.
Date-Time Wednesday, March 16, 2011 at 17:36:56 UTC
Wednesday, March 16, 2011 at 01:36:56 PM at epicenter
Location 45.609°N, 74.619°W
Depth 0 km (~0 mile) (poorly constrained)
Region ONTARIO-QUEBEC BORDER REGION, CANADA
Distances 50 km (31 miles) W (262°) from Mirabel, Qu�bec, Canada
52 km (32 miles) WSW (249°) from Saint-J�r�me, Qu�bec, Canada
54 km (34 miles) NW (316°) from Salaberry-de-Valleyfield, Qu�bec, Canada
69 km (43 miles) W (276°) from Laval, Qu�bec, Canada
82 km (51 miles) W (277°) from Montr�al, Qu�bec, Canada
Location Uncertainty horizontal +/- 2.5 km (1.6 miles); depth +/- 5.3 km (3.3 miles)
Parameters NST= 18, Nph= 31, Dmin=78.7 km, Rmss=0.89 sec, Gp=187°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=a
Source New England Seismic Network (NESN):
Weston Observatory of Boston College
Event ID ne00001232
Update: The Montreal Gazette now reports that, “Environment Minister Pierre Arcand did not bend to opposition demands for a shale-gas moratorium. …Instead of a full stop, Arcand indicated the government is just slowing down, buying time, with the goal of pushing ahead with what it conceives as safe shale-gas extraction. (Arcand) set a ‘June or July’ deadline for a new committee of experts he will name to study the unknown hazards of fracking… After announcing no new drilling and fracking only for ’scientific’ purposes, Arcand turned around and said that continued fracking would be allowed at the 18 shale-gas wells in the province that have already been fracked, and new fracking could go ahead at another 13 wells that have been drilled but not yet fracked. …New regulations to tighten control over shale-gas exploration would be adopted quickly, Arcand said…”
New Orleans independent geologist Jack M. Reed believes the origin of the earthquakes lies beneath the Gulf of Mexico.
That's not all.
Reed, a retired Texaco geologist-geophysicist who has been studying the region's geology for over 40 years, says the accepted theory of a quiet geologic evolution of the Gulf of Mexico Basin is fundamentally flawed and needs to be revised.
According to him, the Gulf was and is tectonically active -- and it is the likely origin for not only the New Madrid seismic activity, but also for the Middleton Place-Summerville seismic zone near Charleston, S.C.
"For all the years I have worked the Gulf of Mexico Basin I have been forced to accept the 'passive' Gulf formation theory, which holds that the only movement in the basin is updip sedimentary loading that moved the salt southward," Reed said. "But there is little evidence to support this theory, and it doesn't fit what is observed geologically or geophysically.
Reed, over the years, has gathered evidence that supports plate motion in the Gulf basin. Thick salt and sedimentary sequences in the basin mask this tectonic motion, but there is enough basin and peripheral evidence to show plate readjustment is occurring -- evidence, he says, in the form of volcanics, earthquakes and rift zones that are accompanied by magnetic, refraction, seismic and gravity data.