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The zone stretches from Montreal to Témiscaming and from Cornwall up along the Laurentian Mountains. The scale does go all the way up to 12 for extremely intense quakes. These are thought to have formed as a result of the North American Plate sliding westward over a long-lived center of upwelling magma called the New England hotspot,[8] and is the eroded remnants of intrusive stocks. It is calculated that the impact released energy equaling 250 megatons of TNT and occurred when this area was probably covered by a shallow sea. These fractures are countless and occur in a fractal manner. Bulldozers removed debris from collapsed buildings while rescuers dismantled walls by hand. Charlevoix-Kamouraska seismic zone, Quebec, near Ile aux Lievres. 2020-09-29T20:16:11Z: M1.3 140 km S of Fort McPherson, NT. This rift valley was formed when the Earth's crust moved downward about a kilometre between two major fault zones known as the Mattawa and Petawawa faults. Newcomers — recent immigrants, refugees, undocumented workers and international students — are vital to the Canadian economy. Howe report was to call for an agreement with the federal government to backstop the insurance, banking and mortgage-lending industries from being decimated by their losses in the case of a such a disaster. The latter is the source of the French River, which drains into Lake Huron. The federal, provincial and city governments offer many resources to educate residents. Batholiths and dikes were also exposed by erosion, such as the Timber Lake, Mulock, West Arm, Powassan and Bonfield batholiths. The earthquake was felt over most of eastern Canada and northeastern U.S. Either scenario would “likely be the largest natural disaster the country has faced” and would send severe aftershocks rippling through the entire Canadian economy. Please try again. MM II is usually only noticed by sensitive or nervous people. The Ottawa-Bonnechere Graben (also known as the Ottawa Graben) is a geological structure that coincides with a 55 km (34 mi) wide topographic depression extending from near Montréal through Ottawa. Montreal was deemed especially vulnerable to seismic movement due to its population density and the type of soil. A woman reacts next to debris during rescue operations after an earthquake struck the Aegean Sea, in the coastal province of Izmir, Turkey, October 31, 2020. That two neighbours show solidarity in difficult times is more valuable than many things in life.”. Unauthorized distribution, transmission or republication strictly prohibited. MM IV: This is where the quakes get big enough that they might wake you up. This rift valley was formed when the Earth's crust moved downward about a kilometre between two major fault zones known as the Mattawa and … Coordinates: 45°34′36″N 76°54′58″W / 45.5767°N 76.9162°W / 45.5767; -76.9162, A rift valley extending from near Montréal through Ottawa in Canada, "Supracrustal Faults of the St. Lawrence rift System between Cap Tourments and Baie-Saint-Paul, Quebec", "Records of Punctuated Tectonism in Platform-Interior Graben Systems (Ontario, Canada) Far-Flung from Contemporaneous Taconic Orogenesis in the Northern Appalachians", "Background Geology of the North Bay area", "A Hundred-Million Year History of the Corner Rise and New England Seamounts", "The Monteregian Hills: Igneous Intrusions", "Geology of Gault Nature Reserve, Mont St. Hilaire", Preview of the Canadian Geographic article, https://en.wikipedia.org/w/index.php?title=Ottawa-Bonnechere_Graben&oldid=953425917, Short description is different from Wikidata, Articles with unsourced statements from February 2019, Creative Commons Attribution-ShareAlike License, This page was last edited on 27 April 2020, at 06:49. We have enabled email notifications—you will now receive an email if you receive a reply to your comment, there is an update to a comment thread you follow or if a user you follow comments. I’ll admit, living on the edge of the Ring of Fire gives me a certain complacency around learning about other earthquake zones. Because this earthquake took place before humans had the tools to effectively measure earthquakes the event is often described using the Modified Mercalli Intensity Scale. Beyond the financial barriers to food access, newcomers are regularly unable to access culturally appropriate foods or practise culturally meaningful “foodways,” such as growing, sharing and selling food among their cultural and linguistic communities.

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