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Post-glacial rebound ... intraplate earthquake was the magnitude 8 New Madrid earthquake that occurred in mid-continental US in the year 1811. Glacial loads provided ...
Isostatic depression is the sinking of large parts of the Earth's crust into the asthenosphere caused by a heavy weight placed on the Earth's surface, often glacial ice during continental glaciation. [2] Isostatic depression and isostatic rebound occur at rates of centimeters per year. Greenland is an example of an isostatically depressed region.
Forebulge collapse due to post-glacial rebound is greatest along the east coast of the United States, which lay just under the North American ice sheet. [8] As a result of forebulge collapse due to post-glacial rebound, most of the coast of the Eastern US has slowly been sinking; it is estimated that the area around the Chesapeake Bay will sink ...
Deglaciation is the transition from full glacial conditions during ice ages, to warm interglacials, characterized by global warming and sea level rise due to change in continental ice volume. [1] Thus, it refers to the retreat of a glacier , an ice sheet or frozen surface layer, and the resulting exposure of the Earth 's surface.
An example of isostatic uplift is post-glacial rebound following the melting of ice sheets. The Hudson Bay region of Canada, the Great Lakes of Canada and the United States, and Fennoscandia are currently undergoing gradual rebound as a result of the melting of ice sheets 10,000 years ago.
This region is in our day principally known as a favoured site for the observation of the phenomenon of post-glacial rebound. Most of the region was under the sea less than 10,000 years ago, after the ice sheet that blanketed it melted. But thanks to the melting of this mass of ice that had been pressing down upon it, the ground is rising year ...
The southern glacial maximums extended south to Washington state near Olympia in the west and to Spokane, the Idaho Panhandle, and much of Western Montana at the eastern glacial edge. At its eastern end the Cordilleran ice sheet merged with the Laurentide Ice Sheet at the Continental Divide , forming an area of ice that contained one and a half ...
Post-glacial rebound in the Scandinavia region resulted in a shrinking Baltic Sea. The region continues to rise, still causing weak earthquakes across Northern Europe. An equivalent event in North America was the rebound of Hudson Bay, as it shrank from its larger, immediate post-glacial Tyrrell Sea phase, to its present boundaries. [29]