The Laurentide Ice Sheet over Hudson Bay grew about 1.75 miles thick. As the ice melted, land around Hudson Bay rose by roughly 2,000 feet and continues to rise. The video interprets the wider spacing of higher shorelines as evidence that uplift was faster early in the postglacial period. It argues that the rise occurred in discontinuous pulses and proposes that each pulse triggered earthquakes.
Video argues Hudson Bay’s 2,000-foot rebound came in pulses
Key facts
- The Laurentide Ice Sheet over Hudson Bay reached about 1.75 miles thick at its maximum.
- After deglaciation, land around Hudson Bay rose by roughly 2,000 feet and continues to rise.
- The video interprets the wider spacing of higher shorelines as evidence that uplift was faster early in the postglacial period.
- The video argues that uplift occurred in discontinuous pulses and proposes that each pulse triggered earthquakes.
Sources
Ontario: The Geology of Rising Land - Isostatic Reboundontariobeneathourfeet.com
That land along the southern coast of Hudson Bay coast is rising at about 1 to 1.3 meters (3.4 to 4.3 feet) per hundred years. Farther south along James Bay, ...
Collapse of the Hudson Bay ice center and glacio-isostatic ...pubs.geoscienceworld.org
Hudson Bay consistent with the rebound history of the Ottawa Islands requires collapse of the central dome of the Laurentide Ice Sheet between ...
Why is relative sea-level falling in Hudson Bay?earthscience.stackexchange.com
Tyrrell Seaen.wikipedia.org
When the Tyrrell Sea "became" Hudson Bay is difficult to define, as Hudson Bay is still shrinking from isostatic rebound.
Postglacial reboundantarcticglaciers.org
The land beneath the former ice sheets, e.g. around Hudson Bay and central Scandinavia, is still rising by over a centimetre a year [3, 4], while those regions ...
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