Laurentide Ice Sheet in North America

E176607

Pleistocene glaciation feature continental ice sheet

The Laurentide Ice Sheet in North America was a massive continental glacier that covered much of Canada and parts of the northern United States during the last Ice Age, profoundly shaping the region’s landscapes and climate.

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All labels observed (3)

Label	Occurrences
Laurentide Ice Sheet	6
Laurentide Ice Sheet in North America canonical	1
Laurentide Ice Sheet meltwater system	1

Statements (51)

Predicate	Object
instanceOf	Pleistocene glaciation feature ⓘ continental ice sheet ⓘ
beganRetreating	after the Last Glacial Maximum ⓘ
centerOfMass	Hudson Bay region ⓘ
continent	North America ⓘ
coveredRegion	Alberta ⓘ Great Lakes region ⓘ Hudson Bay region ⓘ Labrador ⓘ Manitoba ⓘ Maritime Provinces ⓘ surface form: Maritime Provinces of Canada Midwestern United States ⓘ New England ⓘ Ontario ⓘ Quebec, Canada ⓘ surface form: Quebec Saskatchewan ⓘ most of Canada ⓘ northern United States ⓘ parts of the Rocky Mountain foothills ⓘ parts of the northern Great Plains ⓘ
formedFeature	Canadian Shield glacial scouring ⓘ Great Lakes ⓘ Hudson Bay drainage basin ⓘ surface form: Hudson Bay basin drumlins ⓘ eskers ⓘ kettle lakes ⓘ moraines across northern United States ⓘ outwash plains ⓘ proglacial lakes ⓘ
geologicPeriod	Pleistocene epoch ⓘ surface form: Pleistocene
influencedClimate	altered atmospheric circulation patterns ⓘ lowered regional temperatures in North America ⓘ
influencedSeaLevel	contributed to global sea-level fall during glacial maximum ⓘ
isostaticEffect	caused crustal depression beneath ice load ⓘ led to postglacial isostatic rebound in Canada ⓘ
largelyDisappearedBy	about 7,000 to 6,000 years ago ⓘ
lastGlacialMaximumAge	about 26,000 to 19,000 years ago ⓘ
maximumExtent	reached as far south as Long Island ⓘ reached as far south as northern Pennsylvania ⓘ reached as far south as present-day New York City region ⓘ reached as far south as the Ohio River valley in some lobes ⓘ
meltwaterEffect	contributed to meltwater pulses into the North Atlantic ⓘ contributed to rapid sea-level rise during deglaciation ⓘ likely influenced events such as the Younger Dryas cooling ⓘ
notableProglacialLake	Lake Agassiz basin ⓘ surface form: Glacial Lake Agassiz Glacial Lake Iroquois ⓘ Lake Missoula basin ⓘ surface form: Glacial Lake Missoula
scientificDiscipline	Quaternary science ⓘ surface form: studied in Quaternary geology studied in glaciology ⓘ studied in paleoclimatology ⓘ
thickness	over 3 kilometers in some areas ⓘ