Glacial Lake Iroquois

E671787

Glacial Lake Iroquois was a large prehistoric proglacial lake that occupied and extended beyond the present-day Lake Ontario basin during the retreat of the last Ice Age glaciers.

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Statements (46)

Predicate Object
instanceOf former lake
proglacial lake
associatedWith St. Lawrence River valley deglaciation
retreat of ice margin north of Lake Ontario basin
ceasedToExistDueTo isostatic rebound
ceasedToExistDueTo opening of St. Lawrence River outlet
createdLandform Iroquois shoreline
beach ridges
delta deposits
wave-cut terraces
drainedInto Atlantic Ocean NERFINISHED
drainedThrough Hudson River valley NERFINISHED
evidenceFoundIn fossil shorelines
glaciolacustrine sediments
raised beaches
extendedBeyond present-day Lake Ontario shoreline
followedBy lower-level post-Iroquois lake stages
formedDuring Late Pleistocene
last glacial period
formedDuringRetreatOf Laurentide Ice Sheet NERFINISHED
hadOutlet Hudson River valley NERFINISHED
hasApproximateAge late Wisconsinan glaciation
influencedDevelopmentOf regional drainage patterns around Lake Ontario
sediment distribution in Lake Ontario basin
soils around Lake Ontario basin
largerThan modern Lake Ontario
locatedIn New York State NERFINISHED
North America
Ontario
St. Lawrence Lowlands region NERFINISHED
present-day Lake Ontario basin
namedAfter Iroquois people NERFINISHED
partOf Great Lakes glacial lake sequence NERFINISHED
precededBy earlier proglacial lakes in Ontario basin
predecessorOf Lake Ontario NERFINISHED
shorelineRemnantVisibleAt Niagara Escarpment areas NERFINISHED
Rochester, New York area NERFINISHED
Scarborough Bluffs NERFINISHED
Toronto, Ontario NERFINISHED
studiedInDiscipline Quaternary geology
geomorphology
glacial geology
successor early Lake Ontario stages
waterLevelControlledBy ice margin of Laurentide Ice Sheet
southern outlet elevation
waterLevelHigherThan present Lake Ontario level

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

Laurentide Ice Sheet in North America notableProglacialLake Glacial Lake Iroquois
subject surface form: Laurentide Ice Sheet