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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Glacial Lake Iroquois canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7475012 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Glacial Lake Iroquois Context triple: [Laurentide Ice Sheet, notableProglacialLake, Glacial Lake Iroquois]
-
A.
Tioga Lake
Tioga Lake is a high-elevation alpine lake in the Sierra Nevada of California, just east of Yosemite National Park, known for its scenic mountain views and outdoor recreation.
-
B.
Upper St. Regis Lake
Upper St. Regis Lake is a scenic Adirondack lake in New York known for its historic great camps, boating, and tranquil natural setting.
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C.
Oneida Lake
Oneida Lake is a large, shallow lake in central New York known for its recreational fishing, boating, and role as an important link in the region’s waterways.
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D.
Chautauqua Lake
Chautauqua Lake is a long, narrow glacial lake in western New York known for recreation, fishing, and its proximity to the historic Chautauqua Institution.
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E.
Great Sacandaga Lake
Great Sacandaga Lake is a large man-made reservoir in New York’s Adirondack region, popular for boating, fishing, and lakeside recreation.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Glacial Lake Iroquois Target entity description: 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.
-
A.
Tioga Lake
Tioga Lake is a high-elevation alpine lake in the Sierra Nevada of California, just east of Yosemite National Park, known for its scenic mountain views and outdoor recreation.
-
B.
Upper St. Regis Lake
Upper St. Regis Lake is a scenic Adirondack lake in New York known for its historic great camps, boating, and tranquil natural setting.
-
C.
Oneida Lake
Oneida Lake is a large, shallow lake in central New York known for its recreational fishing, boating, and role as an important link in the region’s waterways.
-
D.
Chautauqua Lake
Chautauqua Lake is a long, narrow glacial lake in western New York known for recreation, fishing, and its proximity to the historic Chautauqua Institution.
-
E.
Great Sacandaga Lake
Great Sacandaga Lake is a large man-made reservoir in New York’s Adirondack region, popular for boating, fishing, and lakeside recreation.
- F. None of above. chosen
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 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Glacial Lake Iroquois Description of subject: 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.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Laurentide Ice Sheet