Atlantic passive margin
E169827
The Atlantic passive margin is a tectonically quiet continental edge along the Atlantic Ocean characterized by broad continental shelves, thick sedimentary deposits, and a lack of major active plate boundaries or significant seismic and volcanic activity.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Atlantic passive margin canonical | 2 |
| Atlantic continental margin of North America | 1 |
| Atlantic continental shelf | 1 |
| Greenland continental margin | 1 |
| Norwegian continental margin | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1487173 — 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: Atlantic passive margin Context triple: [Bahama Banks, geologicalSetting, Atlantic passive margin]
-
A.
Pacific margin of the Americas
The Pacific margin of the Americas is the tectonically active western edge of North and South America, characterized by subduction zones, mountain-building, and frequent earthquakes and volcanism along the Pacific Ocean.
-
B.
Newfoundland and Labrador shelf
The Newfoundland and Labrador shelf is a broad, shallow marine region off eastern Canada known for its cold waters, rich fisheries, and influence on North Atlantic ocean circulation and ecosystems.
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C.
Mid-Atlantic Bight of the Atlantic Ocean
The Mid-Atlantic Bight of the Atlantic Ocean is a broad coastal region off the eastern United States, stretching roughly from Cape Cod to Cape Hatteras and characterized by its shallow continental shelf and productive marine ecosystems.
-
D.
Atlantic coast
The Atlantic coast is the long oceanic shoreline where the Atlantic Ocean meets the bordering continents of Africa, Europe, and the Americas.
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E.
Atlantic coast of North America
The Atlantic coast of North America is the eastern seaboard of the continent, stretching from the Canadian Maritimes down through the United States to Florida and the Gulf of Mexico, and historically serving as a major corridor for exploration, trade, and colonization.
- 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: Atlantic passive margin Target entity description: The Atlantic passive margin is a tectonically quiet continental edge along the Atlantic Ocean characterized by broad continental shelves, thick sedimentary deposits, and a lack of major active plate boundaries or significant seismic and volcanic activity.
-
A.
Pacific margin of the Americas
The Pacific margin of the Americas is the tectonically active western edge of North and South America, characterized by subduction zones, mountain-building, and frequent earthquakes and volcanism along the Pacific Ocean.
-
B.
Newfoundland and Labrador shelf
The Newfoundland and Labrador shelf is a broad, shallow marine region off eastern Canada known for its cold waters, rich fisheries, and influence on North Atlantic ocean circulation and ecosystems.
-
C.
Mid-Atlantic Bight of the Atlantic Ocean
The Mid-Atlantic Bight of the Atlantic Ocean is a broad coastal region off the eastern United States, stretching roughly from Cape Cod to Cape Hatteras and characterized by its shallow continental shelf and productive marine ecosystems.
-
D.
Atlantic coast
The Atlantic coast is the long oceanic shoreline where the Atlantic Ocean meets the bordering continents of Africa, Europe, and the Americas.
-
E.
Atlantic coast of North America
The Atlantic coast of North America is the eastern seaboard of the continent, stretching from the Canadian Maritimes down through the United States to Florida and the Gulf of Mexico, and historically serving as a major corridor for exploration, trade, and colonization.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
passive continental margin
ⓘ
tectonic feature ⓘ |
| associatedWith | rifting of Pangaea ⓘ |
| boundaryType | passive ⓘ |
| contrastsWith | Pacific active margin ⓘ |
| depositionalProcesses |
river-derived sedimentation
ⓘ
turbidity currents ⓘ |
| developedDuring |
Jurassic period
ⓘ
Mesozoic Era ⓘ
surface form:
Mesozoic era
|
| erosionalProcesses | wave action ⓘ |
| extendsAlong |
eastern margin of North America
ⓘ
eastern margin of South America ⓘ parts of the Antarctic margin ⓘ southern margin of Greenland ⓘ western margin of Africa ⓘ western margin of Europe ⓘ |
| formsAlong |
divergent plate boundary
ⓘ
ocean-continent transition ⓘ |
| hasCharacteristic |
broad continental shelf
ⓘ
lack of major active plate boundaries ⓘ low seismic activity ⓘ low volcanic activity ⓘ tectonically quiet ⓘ thick sedimentary deposits ⓘ |
| hasComponent |
continental rise
ⓘ
continental shelf ⓘ continental slope ⓘ |
| hasMorphology | gentle seaward slope ⓘ |
| hasSeafloorFeature |
continental rise drifts
ⓘ
shelf-edge deltas ⓘ submarine canyons ⓘ |
| isImportantFor |
continental climate modulation
ⓘ
fisheries ⓘ petroleum exploration ⓘ |
| isSiteOf |
large submarine fans
ⓘ
major hydrocarbon basins ⓘ significant marine sediment accumulation ⓘ |
| locatedOnCoastOf | Atlantic Ocean ⓘ |
| overlies | thinned continental crust ⓘ |
| plateBoundaryActivity | minimal ⓘ |
| sedimentaryCoverThickness | up to several kilometers ⓘ |
| studiedInDiscipline |
marine geology
ⓘ
plate tectonics ⓘ sedimentology ⓘ |
| subsidenceMechanism | lithospheric cooling ⓘ |
| tectonicSetting | post-rift thermal subsidence ⓘ |
| typicalShelfWidth | hundreds of kilometers in places ⓘ |
| underlainBy | oceanic crust of the Atlantic basin ⓘ |
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: Atlantic passive margin Description of subject: The Atlantic passive margin is a tectonically quiet continental edge along the Atlantic Ocean characterized by broad continental shelves, thick sedimentary deposits, and a lack of major active plate boundaries or significant seismic and volcanic activity.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Greenland continental margin
this entity surface form:
Norwegian continental margin
this entity surface form:
Atlantic continental shelf
this entity surface form:
Atlantic continental margin of North America