passive margin of Gondwana
E415303
The passive margin of Gondwana was the long, tectonically quiet continental edge of the ancient supercontinent Gondwana, where thick sedimentary sequences accumulated and from which various microcontinents, such as Avalonia, later rifted away.
All labels observed (1)
| Label | Occurrences |
|---|---|
| passive margin of Gondwana canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4145558 — 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: passive margin of Gondwana Context triple: [Avalonia microcontinent, tectonicSettingDuringRift, passive margin of Gondwana]
-
A.
Atlantic passive margin
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.
-
B.
breakup of Gondwana
The breakup of Gondwana was a major tectonic event during the Mesozoic era in which the ancient southern supercontinent fragmented into the continents and oceanic plates of the Southern Hemisphere, reshaping global geography and climate.
-
C.
Eurasian continental margin
The Eurasian continental margin is the submerged edge of the Eurasian tectonic plate, extending from its coastal shelves into the deep Arctic and Atlantic oceans and encompassing features such as the Chukchi Plateau.
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D.
West Antarctic Rift System
The West Antarctic Rift System is a major tectonic rift zone underlying much of West Antarctica, characterized by crustal extension, volcanism, and significant influence on the region’s topography and ice sheet dynamics.
-
E.
Gondwana
Gondwana was a vast ancient supercontinent in the Southern Hemisphere that included present-day South America, Africa, Antarctica, Australia, the Indian subcontinent, and the Arabian Peninsula.
- 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: passive margin of Gondwana Target entity description: The passive margin of Gondwana was the long, tectonically quiet continental edge of the ancient supercontinent Gondwana, where thick sedimentary sequences accumulated and from which various microcontinents, such as Avalonia, later rifted away.
-
A.
Atlantic passive margin
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.
-
B.
breakup of Gondwana
The breakup of Gondwana was a major tectonic event during the Mesozoic era in which the ancient southern supercontinent fragmented into the continents and oceanic plates of the Southern Hemisphere, reshaping global geography and climate.
-
C.
Eurasian continental margin
The Eurasian continental margin is the submerged edge of the Eurasian tectonic plate, extending from its coastal shelves into the deep Arctic and Atlantic oceans and encompassing features such as the Chukchi Plateau.
-
D.
West Antarctic Rift System
The West Antarctic Rift System is a major tectonic rift zone underlying much of West Antarctica, characterized by crustal extension, volcanism, and significant influence on the region’s topography and ice sheet dynamics.
-
E.
Gondwana
Gondwana was a vast ancient supercontinent in the Southern Hemisphere that included present-day South America, Africa, Antarctica, Australia, the Indian subcontinent, and the Arabian Peninsula.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
geological feature
ⓘ
passive continental margin ⓘ |
| associatedWith |
Avalonian–Cadomian belt
ⓘ
Gondwanan rifted margins ⓘ Iapetus Ocean opening ⓘ Rheic Ocean opening ⓘ |
| boundedBy |
Gondwana interior
ⓘ
proto-oceanic basins ⓘ |
| characterizedBy |
long-lived subsidence
ⓘ
passive rifting ⓘ thick sedimentary sequences ⓘ |
| developedDuring |
Neoproterozoic Era
ⓘ
surface form:
Neoproterozoic
Paleozoic NERFINISHED ⓘ early Mesozoic ⓘ |
| developedFrom | Gondwana crust ⓘ |
| followedBy | breakup of Gondwana ⓘ |
| hasEconomicResource |
hydrocarbon-bearing basins
ⓘ
potential mineral deposits ⓘ |
| hasLithology |
carbonate platforms
ⓘ
marine shelf sediments ⓘ thick siliciclastic sequences ⓘ turbidites ⓘ |
| hasProcess |
continental breakup
ⓘ
rifting ⓘ sedimentary basin formation ⓘ thermal subsidence ⓘ |
| hasTectonicSetting | tectonically quiet continental edge ⓘ |
| locatedIn |
paleo-Pacific realm
ⓘ
paleo-Tethys realm ⓘ southern hemisphere ⓘ |
| partOf | Gondwana ⓘ |
| playsRoleIn |
assembly of Pangea
ⓘ
evolution of early Paleozoic oceans ⓘ formation of circum-Atlantic margins ⓘ |
| precededBy | active continental margin of Gondwana ⓘ |
| reconstructedFrom |
Peri-Gondwanan terranes
ⓘ
orogenic belts around Gondwana ⓘ paleomagnetic data ⓘ stratigraphic correlations ⓘ |
| sourceOf |
Avalonia
ⓘ
Cadomia-related microcontinents ⓘ Carolina Slate Belt ⓘ
surface form:
Carolina terrane
Peri-Gondwanan terranes ⓘ |
| studiedIn |
paleogeography of Gondwana
ⓘ
plate tectonics ⓘ |
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: passive margin of Gondwana Description of subject: The passive margin of Gondwana was the long, tectonically quiet continental edge of the ancient supercontinent Gondwana, where thick sedimentary sequences accumulated and from which various microcontinents, such as Avalonia, later rifted away.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.