Pan-African Ocean
E226604
The Pan-African Ocean was a vast ancient ocean that surrounded the supercontinent Pannotia during the late Precambrian era.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pan-African Ocean canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2026720 — 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: Pan-African Ocean Context triple: [Pannotia, oceanSurrounding, Pan-African Ocean]
-
A.
Indian Ocean
The Indian Ocean is the world’s third-largest ocean, lying between Africa, Asia, Australia, and the Southern Ocean, and serving as a major route for global trade and maritime activity.
-
B.
Iapetus Ocean
The Iapetus Ocean was an ancient Paleozoic ocean that once separated the paleocontinents of Laurentia, Baltica, and Avalonia before closing during the formation of the supercontinent Pangaea.
-
C.
Tethys Ocean
The Tethys Ocean was a vast ancient ocean that existed between the supercontinents of Gondwana and Laurasia, playing a key role in Mesozoic plate tectonics and marine evolution.
-
D.
World Ocean
The World Ocean is the interconnected system of Earth's major oceanic divisions that together form a single, continuous body of saltwater covering most of the planet's surface.
-
E.
South Pacific Ocean
The South Pacific Ocean is the vast southern portion of the Pacific, encompassing numerous island nations and territories and known for its remote archipelagos, rich marine biodiversity, and significant climatic influence.
- 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: Pan-African Ocean Target entity description: The Pan-African Ocean was a vast ancient ocean that surrounded the supercontinent Pannotia during the late Precambrian era.
-
A.
Indian Ocean
The Indian Ocean is the world’s third-largest ocean, lying between Africa, Asia, Australia, and the Southern Ocean, and serving as a major route for global trade and maritime activity.
-
B.
Iapetus Ocean
The Iapetus Ocean was an ancient Paleozoic ocean that once separated the paleocontinents of Laurentia, Baltica, and Avalonia before closing during the formation of the supercontinent Pangaea.
-
C.
Tethys Ocean
The Tethys Ocean was a vast ancient ocean that existed between the supercontinents of Gondwana and Laurasia, playing a key role in Mesozoic plate tectonics and marine evolution.
-
D.
World Ocean
The World Ocean is the interconnected system of Earth's major oceanic divisions that together form a single, continuous body of saltwater covering most of the planet's surface.
-
E.
South Pacific Ocean
The South Pacific Ocean is the vast southern portion of the Pacific, encompassing numerous island nations and territories and known for its remote archipelagos, rich marine biodiversity, and significant climatic influence.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
ancient ocean
ⓘ
paleo-ocean ⓘ |
| associatedWith | Pan-African orogeny ⓘ |
| closedBy | continental collisions during Pan-African orogeny ⓘ |
| closedDuring | assembly of Gondwana ⓘ |
| contained |
mid-ocean ridges
ⓘ
subduction zones ⓘ |
| disappearedBy | early Paleozoic ⓘ |
| existedDuring |
Neoproterozoic Eon
ⓘ
linked to:
Neoproterozoic Era
late Precambrian ⓘ |
| followedBy |
Iapetus Ocean
ⓘ
Paleo-Tethys Ocean ⓘ |
| geologicalAgeMa | about 650–540 million years ago ⓘ |
| geologicalContext | Neoproterozoic supercontinent assembly and breakup ⓘ |
| knownFrom |
geochronological data of Neoproterozoic rocks
ⓘ
paleogeographic reconstructions ⓘ structural geology of Pan-African belts ⓘ |
| linkedTo |
formation of Neoproterozoic accretionary belts
ⓘ
growth of Gondwanan continental crust ⓘ |
| location | global, between fragments of Rodinia and later Pannotia margins ⓘ |
| namedAfter | Pan-African orogeny ⓘ |
| openedAfter | fragmentation of Rodinia ⓘ |
| partOf |
Neoproterozoic plate-tectonic system
ⓘ
Precambrian supercontinent cycle ⓘ |
| precededBy | Mirovia Ocean ⓘ |
| relatedConcept |
Gondwana
ⓘ
Pannotia ⓘ Rodinia ⓘ
linked to:
supercontinent Rodinia
|
| relatedTo | breakup of Rodinia ⓘ |
| surrounded |
Pannotia
ⓘ
supercontinent Pannotia ⓘ |
| tectonicSetting | global ocean around Pannotia ⓘ |
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: Pan-African Ocean Description of subject: The Pan-African Ocean was a vast ancient ocean that surrounded the supercontinent Pannotia during the late Precambrian era.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
supercontinent Pannotia