Rheic Ocean
E527865
The Rheic Ocean was a Paleozoic-age ocean that once separated the ancient continents of Gondwana from Laurussia before closing during the assembly of the supercontinent Pangaea.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Rheic Ocean canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T5605102 — 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: Rheic Ocean Context triple: [Avalonia, separationOceanName, Rheic Ocean]
-
A.
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.
-
B.
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.
-
C.
Pan-African Ocean
The Pan-African Ocean was a vast ancient ocean that surrounded the supercontinent Pannotia during the late Precambrian era.
-
D.
Yoldia Sea
The Yoldia Sea was an early post-glacial brackish water stage of the Baltic basin that existed after the last Ice Age, named after the bivalve Yoldia arctica found in its sediments.
-
E.
Océan
Océan was a prominent French ship of the line that served as a flagship in major naval engagements during the age of sail.
- 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: Rheic Ocean Target entity description: The Rheic Ocean was a Paleozoic-age ocean that once separated the ancient continents of Gondwana from Laurussia before closing during the assembly of the supercontinent Pangaea.
-
A.
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.
-
B.
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.
-
C.
Pan-African Ocean
The Pan-African Ocean was a vast ancient ocean that surrounded the supercontinent Pannotia during the late Precambrian era.
-
D.
Yoldia Sea
The Yoldia Sea was an early post-glacial brackish water stage of the Baltic basin that existed after the last Ice Age, named after the bivalve Yoldia arctica found in its sediments.
-
E.
Océan
Océan was a prominent French ship of the line that served as a flagship in major naval engagements during the age of sail.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | ancient ocean ⓘ |
| age | Paleozoic ⓘ |
| boundedBy |
Gondwana to the south
ⓘ
Laurussia to the north ⓘ
linked to:
Laurussia
|
| closedDuring |
Late Paleozoic
ⓘ
assembly of Pangaea ⓘ |
| closureAssociatedWith |
Alleghanian orogeny
ⓘ
linked to:
Appalachian orogeny
Appalachian orogeny ⓘ Hercynian orogeny ⓘ
linked to:
Variscan orogeny
Variscan orogeny ⓘ |
| closureResultedIn |
Appalachian mountain belt in North America
ⓘ
linked to:
Appalachian Mountains
Variscan mountain belts in Europe ⓘ formation of Pangaea ⓘ |
| existedDuring | Paleozoic Era ⓘ |
| geologicalEvidencePreservedIn |
Appalachian–Ouachita belt
ⓘ
Variscan belt ⓘ
linked to:
European Variscan Belt
|
| knownFrom |
faunal provinciality
ⓘ
orogenic belts in Europe and North America ⓘ paleomagnetic data ⓘ sedimentary basins ⓘ |
| namedAfter | Rhea ⓘ |
| oceanicCrustSubductedBeneath |
Gondwana
ⓘ
Laurussia ⓘ |
| openedAs | back-arc basin along northern Gondwana margin ⓘ |
| openedDuring | Early Paleozoic ⓘ |
| paleogeographicSetting | between northern margin of Gondwana and southern margin of Laurussia ⓘ |
| partOf |
Paleozoic paleogeography
ⓘ
Wilson cycle of Pangaea assembly ⓘ |
| predecessorTo | Atlantic Ocean ⓘ |
| presentInRecordOf |
Europe
ⓘ
North Africa ⓘ North America ⓘ South America ⓘ |
| relatedTo |
Gondwana
ⓘ
Iapetus Ocean ⓘ Laurussia ⓘ Pangaea ⓘ
linked to:
supercontinent Pangaea
|
| separated |
Gondwana
ⓘ
Laurussia ⓘ |
| separatedContinents |
Gondwana and Laurussia
ⓘ
linked to:
Laurasia
|
| status | completely closed ⓘ |
| successorTo | Iapetus Ocean ⓘ |
| tectonicProcess |
continental collision
ⓘ
seafloor spreading ⓘ subduction ⓘ |
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: Rheic Ocean Description of subject: The Rheic Ocean was a Paleozoic-age ocean that once separated the ancient continents of Gondwana from Laurussia before closing during the assembly of the supercontinent Pangaea.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.