Ontong Java Plateau
E191558
The Ontong Java Plateau is one of the Earth's largest and thickest oceanic plateaus, formed by massive volcanic activity and located in the western Pacific Ocean.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Ontong Java Plateau canonical | 2 |
| Ontong Java | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1694928 — 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: Ontong Java Plateau Context triple: [southwest Pacific Ocean, contains, Ontong Java Plateau]
-
A.
Sunda Shelf
The Sunda Shelf is a vast, shallow continental shelf in Southeast Asia that underlies much of the region’s seas and connects the submerged extensions of the Malay Peninsula, Borneo, Sumatra, and Java.
-
B.
Kula Plate
The Kula Plate was an ancient oceanic tectonic plate in the northern Pacific that once subducted beneath western North America before being largely consumed.
-
C.
Vanua Levu
Vanua Levu is the second-largest island of Fiji, known for its relatively undeveloped landscapes, traditional villages, and rich marine and rainforest environments.
-
D.
New Guinea
New Guinea is the world’s second-largest island, located in the southwestern Pacific Ocean north of Australia and known for its extraordinary biodiversity and cultural diversity.
-
E.
Viti Levu
Viti Levu is the largest and most populous island of Fiji, home to the nation’s capital Suva and its main economic and transportation hubs.
- 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: Ontong Java Plateau Target entity description: The Ontong Java Plateau is one of the Earth's largest and thickest oceanic plateaus, formed by massive volcanic activity and located in the western Pacific Ocean.
-
A.
Sunda Shelf
The Sunda Shelf is a vast, shallow continental shelf in Southeast Asia that underlies much of the region’s seas and connects the submerged extensions of the Malay Peninsula, Borneo, Sumatra, and Java.
-
B.
Kula Plate
The Kula Plate was an ancient oceanic tectonic plate in the northern Pacific that once subducted beneath western North America before being largely consumed.
-
C.
Vanua Levu
Vanua Levu is the second-largest island of Fiji, known for its relatively undeveloped landscapes, traditional villages, and rich marine and rainforest environments.
-
D.
New Guinea
New Guinea is the world’s second-largest island, located in the southwestern Pacific Ocean north of Australia and known for its extraordinary biodiversity and cultural diversity.
-
E.
Viti Levu
Viti Levu is the largest and most populous island of Fiji, home to the nation’s capital Suva and its main economic and transportation hubs.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
large igneous province
ⓘ
oceanic plateau ⓘ |
| affects | regional plate tectonics in the western Pacific ⓘ |
| approximateAge |
about 120–125 million years
ⓘ
around 120 million years ⓘ |
| area |
approximately 1,900,000 square kilometers
ⓘ
approximately 1.9 million square kilometers ⓘ |
| compositionFeature |
low-K tholeiitic basalts
ⓘ
relatively homogeneous basaltic composition ⓘ |
| contains | Cretaceous pelagic sediments on top of basalts ⓘ |
| countryNearby |
Federated States of Micronesia
ⓘ
Papua New Guinea ⓘ Solomon Islands ⓘ |
| crustalStructure | multilayered basaltic crust ⓘ |
| crustType | oceanic crust ⓘ |
| drilledBy | Ocean Drilling Program ⓘ |
| elevationRelativeToSeafloor | about 2 kilometers above surrounding seafloor ⓘ |
| eruptionStyle | submarine flood basalt volcanism ⓘ |
| formationProcess |
mantle plume volcanism
ⓘ
massive volcanic activity ⓘ |
| formedBy | short-lived, high-volume magmatic event ⓘ |
| geologicalAge | Early Cretaceous ⓘ |
| hasFeature |
relatively flat top surface
ⓘ
steep margins ⓘ |
| isOneOf |
Earth’s largest oceanic plateaus
ⓘ
Earth’s thickest oceanic plateaus ⓘ |
| latitudeApprox | around 3 to 7 degrees south ⓘ |
| locatedIn |
Pacific Plate
ⓘ
western Pacific Ocean ⓘ |
| longitudeApprox | around 155 to 165 degrees east ⓘ |
| magmaticVolume | on the order of 100 million cubic kilometers ⓘ |
| mainRockType |
basalt
ⓘ
tholeiitic basalt ⓘ |
| marginType | faulted margins ⓘ |
| nearbyFeature |
Ontong Java Atoll
ⓘ
Solomon Trench ⓘ |
| overlies | normal oceanic crust ⓘ |
| partOf |
southwest Pacific Ocean
ⓘ
surface form:
Southwest Pacific region
|
| researchTopic |
large igneous province formation
ⓘ
mantle plume dynamics ⓘ oceanic plateau evolution ⓘ |
| significance |
important for understanding global environmental change in the Early Cretaceous
ⓘ
key example of a Cretaceous large igneous province ⓘ |
| subductionInteraction | partly colliding with the Solomon Islands arc system ⓘ |
| tectonicSetting | intraplate oceanic setting ⓘ |
| thickness | up to about 30 kilometers ⓘ |
| volumeRanking | one of the largest known large igneous provinces by volume ⓘ |
| waterDepth | generally 1500 to 3000 meters below sea 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: Ontong Java Plateau Description of subject: The Ontong Java Plateau is one of the Earth's largest and thickest oceanic plateaus, formed by massive volcanic activity and located in the western Pacific Ocean.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Ontong Java