Mariana Trough
E288645
The Mariana Trough is a back-arc basin in the western Pacific Ocean formed by seafloor spreading behind the Mariana subduction zone.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mariana Trough canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2686547 — 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: Mariana Trough Context triple: [Mariana subduction zone, associatedWith, Mariana Trough]
-
A.
Timor Trough
Timor Trough is a deep oceanic trench south of the island of Timor that marks a major tectonic boundary between the Australian and Eurasian plates.
-
B.
Fiji Basin
The Fiji Basin is a deep oceanic basin in the South Pacific characterized by complex seafloor topography and active tectonic and volcanic processes.
-
C.
Cayman Trough
The Cayman Trough is a deep undersea trench and tectonic plate boundary in the western Caribbean, known as the deepest point in the Caribbean Sea.
-
D.
Norwegian Trench
The Norwegian Trench is a deep submarine valley off the coast of Norway, notable for its steep sides and significant depth compared to the surrounding seabed.
-
E.
Havre Trough
Havre Trough is a back-arc basin and seafloor spreading center located between the Kermadec volcanic arc and the Colville Ridge in the southwest Pacific.
- 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: Mariana Trough Target entity description: The Mariana Trough is a back-arc basin in the western Pacific Ocean formed by seafloor spreading behind the Mariana subduction zone.
-
A.
Timor Trough
Timor Trough is a deep oceanic trench south of the island of Timor that marks a major tectonic boundary between the Australian and Eurasian plates.
-
B.
Fiji Basin
The Fiji Basin is a deep oceanic basin in the South Pacific characterized by complex seafloor topography and active tectonic and volcanic processes.
-
C.
Cayman Trough
The Cayman Trough is a deep undersea trench and tectonic plate boundary in the western Caribbean, known as the deepest point in the Caribbean Sea.
-
D.
Norwegian Trench
The Norwegian Trench is a deep submarine valley off the coast of Norway, notable for its steep sides and significant depth compared to the surrounding seabed.
-
E.
Havre Trough
Havre Trough is a back-arc basin and seafloor spreading center located between the Kermadec volcanic arc and the Colville Ridge in the southwest Pacific.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
back-arc basin
ⓘ
geological feature ⓘ oceanic basin ⓘ |
| associatedWith |
Izu–Bonin–Mariana subduction system
ⓘ
linked to:
Izu–Bonin–Mariana Trench system
Mariana Arc ⓘ
linked to:
Mariana Island Arc
|
| behind |
Mariana Trench
ⓘ
Mariana subduction zone ⓘ |
| boundaryOf |
Pacific Plate
ⓘ
Philippine Sea Plate ⓘ |
| floorType | oceanic crust ⓘ |
| formedBy | seafloor spreading ⓘ |
| geologicalProcess | extension of overriding plate ⓘ |
| hasFeature |
hydrothermal vent fields
ⓘ
rifted arc crust ⓘ spreading ridge ⓘ transform faults ⓘ volcanic seamounts ⓘ |
| linkedTo | subduction of the Pacific Plate beneath the Philippine Sea Plate ⓘ |
| locatedIn |
Philippine Sea
ⓘ
western Pacific Ocean ⓘ |
| magmatism | basaltic volcanism ⓘ |
| ocean | Pacific Ocean ⓘ |
| orientation | roughly north–south ⓘ |
| parallelTo |
Mariana island arc
ⓘ
linked to:
Mariana Island Arc
|
| partOf | western Pacific back-arc basins ⓘ |
| researchInterest |
back-arc spreading dynamics
ⓘ
subduction-related magmatism ⓘ |
| spreadingType | slow to intermediate spreading ⓘ |
| tectonicRegime | extensional ⓘ |
| tectonicSetting | back-arc spreading center ⓘ |
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: Mariana Trough Description of subject: The Mariana Trough is a back-arc basin in the western Pacific Ocean formed by seafloor spreading behind the Mariana subduction zone.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.