Southwest Indian Ridge
E11927
The Southwest Indian Ridge is a slow-spreading mid-ocean ridge in the southern Indian Ocean that forms part of the global system of divergent tectonic plate boundaries.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Southwest Indian Ridge canonical | 12 |
How this entity was disambiguated
This entity first appeared as the object of triple T34856 — 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: Southwest Indian Ridge Context triple: [Mid-Atlantic Ridge, meets, Southwest Indian Ridge]
-
A.
Mid-Atlantic Ridge
The Mid-Atlantic Ridge is a vast underwater mountain range and divergent tectonic plate boundary running down the center of the Atlantic Ocean, where new oceanic crust is formed.
-
B.
Romanche Fracture Zone
The Romanche Fracture Zone is a major transform fault and deep-sea fracture zone in the equatorial Atlantic Ocean that offsets the Mid-Atlantic Ridge and hosts one of the deepest points in the Atlantic basin.
-
C.
Gakkel Ridge
Gakkel Ridge is a slow-spreading mid-ocean ridge located beneath the Arctic Ocean, forming the tectonic boundary between the North American and Eurasian plates.
-
D.
Charlie-Gibbs Fracture Zone
The Charlie-Gibbs Fracture Zone is a major deep-sea transform fault system in the North Atlantic Ocean that offsets and disrupts the continuity of the Mid-Atlantic Ridge.
-
E.
Bouvet Triple Junction region
The Bouvet Triple Junction region is a remote area in the South Atlantic Ocean where three major tectonic plate boundaries meet near Bouvet Island, forming a complex seafloor spreading and faulting system.
- 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: Southwest Indian Ridge Target entity description: The Southwest Indian Ridge is a slow-spreading mid-ocean ridge in the southern Indian Ocean that forms part of the global system of divergent tectonic plate boundaries.
-
A.
Mid-Atlantic Ridge
The Mid-Atlantic Ridge is a vast underwater mountain range and divergent tectonic plate boundary running down the center of the Atlantic Ocean, where new oceanic crust is formed.
-
B.
Romanche Fracture Zone
The Romanche Fracture Zone is a major transform fault and deep-sea fracture zone in the equatorial Atlantic Ocean that offsets the Mid-Atlantic Ridge and hosts one of the deepest points in the Atlantic basin.
-
C.
Gakkel Ridge
Gakkel Ridge is a slow-spreading mid-ocean ridge located beneath the Arctic Ocean, forming the tectonic boundary between the North American and Eurasian plates.
-
D.
Charlie-Gibbs Fracture Zone
The Charlie-Gibbs Fracture Zone is a major deep-sea transform fault system in the North Atlantic Ocean that offsets and disrupts the continuity of the Mid-Atlantic Ridge.
-
E.
Bouvet Triple Junction region
The Bouvet Triple Junction region is a remote area in the South Atlantic Ocean where three major tectonic plate boundaries meet near Bouvet Island, forming a complex seafloor spreading and faulting system.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
divergent plate boundary
ⓘ
mid-ocean ridge ⓘ oceanic spreading center ⓘ |
| ageProgression | oceanic crust becomes older away from ridge axis ⓘ |
| associatedWith |
earthquakes
ⓘ
hydrothermal activity ⓘ volcanism ⓘ |
| bathymetry | ridge crest lies at several thousand meters water depth ⓘ |
| connectsTo |
Central Indian Ridge
ⓘ
Mid-Atlantic Ridge ⓘ Southeast Indian Ridge ⓘ |
| countryOffshoreFrom |
Antarctica
ⓘ
Madagascar ⓘ South Africa ⓘ |
| crustType | oceanic crust ⓘ |
| discoveredBy | marine geophysical surveys ⓘ |
| formsBoundaryBetween |
African Plate and Antarctic Plate
ⓘ
African Plate and Indo-Australian Plate ⓘ |
| geologicalProcess | seafloor spreading ⓘ |
| hasCrustalThickness | relatively thin oceanic crust compared to fast-spreading ridges ⓘ |
| hasFeature |
fracture zones
ⓘ
segmented ridge axis ⓘ transform faults ⓘ |
| hasMagmatism | spatially variable magmatic activity ⓘ |
| hasMorphology | deep axial valley typical of slow-spreading ridges ⓘ |
| hasTectonics | extensional faulting along ridge axis ⓘ |
| influences |
Indian Ocean basin evolution
ⓘ
patterns of Indian Ocean circulation at abyssal depths ⓘ |
| isExampleOf | slow-spreading ridge ⓘ |
| isSegmentOf | Indian Ocean Ridge system ⓘ |
| linkedTo | triple junctions in the Indian Ocean ⓘ |
| lithosphereType | oceanic lithosphere ⓘ |
| locatedIn | southern Indian Ocean ⓘ |
| mantleSource | depleted upper mantle ⓘ |
| ocean | Indian Ocean ⓘ |
| partOf |
global mid-ocean ridge system
ⓘ
global system of divergent tectonic plate boundaries ⓘ |
| produces | mid-ocean ridge basalt ⓘ |
| researchField |
marine geology
ⓘ
plate tectonics ⓘ |
| separates |
African Plate
ⓘ
Antarctic Plate ⓘ Indo-Australian Plate ⓘ |
| spreadingRate | slow-spreading ⓘ |
| spreadingStyle | oblique spreading in some segments ⓘ |
| tectonicSetting | divergent boundary between tectonic plates ⓘ |
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: Southwest Indian Ridge Description of subject: The Southwest Indian Ridge is a slow-spreading mid-ocean ridge in the southern Indian Ocean that forms part of the global system of divergent tectonic plate boundaries.
Referenced by (12)
Full triples — surface form annotated when it differs from this entity's canonical label.