Nazca–South America plate boundary

E911310

convergent plate boundary plate boundary subduction zone

The Nazca–South America plate boundary is a major convergent margin along the western edge of South America where the oceanic Nazca Plate subducts beneath the continental South American Plate, driving intense Andean volcanism, seismicity, and mountain building.

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All labels observed (10)

Label	Occurrences
Nazca Plate–South American Plate subduction zone	6
Andean seismic belt	1
Nazca Plate – South American Plate convergent margin	1
Nazca Plate–South America Plate subduction zone	1
Nazca Plate–South American Plate	1
Nazca Plate–South American Plate convergent boundary	1
Nazca–South America plate boundary canonical	1
Nazca–South America subduction zone	1
Nazca–South America subduction zone (Austral segment)	1
Nazca–South American plate boundary	1

How this entity was disambiguated

This entity first appeared as the object of triple T11217634 — 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: Nazca–South America plate boundary
Context triple: [Liquiñe-Ofqui Fault Zone, tectonicSetting, Nazca–South America plate boundary]

A. Nazca Plate
The Nazca Plate is an oceanic tectonic plate in the southeastern Pacific that subducts beneath the South American Plate, driving Andean mountain building and frequent earthquakes and volcanism along the western coast of South America.
B. Cocos–North America plate boundary
The Cocos–North America plate boundary is a convergent tectonic margin where the oceanic Cocos Plate subducts beneath the continental North American Plate, generating significant seismic and volcanic activity along Mexico’s Pacific coast.
C. Cocos–Nazca spreading center
The Cocos–Nazca spreading center is a mid-ocean ridge in the eastern Pacific where tectonic divergence forms and separates the Cocos and Nazca plates.
D. Farallon–North American plate boundary
The Farallon–North American plate boundary was an ancient convergent margin along western North America where the Farallon Plate subducted beneath the continent, setting the stage for the modern Pacific–North American plate boundary system.
E. Chile Triple Junction
The Chile Triple Junction is a tectonic plate boundary off the southern coast of Chile where the Nazca, South American, and Antarctic plates meet, creating a complex and geologically active region.
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: Nazca–South America plate boundary
Target entity description: The Nazca–South America plate boundary is a major convergent margin along the western edge of South America where the oceanic Nazca Plate subducts beneath the continental South American Plate, driving intense Andean volcanism, seismicity, and mountain building.

A. Nazca Plate
The Nazca Plate is an oceanic tectonic plate in the southeastern Pacific that subducts beneath the South American Plate, driving Andean mountain building and frequent earthquakes and volcanism along the western coast of South America.
B. Cocos–North America plate boundary
The Cocos–North America plate boundary is a convergent tectonic margin where the oceanic Cocos Plate subducts beneath the continental North American Plate, generating significant seismic and volcanic activity along Mexico’s Pacific coast.
C. Cocos–Nazca spreading center
The Cocos–Nazca spreading center is a mid-ocean ridge in the eastern Pacific where tectonic divergence forms and separates the Cocos and Nazca plates.
D. Farallon–North American plate boundary
The Farallon–North American plate boundary was an ancient convergent margin along western North America where the Farallon Plate subducted beneath the continent, setting the stage for the modern Pacific–North American plate boundary system.
E. Chile Triple Junction
The Chile Triple Junction is a tectonic plate boundary off the southern coast of Chile where the Nazca, South American, and Antarctic plates meet, creating a complex and geologically active region.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	convergent plate boundary ⓘ plate boundary ⓘ subduction zone ⓘ
associatedWith	Andean seismicity ⓘ Andean volcanism ⓘ Andes Mountains ⓘ linked to: Andes Peru–Chile Trench ⓘ linked to: Atacama Trench megathrust earthquakes ⓘ mountain building ⓘ tsunamis ⓘ
causes	back-arc deformation ⓘ deformation of the South American Plate ⓘ forearc basin development ⓘ uplift of the Andes ⓘ
characterizedBy	arc volcanism ⓘ crustal shortening ⓘ intense seismicity ⓘ subduction of oceanic lithosphere ⓘ thickening of continental crust ⓘ
continentalPlate	South American Plate ⓘ
drives	Andean orogeny ⓘ
extendsAlong	coast of Chile ⓘ coast of Colombia ⓘ coast of Ecuador ⓘ coast of Peru ⓘ coast of southern Argentina ⓘ western margin of South America ⓘ
forms	Peru–Chile Trench ⓘ linked to: Atacama Trench
hasFeature	accretionary prism ⓘ back-arc region ⓘ forearc region ⓘ volcanic arc ⓘ
hasProcess	crustal accretion ⓘ interplate coupling ⓘ sediment accretion ⓘ slab subduction ⓘ
influences	hazard distribution in Andean region ⓘ topography of western South America ⓘ
knownFor	Andean volcanic belt ⓘ linked to: Andean Volcanic Belt large subduction earthquakes ⓘ
locatedIn	South America ⓘ
marginType	convergent margin ⓘ
oceanicPlate	Nazca Plate ⓘ
overridingPlate	South American Plate ⓘ
partOf	Pacific Ring of Fire ⓘ
subductingPlate	Nazca Plate ⓘ
tectonicSetting	oceanic–continental subduction ⓘ

How these facts were elicited