South Sandwich Island Arc
E87422
The South Sandwich Island Arc is a volcanic island chain in the South Atlantic Ocean formed by the subduction of the South American Plate beneath the Scotia Plate, featuring active volcanoes and associated deep-sea trenches.
Observed surface forms (4)
| Surface form | As subject | As object |
|---|---|---|
| South Sandwich Arc | 0 | 1 |
| South Sandwich Islands region | 0 | 1 |
| South Sandwich subduction zone | 0 | 1 |
| South Sandwich volcanic arc | 0 | 1 |
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
subduction zone
→
volcanic island arc → |
| associatedWith | South Sandwich Trench → |
| biogeographicCharacteristic | remote and sparsely vegetated islands → |
| climate | sub-Antarctic → |
| closestContinent |
Antarctica
→
South America → |
| country | United Kingdom → |
| dominantMagmaComposition | basaltic-andesitic → |
| eruptiveStyle | predominantly explosive → |
| formedBy | subduction of the South American Plate beneath the Scotia Plate → |
| geodynamicRole | accommodates relative motion between South American Plate and Scotia Plate → |
| geologicalAge | Cenozoic → |
| governedAsPartOf | British Overseas Territory of South Georgia and the South Sandwich Islands NERFINISHED → |
| hasFeature |
active volcanoes
→
deep-sea trench → |
| hasVolcanicEdifice |
stratovolcanoes
→
submarine volcanoes → |
| hazard |
earthquakes
→
tsunamis → volcanic eruptions → |
| includes | South Sandwich Islands NERFINISHED → |
| locatedIn |
South Atlantic
→
surface form:
South Atlantic Ocean
South Atlantic sector of the Southern Ocean → Southern Hemisphere → |
| marginType | ocean-ocean convergent margin → |
| oceanBasin |
South Atlantic
→
surface form:
South Atlantic Ocean
|
| oceanicCrustSubducted | South American Plate → |
| orientation | north-south trending arc → |
| overridingPlate | Scotia Plate → |
| partOf |
British Overseas Territories
→
Scotia Arc → |
| researchUse |
natural laboratory for subduction-related volcanism
→
study of plate tectonics → |
| seismicity | high → |
| subductionZoneType | intra-oceanic subduction zone → |
| tectonicSetting | convergent plate boundary → |
| volcanicActivity | ongoing → |
| volcanismType | subduction-related volcanism → |
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
South Sandwich subduction zone
this entity surface form:
South Sandwich volcanic arc
this entity surface form:
South Sandwich Islands region
this entity surface form:
South Sandwich Arc