Scotia Arc

E54355

island arc system submarine ridge system tectonic feature

The Scotia Arc is a geologically active, curved chain of undersea ridges and island arcs in the South Atlantic that forms the boundary between the South American and Antarctic tectonic plates.

Aliases (2)

Scotia Arc region ×1
Scotia region ×1

Statements (47)

Predicate	Object
instanceOf	island arc system → submarine ridge system → tectonic feature →
associatedWith	active volcanism → oceanic crust deformation → seismic activity →
borders	Scotia Sea →
extendsFrom	Tierra del Fuego region →
extendsTo	South Sandwich Islands region →
formedBy	relative motion of South American Plate and Antarctic Plate →
formsBoundaryBetween	Antarctic Plate → South American Plate →
geologicalAge	Cenozoic →
hasImportanceFor	plate kinematic reconstructions in the South Atlantic–Antarctic region →
hasMorphology	arc-shaped chain of ridges and island arcs →
hasPart	Aurora Bank → Bruce Bank → Discovery Bank → North Scotia Ridge → Scotia Sea margins → Shackleton Fracture Zone → South Georgia microcontinent → South Orkney microcontinent → South Sandwich Arc → South Sandwich Trench → South Scotia Ridge → Terror Rise →
influences	Antarctic Circumpolar Current pathways → ocean circulation in the Southern Ocean →
isCurved	true →
isGeologicallyActive	true →
isStudiedIn	geophysics → marine geology → plate tectonics →
isSubmerged	mostly →
locatedIn	South Atlantic Ocean →
near	Antarctic Peninsula → Falkland Plateau →
partOf	Scotia Plate boundary zone →
relatedTo	Scotia Plate → South Sandwich Plate →
separates	Drake Passage region → South Atlantic Ocean basin → Weddell Sea region →
tectonicSetting	back-arc basin environment → convergent plate boundary → subduction zone system →

Referenced by (9)

Subject (surface form when different)	Predicate
North Scotia Ridge → Scotia Ridge → South Sandwich Island Arc → South Scotia Ridge →	partOf
Scotia Sea → South Scotia Ridge ("Scotia region") →	namedAfter
Scotia Sea →	boundedBy
Scotia Ridge →	relatedFeature
Antarctic Plate ("Scotia Arc region") →	surroundedBy