South Atlantic mid-ocean ridge system
E64617
The South Atlantic mid-ocean ridge system is a major underwater mountain chain where tectonic plates diverge in the South Atlantic Ocean, creating new oceanic crust and hosting features such as the Bouvet Triple Junction.
Aliases (1)
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
mid-ocean ridge
→
undersea mountain range → |
| agePattern |
progressively older crust away from axis
→
youngest crust at ridge axis → |
| associatedWith |
mid-ocean ridge basalt
→
normal faulting → shallow-focus earthquakes → |
| bathymetry | shallower than adjacent abyssal plains → |
| connectedTo |
American-Antarctic Ridge
→
surface form: "American–Antarctic Ridge"
Southwest Indian Ridge → |
| controls | magnetic anomaly patterns in South Atlantic seafloor → |
| creates | new oceanic crust → |
| crustalThickness | typical oceanic crust thickness → |
| crustTypeProduced | oceanic crust → |
| extendsFrom | equatorial Atlantic region → |
| extendsTo | Southern Ocean → |
| formedBy | rifting between South America and Africa → |
| geologicalProcess | seafloor spreading → |
| hasFeature |
Bouvet Triple Junction region
→
surface form: "Bouvet Triple Junction"
axial rift valley → fracture zones → hydrothermal vent fields → transform faults → |
| heatFlow | elevated relative to surrounding seafloor → |
| hosts | chemosynthetic biological communities at vents → |
| influences |
South Atlantic basin morphology
→
patterns of South Atlantic magnetic lineations → |
| isBoundaryBetween | South American Plate and African Plate → |
| locatedIn |
South Atlantic
→
surface form: "South Atlantic Ocean"
|
| magmatism | basaltic magmatism → |
| orientation | roughly north–south → |
| partOf |
Mid-Atlantic Ridge
→
global mid-ocean ridge system → |
| sedimentCover | thin near ridge axis → |
| separates |
African Plate
→
South American Plate → |
| spreadingRate | slow-spreading ridge → |
| studiedIn |
marine geophysics
→
plate tectonics research → |
| tectonicSetting | divergent plate boundary → |
| terminatesNear |
Bouvet Triple Junction region
→
surface form: "Bouvet Triple Junction"
|
| timeOfInitiation | Mesozoic era → |
| topographicExpression | bathymetric high → |
| volcanismType | submarine volcanism → |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form: "South Atlantic Ocean floor"