Nazca Ridge

E51192

Nazca Ridge is a prominent submarine volcanic ridge in the southeastern Pacific Ocean formed by hotspot activity on the Nazca Plate.

Aliases (2)

Statements (42)
Predicate Object
instanceOf oceanic plateau
submarine volcanic ridge
affectsSubductionZone Peru–Chile Trench
crustType thickened oceanic crust
extendsToward Peruvian continental margin
formedBy hotspot volcanism
formedDuring Cenozoic
hasFeatureType submarine topographic high
hasGeologicalOrigin intraplate hotspot volcanism
hasImpactOn Andean orogeny dynamics
hasMaximumCrustalThickness greater than normal oceanic crust
hasMorphology broad, elevated ridge
influences forearc deformation in Peru
seismicity along the Peruvian margin
influencesTectonicsOf Peruvian margin
central Andes
isAssociatedWith anomalous bathymetry of Nazca Plate
anomalous gravity signature
crustal shortening in the central Andes
flat-slab subduction beneath Peru
reduced volcanism in central Peru
isComposedPrimarilyOf basaltic volcanic rocks
isHotspotTrackOf Easter hotspot
Nazca hotspot
isLocatedOffCoastOf South America
isLocatedWestOf Peru
isMappedUsing marine geophysical surveys
isNamedAfter Nazca Plate
isOverlainBy marine sediments
isParallelTo Humboldt (Nazca) Seamount Chain
isPartOf Nazca Plate bathymetric features
Pacific Ocean seafloor
isStudiedInDiscipline marine geology
plate tectonics
volcanology
isSubductingBeneath South American Plate
isYoungerThan adjacent normal oceanic crust of the Nazca Plate
locatedIn southeastern Pacific Ocean
locatedOn Nazca Plate
orientedApproximately northwest–southeast
tectonicSetting Nazca Plate–South America Plate convergent margin
terminatesNear Peru–Chile Trench

Referenced by (5)

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