Cascadia Subduction Zone

E15671
convergent plate boundary megathrust fault subduction zone

The Cascadia Subduction Zone is a major convergent plate boundary off the Pacific Northwest coast of North America, capable of generating powerful megathrust earthquakes and tsunamis.

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All labels observed (10)

Label Occurrences
Cascadia subduction zone 26
Cascadia Subduction Zone canonical 5
Cascadia subduction zone region 3

Statements (54)

Predicate Object
instanceOf convergent plate boundary ⓘ
megathrust fault ⓘ
subduction zone ⓘ
affectsRegion British Columbia ⓘ
Northern California ⓘ
Oregon ⓘ
Pacific Northwest ⓘ
Washington ⓘ
surface form: Washington State
associatedWith Cascadia earthquake hazard ⓘ
Cascadia tsunami hazard ⓘ
Ring of Fire ⓘ
averageRecurrenceInterval approximately 500 years ⓘ
earthquakeType megathrust earthquake ⓘ
extendsFrom Vancouver Island ⓘ
surface form: Northern Vancouver Island
extendsTo Cape Mendocino ⓘ
hazardType coastal subsidence ⓘ
liquefaction ⓘ
strong ground shaking ⓘ
tsunami ⓘ
knownFor potential for large megathrust earthquakes ⓘ
potential for large tsunamis ⓘ
lastKnownGreatEarthquakeDate January 26, 1700 ⓘ
lastKnownGreatEarthquakeGenerated trans-Pacific tsunami ⓘ
lastKnownGreatEarthquakeMagnitude approximately 9.0 ⓘ
length approximately 1000 kilometers ⓘ
locatedIn Pacific Ocean ⓘ
locatedOffCoastOf British Columbia ⓘ
North America ⓘ
Northern California ⓘ
Oregon ⓘ
Pacific Northwest ⓘ
Washington ⓘ
maximumEstimatedMagnitude 9.0 ⓘ
paleoseismologyEvidenceFoundIn coastal marshes ⓘ
offshore turbidites ⓘ
plateMotionType oblique convergence ⓘ
recurrenceIntervalEstimate approximately 300 to 600 years ⓘ
riskTo Coastal communities of British Columbia ⓘ
Coastal communities of Northern California ⓘ
Coastal communities of Oregon ⓘ
Coastal communities of Washington ⓘ
Portland, Oregon, United States ⓘ
surface form: Portland, Oregon

Seattle ⓘ
Vancouver ⓘ
surface form: Vancouver, British Columbia

Victoria, British Columbia ⓘ
seismogenicZoneWidth approximately 60 to 80 kilometers ⓘ
slipType thrust faulting ⓘ
studiedBy Geological Survey of Canada ⓘ
United States Geological Survey ⓘ
tectonicPlateOverriding North American Plate ⓘ
tectonicPlateSubducting Explorer Plate ⓘ
Gorda Plate ⓘ
Juan de Fuca Plate ⓘ
tsunamiRecordedIn Japan ⓘ

Referenced by (42)

Full triples — surface form annotated when it differs from this entity's canonical label.

Juan de Fuca Plate → subductionZoneName → Cascadia Subduction Zone ⓘ
North American Plate → boundaryFeature → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Canada West Coast → locatedOnTectonicPlateBoundary → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Pacific coast of North America → hasNotableFeature → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Cascadia → overlapsWith → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone region
Explorer Plate → subductionZoneName → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Explorer Plate → adjacentTo → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia forearc
Juan de Fuca Ridge → region → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction system back-arc
Gorda Plate → formsPartOf → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Gorda Plate → subductsAt → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Gorda Plate → associatedWith → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia megathrust
Crescent City, California → tsunamiSourceRegion → Cascadia Subduction Zone ⓘ
Mount Meager massif → tectonicSetting → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Queen Charlotte Fault → connectedTo → Cascadia Subduction Zone ⓘ
eastern Pacific Ocean → hasSubductionZone → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
North Coast Ranges → associatedWith → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone region
North American plate boundary system → hasPart → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Explorer Ridge → near → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Mendocino Fracture Zone → near → Cascadia Subduction Zone ⓘ
Blanco Fracture Zone → associatedWith → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Blanco Fracture Zone → isPartOf → Cascadia Subduction Zone ⓘ
this entity surface form: Juan de Fuca–Pacific plate boundary system
Gorda Ridge → geologicalProvince → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone region
Gorda Ridge → nearbyHazardContext → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia megathrust region
Mount Mazama → geologicalSetting → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
High Cascades → tectonicSetting → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Garibaldi Volcanic Belt → orogeny → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Garibaldi Volcanic Belt → associatedWith → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Mendocino Triple Junction → associatedFault → Cascadia Subduction Zone ⓘ
Cascadian orogeny → relatedTo → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Cascadian orogeny → associatedWith → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia megathrust
Cascadian orogeny → associatedWith → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction earthquakes
Pacific margin of the Americas → includesFeature → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Western Cascades → tectonicSetting → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Pacific–North American plate boundary system → hasPart → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Queen Charlotte Triple Junction → associatedWithTrench → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
East Pacific tectonic system → contains → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Explorer Plate and Juan de Fuca Plate → partOf → Cascadia Subduction Zone ⓘ
subject surface form: Explorer Plate
this entity surface form: Cascadia subduction zone
Blanco Transform → connectsTo → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Cascade Range volcanic province → orogeny → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Cascadia back-arc region → locatedEastOf → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Cascadia back-arc region → associatedWith → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction zone
Cascadia back-arc region → partOf → Cascadia Subduction Zone ⓘ
this entity surface form: Cascadia subduction system