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gptkbp:instanceOf
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gptkb:event
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gptkbp:calderaDiameter
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about 180 kilometers
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gptkbp:category
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mass extinction cause
prehistoric impact event
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gptkbp:cause
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gptkb:Cretaceous–Paleogene_extinction_event
tsunamis
wildfires
acid rain
mass extinction of non-avian dinosaurs
extinction of many marine and terrestrial species
global climate disruption
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gptkbp:craterDiscovered
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1991
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gptkbp:craterLocation
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partially on land, partially under the Gulf of Mexico
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gptkbp:date
|
approximately 66 million years ago
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gptkbp:discoveredBy
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gptkb:Luis_Alvarez
gptkb:Walter_Alvarez
gptkb:Frank_Asaro
gptkb:Helen_Michel
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gptkbp:energyReleased
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about 100 teratons of TNT
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gptkbp:evidence
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gptkb:shocked_quartz
tektites
iridium layer in K–Pg boundary
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gptkbp:hasCrater
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about 20 kilometers
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|
https://www.w3.org/2000/01/rdf-schema#label
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Chicxulub impact event
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gptkbp:impactAngle
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about 60 degrees
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gptkbp:impactorDiameter
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about 10–15 kilometers
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gptkbp:impactorType
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gptkb:asteroid
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gptkbp:impactVelocity
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about 20 km/s
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gptkbp:location
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gptkb:Yucatán_Peninsula,_Mexico
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gptkbp:namedAfter
|
gptkb:Chicxulub,_Yucatán
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gptkbp:occurredIn
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gptkb:Chicxulub_crater
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gptkbp:proposedBy
|
1980
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gptkbp:relatedTo
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gptkb:K–Pg_boundary
gptkb:Paleogene_period
gptkb:Cretaceous_period
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gptkbp:significance
|
led to rise of mammals
marks the end of the Mesozoic Era
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gptkbp:studiedBy
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astronomer
climate scientists
geologists
paleontologists
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gptkbp:bfsParent
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gptkb:Cretaceous_period
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gptkbp:bfsLayer
|
5
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