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gptkbp:instanceOf
|
geological formation
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gptkbp:age
|
approximately 66 million years ago
|
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gptkbp:alsoKnownAs
|
gptkb:Cretaceous–Paleogene_boundary
|
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gptkbp:associatedWith
|
extinction of non-avian dinosaurs
mass extinction event
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gptkbp:contains
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gptkb:microtektites
gptkb:shocked_quartz
iridium-rich clay layer
soot layer
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gptkbp:definedIn
|
gptkb:International_Commission_on_Stratigraphy
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gptkbp:evidence
|
gptkb:volcanic_activity_(Deccan_Traps)
gptkb:Chicxulub_impact_event
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gptkbp:formerName
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gptkb:K–T_boundary
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gptkbp:foundIn
|
sedimentary rock layers worldwide
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|
https://www.w3.org/2000/01/rdf-schema#label
|
K–Pg boundary
|
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gptkbp:K
|
Cretaceous
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gptkbp:marking
|
beginning of the Cenozoic Era
beginning of the Paleogene period
end of the Cretaceous period
end of the Mesozoic Era
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gptkbp:notablePlace
|
gptkb:Gubbio,_Italy
gptkb:Stevns_Klint,_Denmark
gptkb:Brazos_River,_Texas,_USA
gptkb:El_Kef,_Tunisia
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gptkbp:Pg
|
Paleogene
|
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gptkbp:significance
|
rise of mammals
major faunal turnover
end of ammonites
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gptkbp:usedIn
|
stratigraphy
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gptkbp:bfsParent
|
gptkb:Alvarez_hypothesis_(dinosaur_extinction_by_asteroid_impact)
gptkb:Chicxulub_crater
gptkb:Cretaceous–Paleogene_extinction_event
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gptkbp:bfsLayer
|
5
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