K-T boundary

GPTKB entity

Statements (23)
Predicate Object
gptkbp:instanceOf geological formation
gptkbp:age approximately 66 million years ago
gptkbp:alsoKnownAs gptkb:Cretaceous–Paleogene_boundary
gptkbp:associatedWith mass extinction event
dinosaur extinction
gptkbp:characterizedBy high iridium concentration
gptkbp:contains iridium layer
gptkbp:discoveredBy gptkb:Luis_Alvarez
gptkb:Walter_Alvarez
gptkbp:discoveredIn 1980
gptkbp:evidence gptkb:Chicxulub_impact
gptkbp:foundIn sedimentary rock layers worldwide
https://www.w3.org/2000/01/rdf-schema#label K-T boundary
gptkbp:marking beginning of the Paleogene period
end of the Cretaceous period
gptkbp:notablePlace gptkb:Gubbio,_Italy
gptkb:Stevns_Klint,_Denmark
gptkb:Hell_Creek_Formation,_USA
gptkbp:separates Mesozoic Era and Cenozoic Era
gptkbp:usedIn paleontology
stratigraphy
gptkbp:bfsParent gptkb:K-T_extinction_event
gptkbp:bfsLayer 8