Statements (25)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:geological_layer
|
| gptkbp:age |
about 66 million years
|
| gptkbp:associatedWith |
gptkb:Chicxulub_impactor
|
| gptkbp:contains |
gptkb:shocked_quartz
iridium soot spherules |
| gptkbp:discoveredBy |
gptkb:Luis_Alvarez
gptkb:Walter_Alvarez |
| gptkbp:foundIn |
gptkb:Gubbio,_Italy
gptkb:Stevns_Klint,_Denmark gptkb:Hell_Creek_Formation,_USA sedimentary rock sequences |
| gptkbp:globalPresence |
yes
|
| gptkbp:marking |
gptkb:Cretaceous–Paleogene_extinction_event
mass extinction end of Cretaceous period beginning of Paleogene period |
| gptkbp:notableFor |
high iridium concentration
|
| gptkbp:partOf |
gptkb:K–Pg_boundary
|
| gptkbp:thickness |
few centimeters
|
| gptkbp:usedFor |
stratigraphic correlation
|
| gptkbp:bfsParent |
gptkb:Raton_Formation
|
| gptkbp:bfsLayer |
8
|
| http://www.w3.org/2000/01/rdf-schema#label |
K–Pg boundary clay layer
|