| gptkbp:instanceOf | gptkb:climatic_event 
 | 
                        
                            
                                | gptkbp:alsoKnownAs | gptkb:Younger_Dryas 
 | 
                        
                            
                                | gptkbp:cause | gptkb:meltwater_pulse_from_Lake_Agassiz disruption of North Atlantic thermohaline circulation
 extraterrestrial impact hypothesis
 
 | 
                        
                            
                                | gptkbp:characterizedBy | sudden return to glacial conditions 
 | 
                        
                            
                                | gptkbp:duration | about 1,200 years 
 | 
                        
                            
                                | gptkbp:endDate | approximately 11,700 years ago 
 | 
                        
                            
                                | gptkbp:evidence | gptkb:Greenland_ice_cores European pollen records
 
 | 
                        
                            
                                | gptkbp:followedBy | gptkb:Holocene_epoch 
 | 
                        
                            
                                | gptkbp:impact | gptkb:Neolithic_Revolution megafauna extinction
 human populations
 
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                                | gptkbp:location | gptkb:Northern_Hemisphere 
 | 
                        
                            
                                | gptkbp:namedAfter | gptkb:Dryas_octopetala 
 | 
                        
                            
                                | gptkbp:precededBy | gptkb:Bølling-Allerød_interstadial 
 | 
                        
                            
                                | gptkbp:relatedTo | gptkb:Holocene_epoch gptkb:Pleistocene_epoch
 
 | 
                        
                            
                                | gptkbp:significance | major abrupt climate change at end of Pleistocene 
 | 
                        
                            
                                | gptkbp:startDate | approximately 12,900 years ago 
 | 
                        
                            
                                | gptkbp:studiedBy | archaeologists geologists
 paleoclimatologists
 
 | 
                        
                            
                                | gptkbp:temperature | significant cooling 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:post-glacial_Lake_Agassiz gptkb:Greenland_ice_cores
 
 | 
                        
                            
                                | gptkbp:bfsLayer | 7 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Younger Dryas event 
 |