|
gptkbp:instanceOf
|
gptkb:geological_formation
|
|
gptkbp:alsoKnownAs
|
gptkb:Big_Freeze
|
|
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:discoveredBy
|
gptkb:Gerard_de_Geer
|
|
gptkbp:discoveredIn
|
1916
|
|
gptkbp:duration
|
~1,200 years
|
|
gptkbp:effect
|
changes in flora and fauna
cooling of Northern Hemisphere
glacial re-advance
possible impact on human populations
|
|
gptkbp:endDate
|
c. 11,700 years ago
|
|
gptkbp:evidence
|
lake sediments
ice core data
pollen records
|
|
gptkbp:followedBy
|
Holocene
|
|
gptkbp:location
|
gptkb:Northern_Hemisphere
|
|
gptkbp:namedAfter
|
gptkb:Dryas_octopetala
|
|
gptkbp:precededBy
|
gptkb:Bølling-Allerød_interstadial
|
|
gptkbp:relatedTo
|
end of Pleistocene
transition to Holocene
|
|
gptkbp:significance
|
abrupt climate change
|
|
gptkbp:startDate
|
c. 12,900 years ago
|
|
gptkbp:studiedIn
|
archaeology
geology
paleoclimatology
|
|
gptkbp:temperature
|
drop of 2–6°C in Greenland
|
|
gptkbp:bfsParent
|
gptkb:early_Holocene
gptkb:Late_Pleistocene
|
|
gptkbp:bfsLayer
|
6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Younger Dryas
|