The sequence was the Older Dryas (roughly 14,700–14,400 years ago), the Bølling–Allerød warming, then the Younger Dryas (about 12,900–11,700 years ago). The Younger Dryas ended at the start of the Holocene. Danish geologist Jessen coined the term “Younger Dryas” in 1938.
Younger Dryas chronology and naming clarified
Key facts
- Older Dryas: roughly 14,700–14,400 years ago, a cold phase lasting centuries
- Bølling–Allerød interstadial: the warming interval between the Older Dryas and Younger Dryas
- Younger Dryas: approximately 12,900–11,700 years ago, with boundaries varying slightly among chronologies
- The end of the Younger Dryas marks the start of the Holocene, conventionally about 11,700 years ago
- The term “Younger Dryas” was coined by Danish geologist Jessen in 1938, not Hart(s) in 1912
Sources
Evidence of Ancient Abrupt Climate Change Found in Arcticscripps.ucsd.edu
The Younger Dryas lasted a mere 200 years making it only a short blip in a warming period that has lasted 20,000 years but to scientists like ...
The Big Freeze: Rapid Cooling During the Younger Dryasscied.ucar.edu
Many scientists hypothesize that a partial or total shutdown of the ocean's thermohaline circulation led to the cooling.
Younger Dryasen.wikipedia.org
The Younger Dryas (YD, Greenland Stadial GS-1) was a period in Earth's geologic history that occurred circa 12,900 to 11,700 years Before Present (BP).
increased by 7°C or more in a few decadesarchive.ipcc.ch
On the other hand, very rapid warming at the start of the Bölling-Alleröd period, or at the end of the Younger Dryas may have occurred at rates as large as 10°C ...
The Younger Dryasncei.noaa.gov
About 14,500 years ago, Earth's climate began to shift from a cold glacial world to a warmer interglacial state. Partway through this transition ...
Younger Dryas | Earth and Atmospheric Sciencesebsco.com
The Younger Dryas, occurring 12,900 to 11,600 years ago, was a well-defined climatic event during which cool temperatures returned and ice sheets reformed.
Younger Dryas | Definition, Causes, & Terminationbritannica.com
The Younger Dryas ended with another abrupt warming event around 11,600 years ago, marking the start of the Holocene Epoch and modern climate.
Two examples of abrupt climate changeocp.ldeo.columbia.edu
An event that occurred about 12,800 years before present (BP), termed the Younger Dryas (YD), is the canonical example of abrupt climate change. ... Around 15,000 ...
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