The Younger Dryas and Noah’s Flood

The Younger Dryas was a cold climate interval at the end of the last ice age, about 12,900 to 11,700 years before present on the figures climate agencies use. Global sea level was about 120 m lower at the last glacial maximum and rose as ice sheets melted, with fast meltwater pulses and a slowdown during the Younger Dryas itself. That history is not the flood date in Genesis 7:6Genesis 7:6 · King James VersionAnd Noah was six hundred years old when the flood of waters was upon the earth.Genesis 7:6 · King James VersionOpen the Source, and it is not Ussher’s 2348 BC on this site’s timeline.

Key Points

• NOAA Climate.gov describes the Younger Dryas as a cold interruption of post-glacial warming after the last ice age peaked around 20,000 years ago, linked to meltwater and Atlantic currents. (1)
• NASA GISS places sea level about 120 m below present at the last glacial maximum and dates the Younger Dryas cold period near 12,900–11,800 years ago, when the rise of the oceans slowed. (2) (3)
• Meltwater pulse 1A falls before the Younger Dryas (about 14,600–13,500 years before present on the GISS summary). Meltwater pulse 1B follows the Younger Dryas. (2) (3) These are ice-sheet melt events in a warming deglaciation, not a year 1656 from Adam.
• Firestone and co-authors proposed an extraterrestrial impact at the Younger Dryas onset. (4) Meltzer, Holliday, and co-authors argue the chronological case for an isochronous impact marker layer fails. (5) The dispute is real. This page does not pick a geological winner.
• Hancock reads a world-destroying flood and a lost civilization into the start of the Younger Dryas and dates that cataclysm near 12,800 years ago. (6) NOAA’s paragraph does not.
• When Was Noah’s Flood? keeps the Genesis and Ussher totals. Equating them with the Younger Dryas is a further claim the biblical numbers do not make.

Cold Interval, Not a Second Genesis Date

The last glacial maximum locked enough water in ice sheets that global sea level stood on the order of 120 m lower than today. (2) As the ice melted, sea level rose over many thousands of years. Rates were not steady. Meltwater pulses mark faster intervals. During the Younger Dryas the rise slowed while the North Atlantic region cooled. (1) (2)

That is a climate story about ice, meltwater, and ocean circulation. Genesis dates its flood by Noah’s 600th year. On the King James ages that is year 1656 from Adam. On Ussher’s traditional label it is 2348 BC. Those figures sit in the third millennium BC or in a short biblical chronology. They are not 12,900 years before the present. When Was Noah’s Flood? is the arithmetic.

The Impact Hypothesis, Stated Honestly

In 2007 Firestone and colleagues argued in PNAS for an extraterrestrial impact that triggered the Younger Dryas. (4) Later papers disputed the nanodiamond, magnetic spherule, and iridium claims and offered terrestrial explanations. Meltzer, Holliday, and colleagues in 2014 conclude that chronological evidence does not support the claimed impact-marker layer. (5) Hancock’s page itself says the comet hypothesis remains controversial. (6)

A Christian reader may find the deglacial floods of meltwater interesting beside Genesis 6–9. Interest is not identity. Regional ice-dam bursts and rising seas at the end of the ice age are documented climate events. They do not become Noah’s flood by sharing the English word “flood.”

Frequently Asked Questions

What Happened About 12,000 Years Ago?

The Younger Dryas cold interval was ending and sea-level rise was accelerating again as ice melted. That is the mainstream climate summary. It is not a biblical year count.

Did an Asteroid Cause the Younger Dryas?

Firestone and co-authors say an impact is the trigger. Meltzer, Holliday, and co-authors say the chronological evidence fails. The scientific literature is divided. This page reports both and does not settle the geology.

Is the Younger Dryas Noah’s Flood?

Not on the Genesis ages, and not on Ussher’s traditional date. Linking them is a modern proposal that must be argued on its own. The climate pages cited here do not make that link.

Keep Reading

When Was Noah’s Flood? is the biblical date. The Black Sea Deluge is another local-flood proposal. Is There Evidence of a Worldwide Flood? is the geological claim. Evolution and Creation is the age-of-the-earth debate among churches.