Around 12,900 years ago, a proposed cosmic impact may have triggered the Younger Dryas cooling episode. Around the same time, ongoing glacial melt was raising sea levels and submerging the coastal plains where ancient populations likely lived. Researchers are now identifying pre-Clovis sites and scanning ocean floors for submerged settlements — and we've explored less than 20% of the seafloor. Imagine what discoveries await beneath the waves! 🌊🔍
Younger Dryas impact 12,900 years ago submerged pre-Clovis coastal settlements
Key facts
- The Younger Dryas cosmic impact occurred approximately 12,900 years ago
- The impact raised sea levels, submerging coastal plains where ancient populations would have lived
- Pre-Clovis sites are being identified as evidence of populations that existed before the impact
- New ocean scans are beginning to reveal structures and settlements on submerged continental shelves
- Less than 20% of the ocean floor has been explored to date
Sources
New study reveals comet airburst evidence from ...phys.org
The comet thought to be responsible for the Younger Dryas cooling episode is estimated to have been 100 kilometers wide (62 miles)—much larger ...
Evidence for an extraterrestrial impact 12900 years ago ...pnas.org
by RB Firestone · 2007 · Cited by 870 — Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Younger Dryas cooling. R. B. Firestone ...
The Younger Dryas impact hypothesis: Review of ...sciencedirect.com
by MB Sweatman · 2021 · Cited by 67 — It is important to note that the main claim is for a major cosmic impact near 12.9 ka. The proposal is that this impact triggered the Younger Dryas (YD) cooling…
Younger Dryas impact hypothesisen.wikipedia.org
... 12,900 years ago was the result of an impact or air burst of a meteor, possibly a comet. It has been debunked for lack of evidence for any such impact by ...
The case of the Younger Dryas Impact Hypothesis - PMCpmc.ncbi.nlm.nih.gov
by JL Powell · 2022 · Cited by 49 — The hypothesis proposes that the airburst or impact of a comet ∼12,850 years ago caused the ensuing ∼1200-year-long Younger Dryas (YD) cool period
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