The video argues that a cosmic impact around 12,900 years ago may have triggered the Younger Dryas cooling and submerged pre-Clovis coastal settlements. The impact remains a disputed hypothesis. Some pre-Clovis sites on drowned continental shelves were inundated by postglacial sea-level rise as ice melted; they do not show that an impact caused their loss. Targeted surveys have documented other submerged structures and settlements. Modern sonar now maps more than a quarter of the global ocean floor, though mapping is not the same as archaeological exploration. The video's link between an impact and submerged settlements is unproven. 🌊🔍
Video's impact claim is disputed; sea-level rise drowned pre-Clovis sites
Key facts
- The video argues that a cosmic airburst or impact around 12,900 years ago may have triggered the Younger Dryas cooling and submerged pre-Clovis coastal settlements.
- The Younger Dryas impact is a disputed hypothesis, commonly dated to about 12,850 years ago; it is not an established impact event.
- There is no evidence that the proposed impact raised sea levels. Pre-Clovis sites on drowned continental shelves were inundated by postglacial sea-level rise and do not demonstrate an impact-caused population collapse.
- Submerged structures and settlements are known from targeted surveys on continental shelves; broad ocean scans alone do not show that newly mapped features are archaeological sites.
- Modern sonar now maps more than a quarter of the global ocean floor, so "less than 20%" is outdated as a mapping statistic; mapping is not the same as archaeological exploration.
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
Discovery Day - Prescott: Younger Dryas Impact Hypothesiscommons.erau.edu
Evidence suggests that this rapid climate shift may have been triggered by a cosmic event, forming the basis of the Younger Dryas impact hypothesis. This study ...
The Younger Dryas impact hypothesis: A requiem - ADSui.adsabs.harvard.edu
by N Pinter · 2011 · Cited by 182 — The Younger Dryas (YD) impact hypothesis is a recent theory that suggests that a cometary or meteoritic body or bodies hit and/or exploded over North ...
Study uncovers new evidence supporting Younger Dryas ...heritagedaily.com
The Younger Dryas Impact Hypothesis (YDIH) proposes that a cometary or meteoric body exploded over the North American area sometime around ...
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