Evidence of advancing continental ice sheets during the Younger Dryas has been reported from the Scandinavian Ice Sheet, Laurentide Ice Sheet, Cordilleran Ice Sheet, and Siberian Ice Sheet.
Notes on verification
Strong corroboration for Scandinavian, Laurentide, and Cordilleran ice sheet readvances during the Younger Dryas from multiple independent sources. However, the claim of a distinct 'Siberian Ice Sheet' advancing during this period is not well supported; Siberia lacked a unified ice sheet comparable to the others, with evidence instead pointing to permafrost and localized mountain glaciation. This weakens overall confidence in the claim as stated. [cascade flags: wikipedia_dropped_other_sources_exist | tier=silver indep_score=0.983 clusters=3 claim_tier=notable]
Sources
- Younger Dryas | Definition, Causes, & Termination (seed:history_and_archaeology)
- https://www.sciencedirect.com/science/article/abs/pii/S0277379115301785 (corroboration)
- https://www.antarcticglaciers.org/glacial-geology/laurentide-ice-sheet/deglaciation-of-the-laurentide-ice-sheet-and-the-younger-dryas/ (corroboration)
- https://www.science.org/doi/10.1126/sciadv.aay2935 (corroboration)