ArticleProceedings of the National Academy of Sciences of the United States of America2022
The age of the opening of the Ice-Free Corridor and implications for the peopling of the Americas.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Characterizing the American Upper Paleolithic.Science advances · 2025Review
- New age constraints for human entry into the Americas on the north Pacific coast.Scientific reports · 2024Article
- Windows of opportunity for the peopling of the Americas.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Ice and ocean constraints on early human migrations into North America along the Pacific coast.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Beringia and the peopling of the Western Hemisphere.Proceedings. Biological sciences · 2023Review
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10 authors.
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Abstract
SignificanceThe Ice-Free Corridor (IFC) has long played a key role in hypotheses about the peopling of the Americas. Earlier assessments of its age suggested that the IFC was available for a Clovis-first migration, but subsequent developments now suggest a pre-Clovis occupation of the Americas that occurred before the opening of the IFC, thus supporting a Pacific coastal migration route instead. However, large uncertainties in existing ages from the IFC cannot preclude its availability as a route for the first migrations. Resolving this debate over migration route is important for addressing the questions of when and how the first Americans arrived. We report cosmogenic nuclide exposure ages that show that the final opening of the IFC occurred well after pre-Clovis occupation.
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