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Deglaciation of the Pacific coastal corridor directly preceded the human colonization of the Americas
Abstract
Dating of rock surfaces and cave bones suggests the North Pacific coast was a viable path for human migration to the Americas.
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The archaeological sites used to date the rapid dispersal of First Peoples in mid-latitude North America before 14.5 ka are reliably dated.
“based on a group of reliably dated archaeological sites in mid-latitude North America”
From Beringia and the peopling of the Western Hemisphere (2023) · cites this paper as [24]
The rapid dispersal of First Peoples in mid-latitude North America began before 14.5 ka, based on a group of reliably dated archaeological sites in mid-latitude North America.
“The late dating of the post-LGM ice-free corridor indicates that the rapid dispersal of First Peoples in mid-latitude North America that began before 14.5 ka (based on a group of reliably dated archaeological sites in mid-latitude North America) probably began on the NW Pacific coast, which was largely deglaciated at this time [2,24,25].”
From Beringia and the peopling of the Western Hemisphere (2023) · cites this paper as [24]
Retreat of the western margin of the Cordilleran Ice Sheet and associated postglacial uplift occurred early enough to have provided a migration route for people prior to the earliest known archaeological sites south of the ice sheets.
“indicate that retreat of the western margin of the Cordilleran Ice Sheet and associated postglacial uplift occurred early enough to have provided a migration route for people prior to the earliest known archaeological sites south of the ice sheets”
From The age of the opening of the Ice-Free Corridor and implications for the peopling of the Americas (2022) · cites this paper as [54]
These people likely arrived by traversing the Pacific coast using watercraft.
“These people likely arrived by traversing the Pacific coast using watercraft (Fig. 6A) (10, 32).”
From Pre-Clovis projectile points at the Debra L. Friedkin site, Texas—Implications for the Late Pleistocene peopling of the Americas (2018) · cites this paper as [32]
Both models are compatible with the current human genetic evidence and what is known about the opening of the coastal and inland corridors.
“Both models are compatible with the current human genetic evidence and what is known about the opening of the coastal and inland corridors (1, 2, 32).”
From Pre-Clovis projectile points at the Debra L. Friedkin site, Texas—Implications for the Late Pleistocene peopling of the Americas (2018) · cites this paper as [32]
A viable coastal route between southern Beringia and mid-latitude North America may have been available by 17 ka, although probably requiring some use of watercraft.
“and a viable coastal route between southern Beringia and mid-latitude North America may have been available by 17 ka (although probably requiring some use of watercraft) [24]”
From Beringia and the peopling of the Western Hemisphere (2023) · cites this paper as [24]
Deglaciation of the NW Pacific coast began as early as 18 ka.
“Deglaciation of the NW Pacific coast began as early as 18 ka”
From Beringia and the peopling of the Western Hemisphere (2023) · cites this paper as [24]
Before 15 ka, the NW Pacific was accessible to people in Beringia only from the southern BLB.
“Before 15 ka, the NW Pacific was accessible to people in Beringia only from the southern BLB [24,25].”
From Beringia and the peopling of the Western Hemisphere (2023) · cites this paper as [24]
The Pacific coastal corridor would have been open for migration by ~16 ka ago as the Cordilleran Ice Sheet retreated and exposed tracks of land along the coast.
“This corridor would have been open for migration by ~16 ka ago as the Cordilleran Ice Sheet retreated and exposed tracks of land along the coast (32).”
From Pre-Clovis projectile points at the Debra L. Friedkin site, Texas—Implications for the Late Pleistocene peopling of the Americas (2018) · cites this paper as [32]
The interior corridor between the Cordilleran and Laurentide ice sheets did not open until ~14 ka ago.
“The interior corridor between the Cordilleran and Laurentide ice sheets did not open until ~14 ka ago”
From Pre-Clovis projectile points at the Debra L. Friedkin site, Texas—Implications for the Late Pleistocene peopling of the Americas (2018) · cites this paper as [32]
Bison and other animals were passing through the interior corridor by ~13 ka ago.
“and bison and other animals were passing through the corridor by ~13 ka ago (32).”
From Pre-Clovis projectile points at the Debra L. Friedkin site, Texas—Implications for the Late Pleistocene peopling of the Americas (2018) · cites this paper as [32]
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Metadata
- Authors
- Lesnek, A. J., Briner, J. P., Lindqvist, C., Baichtal, J. F., & Heaton, T. H.
- Affiliations
- Department of Geology, University at Buffalo, Buffalo, NY 14260, USA.
- Department of Biological Sciences, University at Buffalo, Buffalo, NY 14260, USA.
- Tongass National Forest, Thorne Bay, AK 99919, USA.
- Department of Earth Sciences, University of South Dakota, Vermillion, SD 57069, USA.
- Venue
- Science Advances
- Published
- 2018-05-04
- Volume
- 4
- Issue
- 5
- ISSN
- 2375-2548
- PMC
- PMC5976267
- Cited by
- 118
- References
- 1
- Language
- en
- Funders
- Geological Society of America
- University at Buffalo (IMPACT)
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