Imperial College London
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DrDylanRood

Faculty of Engineering, Department of Earth Science & Engineering

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 7461d.rood

 
 
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Location

 

4.43Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Clark:2022:10.1073/pnas.2118558119,
author = {Clark, J and Carlson, AE and Reyes, A and Carlson, ECB and Guillaume, L and Milne, GA and Tarasov, L and Caffee, M and Wilcken, K and Rood, DH},
doi = {10.1073/pnas.2118558119},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
pages = {1--6},
title = {The age of the opening of the Ice-Free Corridor and implications for the peopling of the Americas},
url = {http://dx.doi.org/10.1073/pnas.2118558119},
volume = {119},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The Clovis-first model for the peopling of the Americas by ∼13.4 ka has long invoked the Ice-Free Corridor (IFC) between the retreating margins of the Cordilleran and Laurentide ice sheets as the migration route from Alaska and the Yukon down to the Great Plains. Evidence from archaeology and ancient genomics, however, now suggests that pre-Clovis migrations occurred by at least ∼15.5 to 16.0 ka or earlier than most recent assessments of the age of IFC opening at ∼14 to 15 ka, lending support to the use of a Pacific coast migration route instead. Uncertainties in ages from the IFC used in these assessments, however, allow for an earlier IFC opening which would be consistent with the availability of the IFC as a migration route by ∼15.5 to 16.0 ka. Here, we use 64 cosmogenic (10Be) exposure ages to closely date the age of the full opening of the IFC at 13.8 ± 0.5 ka. Our results thus clearly establish that the IFC was not available for the first peopling of the Americas after the Last Glacial Maximum, whereas extensive geochronological data from the Pacific coast support its earlier availability as a coastal migration route.
AU  - Clark,J
AU  - Carlson,AE
AU  - Reyes,A
AU  - Carlson,ECB
AU  - Guillaume,L
AU  - Milne,GA
AU  - Tarasov,L
AU  - Caffee,M
AU  - Wilcken,K
AU  - Rood,DH
DO  - 10.1073/pnas.2118558119
EP  - 6
PY  - 2022///
SN  - 0027-8424
SP  - 1
TI  - The age of the opening of the Ice-Free Corridor and implications for the peopling of the Americas
T2  - Proceedings of the National Academy of Sciences of the United States of America
UR  - http://dx.doi.org/10.1073/pnas.2118558119
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000786513200010&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.pnas.org/doi/full/10.1073/pnas.2118558119
UR  - http://hdl.handle.net/10044/1/96773
VL  - 119
ER  -
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