Geochronology
Geochronology
GChron
Articles | Volume 4, issue 1
Articles | Volume 4, issue 1
https://doi.org/10.5194/gchron-4-191-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-4-191-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 4, issue 1
Research article
 | 
07 Apr 2022
Research article |  | 07 Apr 2022

Cosmogenic ages indicate no MIS 2 refugia in the Alexander Archipelago, Alaska

Caleb K. Walcott, Jason P. Briner, James F. Baichtal, Alia J. Lesnek, and Joseph M. Licciardi

Viewed

Total article views: 2,724 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
1,878 741 105 2,724 283 96 129
  • HTML: 1,878
  • PDF: 741
  • XML: 105
  • Total: 2,724
  • Supplement: 283
  • BibTeX: 96
  • EndNote: 129
Views and downloads (calculated since 15 Nov 2021)
Cumulative views and downloads (calculated since 15 Nov 2021)

Viewed (geographical distribution)

Total article views: 2,724 (including HTML, PDF, and XML) Thereof 2,584 with geography defined and 140 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 18 Nov 2025
Download
Short summary
We present a record of ice retreat from the northern Alexander Archipelago, Alaska. During the last ice age (~ 26 000–19 000 years ago), these islands were covered by the Cordilleran Ice Sheet. We tested whether islands were ice-free during the last ice age for human migrants moving from Asia to the Americas. We found that these islands became ice-free between ~ 15 100 years ago and ~ 16 000 years ago, and thus these islands were not suitable for human habitation during the last ice age.
Read more
Share