An updated radiocarbon-based ice margin chronology for the last deglaciation of the North American Ice Sheet Complex
This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record The North American Ice Sheet Complex (NAISC; consisting of the Laurentide, Cordilleran and Innuitian ice sheets) was the largest ice mass to repeatedly grow and decay in the Northern...
Published in: | Quaternary Science Reviews |
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Online Access: | http://hdl.handle.net/10871/122545 https://doi.org/10.1016/j.quascirev.2020.106223 |
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ftunivexeter:oai:ore.exeter.ac.uk:10871/122545 2024-09-15T18:12:14+00:00 An updated radiocarbon-based ice margin chronology for the last deglaciation of the North American Ice Sheet Complex Dalton, AS Margold, M Stokes, CR Tarasov, L Dyke, AS Adams, RS Allard, S Arends, HE Atkinson, N Attig, JW Barnett, PJ Barnett, RL Batterson, M Bernatchez, P Borns, HW Breckenridge, A Briner, JP Brouard, E Campbell, JE Carlson, AE Clague, JJ Curry, BB Daigneault, RA Dubé-Loubert, H Easterbrook, DJ Franzi, DA Friedrich, HG Funder, S Gauthier, MS Gowan, AS Harris, KL Hétu, B Hooyer, TS Jennings, CE Johnson, MD Kehew, AE Kelley, SE Kerr, D King, EL Kjeldsen, KK Knaeble, AR Lajeunesse, P Lakeman, TR Lamothe, M Larson, P Lavoie, M Loope, HM Lowell, TV Lusardi, BA Manz, L McMartin, I Nixon, FC Occhietti, S Parkhill, MA Piper, DJW Pronk, AG Richard, PJH Ridge, JC Ross, M Roy, M Seaman, A Shaw, J Stea, RR Teller, JT Thompson, WB Thorleifson, LH Utting, DJ Veillette, JJ Ward, BC Weddle, TK Wright, HE 2020 http://hdl.handle.net/10871/122545 https://doi.org/10.1016/j.quascirev.2020.106223 en eng Elsevier Vol. 234, 106223 doi:10.1016/j.quascirev.2020.106223 http://hdl.handle.net/10871/122545 0277-3791 Quaternary Science Reviews © 2020. This version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ 2021-03-09 Under embargo until 9 March 2021 in compliance with publisher policy. https://creativecommons.org/licenses/by-nc-nd/4.0/ Quaternary glaciation North America ice margin chronology radiocarbon Article 2020 ftunivexeter https://doi.org/10.1016/j.quascirev.2020.106223 2024-07-29T03:24:13Z This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record The North American Ice Sheet Complex (NAISC; consisting of the Laurentide, Cordilleran and Innuitian ice sheets) was the largest ice mass to repeatedly grow and decay in the Northern Hemisphere during the Quaternary. Understanding its pattern of retreat following the Last Glacial Maximum is critical for studying many facets of the Late Quaternary, including ice sheet behaviour, the evolution of Holocene landscapes, sea level, atmospheric circulation, and the peopling of the Americas. Currently, the most up-to-date and authoritative margin chronology for the entire ice sheet complex is featured in two publications (Geological Survey of Canada Open File 1574 [Dyke et al., 2003]; ‘Quaternary Glaciations – Extent and Chronology, Part II’ [Dyke, 2004]). These often-cited datasets track ice margin recession in 36 time slices spanning 18 ka to 1 ka (all ages in uncalibrated radiocarbon years) using a combination of geomorphology, stratigraphy and radiocarbon dating. However, by virtue of being over 15 years old, the ice margin chronology requires updating to reflect new work and important revisions. This paper updates the aforementioned 36 ice margin maps to reflect new data from regional studies. We also update the original radiocarbon dataset from the 2003/2004 papers with 1541 new ages to reflect work up to and including 2018. A major revision is made to the 18 ka ice margin, where Banks and Eglinton islands (once considered to be glacial refugia) are now shown to be fully glaciated. Our updated 18 ka ice sheet increased in areal extent from 17.81 to 18.37 million km2, which is an increase of 3.1% in spatial coverage of the NAISC at that time. Elsewhere, we also summarize, region-by-region, significant changes to the deglaciation sequence. This paper integrates new information provided by regional experts and radiocarbon data into the deglaciation sequence while maintaining consistency with the ... Article in Journal/Newspaper Ice Sheet University of Exeter: Open Research Exeter (ORE) Quaternary Science Reviews 234 106223 |
institution |
Open Polar |
collection |
University of Exeter: Open Research Exeter (ORE) |
op_collection_id |
ftunivexeter |
language |
English |
topic |
Quaternary glaciation North America ice margin chronology radiocarbon |
spellingShingle |
Quaternary glaciation North America ice margin chronology radiocarbon Dalton, AS Margold, M Stokes, CR Tarasov, L Dyke, AS Adams, RS Allard, S Arends, HE Atkinson, N Attig, JW Barnett, PJ Barnett, RL Batterson, M Bernatchez, P Borns, HW Breckenridge, A Briner, JP Brouard, E Campbell, JE Carlson, AE Clague, JJ Curry, BB Daigneault, RA Dubé-Loubert, H Easterbrook, DJ Franzi, DA Friedrich, HG Funder, S Gauthier, MS Gowan, AS Harris, KL Hétu, B Hooyer, TS Jennings, CE Johnson, MD Kehew, AE Kelley, SE Kerr, D King, EL Kjeldsen, KK Knaeble, AR Lajeunesse, P Lakeman, TR Lamothe, M Larson, P Lavoie, M Loope, HM Lowell, TV Lusardi, BA Manz, L McMartin, I Nixon, FC Occhietti, S Parkhill, MA Piper, DJW Pronk, AG Richard, PJH Ridge, JC Ross, M Roy, M Seaman, A Shaw, J Stea, RR Teller, JT Thompson, WB Thorleifson, LH Utting, DJ Veillette, JJ Ward, BC Weddle, TK Wright, HE An updated radiocarbon-based ice margin chronology for the last deglaciation of the North American Ice Sheet Complex |
topic_facet |
Quaternary glaciation North America ice margin chronology radiocarbon |
description |
This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record The North American Ice Sheet Complex (NAISC; consisting of the Laurentide, Cordilleran and Innuitian ice sheets) was the largest ice mass to repeatedly grow and decay in the Northern Hemisphere during the Quaternary. Understanding its pattern of retreat following the Last Glacial Maximum is critical for studying many facets of the Late Quaternary, including ice sheet behaviour, the evolution of Holocene landscapes, sea level, atmospheric circulation, and the peopling of the Americas. Currently, the most up-to-date and authoritative margin chronology for the entire ice sheet complex is featured in two publications (Geological Survey of Canada Open File 1574 [Dyke et al., 2003]; ‘Quaternary Glaciations – Extent and Chronology, Part II’ [Dyke, 2004]). These often-cited datasets track ice margin recession in 36 time slices spanning 18 ka to 1 ka (all ages in uncalibrated radiocarbon years) using a combination of geomorphology, stratigraphy and radiocarbon dating. However, by virtue of being over 15 years old, the ice margin chronology requires updating to reflect new work and important revisions. This paper updates the aforementioned 36 ice margin maps to reflect new data from regional studies. We also update the original radiocarbon dataset from the 2003/2004 papers with 1541 new ages to reflect work up to and including 2018. A major revision is made to the 18 ka ice margin, where Banks and Eglinton islands (once considered to be glacial refugia) are now shown to be fully glaciated. Our updated 18 ka ice sheet increased in areal extent from 17.81 to 18.37 million km2, which is an increase of 3.1% in spatial coverage of the NAISC at that time. Elsewhere, we also summarize, region-by-region, significant changes to the deglaciation sequence. This paper integrates new information provided by regional experts and radiocarbon data into the deglaciation sequence while maintaining consistency with the ... |
format |
Article in Journal/Newspaper |
author |
Dalton, AS Margold, M Stokes, CR Tarasov, L Dyke, AS Adams, RS Allard, S Arends, HE Atkinson, N Attig, JW Barnett, PJ Barnett, RL Batterson, M Bernatchez, P Borns, HW Breckenridge, A Briner, JP Brouard, E Campbell, JE Carlson, AE Clague, JJ Curry, BB Daigneault, RA Dubé-Loubert, H Easterbrook, DJ Franzi, DA Friedrich, HG Funder, S Gauthier, MS Gowan, AS Harris, KL Hétu, B Hooyer, TS Jennings, CE Johnson, MD Kehew, AE Kelley, SE Kerr, D King, EL Kjeldsen, KK Knaeble, AR Lajeunesse, P Lakeman, TR Lamothe, M Larson, P Lavoie, M Loope, HM Lowell, TV Lusardi, BA Manz, L McMartin, I Nixon, FC Occhietti, S Parkhill, MA Piper, DJW Pronk, AG Richard, PJH Ridge, JC Ross, M Roy, M Seaman, A Shaw, J Stea, RR Teller, JT Thompson, WB Thorleifson, LH Utting, DJ Veillette, JJ Ward, BC Weddle, TK Wright, HE |
author_facet |
Dalton, AS Margold, M Stokes, CR Tarasov, L Dyke, AS Adams, RS Allard, S Arends, HE Atkinson, N Attig, JW Barnett, PJ Barnett, RL Batterson, M Bernatchez, P Borns, HW Breckenridge, A Briner, JP Brouard, E Campbell, JE Carlson, AE Clague, JJ Curry, BB Daigneault, RA Dubé-Loubert, H Easterbrook, DJ Franzi, DA Friedrich, HG Funder, S Gauthier, MS Gowan, AS Harris, KL Hétu, B Hooyer, TS Jennings, CE Johnson, MD Kehew, AE Kelley, SE Kerr, D King, EL Kjeldsen, KK Knaeble, AR Lajeunesse, P Lakeman, TR Lamothe, M Larson, P Lavoie, M Loope, HM Lowell, TV Lusardi, BA Manz, L McMartin, I Nixon, FC Occhietti, S Parkhill, MA Piper, DJW Pronk, AG Richard, PJH Ridge, JC Ross, M Roy, M Seaman, A Shaw, J Stea, RR Teller, JT Thompson, WB Thorleifson, LH Utting, DJ Veillette, JJ Ward, BC Weddle, TK Wright, HE |
author_sort |
Dalton, AS |
title |
An updated radiocarbon-based ice margin chronology for the last deglaciation of the North American Ice Sheet Complex |
title_short |
An updated radiocarbon-based ice margin chronology for the last deglaciation of the North American Ice Sheet Complex |
title_full |
An updated radiocarbon-based ice margin chronology for the last deglaciation of the North American Ice Sheet Complex |
title_fullStr |
An updated radiocarbon-based ice margin chronology for the last deglaciation of the North American Ice Sheet Complex |
title_full_unstemmed |
An updated radiocarbon-based ice margin chronology for the last deglaciation of the North American Ice Sheet Complex |
title_sort |
updated radiocarbon-based ice margin chronology for the last deglaciation of the north american ice sheet complex |
publisher |
Elsevier |
publishDate |
2020 |
url |
http://hdl.handle.net/10871/122545 https://doi.org/10.1016/j.quascirev.2020.106223 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
Vol. 234, 106223 doi:10.1016/j.quascirev.2020.106223 http://hdl.handle.net/10871/122545 0277-3791 Quaternary Science Reviews |
op_rights |
© 2020. This version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ 2021-03-09 Under embargo until 9 March 2021 in compliance with publisher policy. https://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1016/j.quascirev.2020.106223 |
container_title |
Quaternary Science Reviews |
container_volume |
234 |
container_start_page |
106223 |
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1810449811865862144 |