The history of ice-sheet retreat on North America during Termination 5: Implications for the origin of the sea-level highstand during interglacial stage 11
peer reviewed Termination (T) 5, ∼424 ka, involved the biggest deglaciation of land-ice mass during the Quaternary. Warming and ice-sheet retreat during T5 led to an exceptionally long period of interglacial warmth known as Marine Isotope Stage (MIS) 11, ∼424–395 ka. A detailed understanding of the...
Published in: | Earth and Planetary Science Letters |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier B.V.
2023
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Online Access: | https://orbi.uliege.be/handle/2268/306111 https://doi.org/10.1016/j.epsl.2023.118286 |
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ftorbi:oai:orbi.ulg.ac.be:2268/306111 2024-04-21T08:03:49+00:00 The history of ice-sheet retreat on North America during Termination 5: Implications for the origin of the sea-level highstand during interglacial stage 11 Parker, Rebecca L. Foster, Gavin L. Gutjahr, Marcus Wilson, Paul A. Obrochta, Stephen P. Fagel, Nathalie Cooper, Matthew J. Michalik, Agnes Milton, James A. Bailey, Ian UR Geology 2023-09-15 https://orbi.uliege.be/handle/2268/306111 https://doi.org/10.1016/j.epsl.2023.118286 en eng Elsevier B.V. https://api.elsevier.com/content/article/PII:S0012821X23002996?httpAccept=text/xml urn:issn:0012-821X urn:issn:1385-013X https://orbi.uliege.be/handle/2268/306111 info:hdl:2268/306111 doi:10.1016/j.epsl.2023.118286 scopus-id:2-s2.0-85164736641 restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess Earth and Planetary Science Letters, 618, 118286 (2023-09-15) chemical weathering interglacial sea-level Laurentide Ice Sheet MIS 11 North Atlantic Pb isotope Continental ice sheet Deglaciations Ice-sheet retreat Laurentide ice sheets Marine isotope stage 11 Marine isotope stages Pb isotopes Geophysics Geochemistry and Petrology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2023 ftorbi https://doi.org/10.1016/j.epsl.2023.118286 2024-03-27T14:58:41Z peer reviewed Termination (T) 5, ∼424 ka, involved the biggest deglaciation of land-ice mass during the Quaternary. Warming and ice-sheet retreat during T5 led to an exceptionally long period of interglacial warmth known as Marine Isotope Stage (MIS) 11, ∼424–395 ka. A detailed understanding of the history of continental ice-sheet decay during T5 is required to disentangle regional contributions of ice-sheet retreat to sea-level rise (that range between ∼1 and 13 m above present day) and to correct it for glacio-isostatic adjustments (GIA). Yet little is known about the timing and magnitude of retreat during this time of the volumetrically most important continental ice sheet in the Northern Hemisphere, the Laurentide Ice Sheet (LIS). Here we present new authigenic Fe-Mn oxyhydroxide-derived high-resolution records of Pb isotope data and associated rare earth element profiles for samples spanning T5 from Labrador Sea IODP Site U1302/3. These records feature astronomically-paced radiogenic Pb isotope excursions that track increases in chemical weathering of North American bedrock and freshwater routing to the Labrador Sea via Hudson Straits associated with LIS retreat. Our records show that LIS retreat during T5 began 429. 2 ± 7.9 ka (2σ) and likely occurred over a longer timescale (by ∼10 to 5 kyr) than that observed for T2 and T1. They also show that Hudson Bay Ice Saddle collapse (and therefore LIS break-up) occurred ∼419 ± 4.7 ka (2σ), around the same time as best estimates of southern Greenland deglaciation, but ∼12 kyr before LIS deglaciation and the sea-level high-stand associated with the latter half of MIS 11 likely occurred. Our findings therefore highlight that ice-mass loss on North America likely played an important role in the seemingly protracted nature of T5 sea-level rise. A comparison of the deglaciation histories of the LIS and the southern Greenland Ice Sheet during T5, T2 and T1 also demonstrates that the well-constrained history of regional ice-sheet retreat during T1 is not always ... Article in Journal/Newspaper Greenland Hudson Bay Ice Sheet Labrador Sea North Atlantic University of Liège: ORBi (Open Repository and Bibliography) Earth and Planetary Science Letters 618 118286 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
chemical weathering interglacial sea-level Laurentide Ice Sheet MIS 11 North Atlantic Pb isotope Continental ice sheet Deglaciations Ice-sheet retreat Laurentide ice sheets Marine isotope stage 11 Marine isotope stages Pb isotopes Geophysics Geochemistry and Petrology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
chemical weathering interglacial sea-level Laurentide Ice Sheet MIS 11 North Atlantic Pb isotope Continental ice sheet Deglaciations Ice-sheet retreat Laurentide ice sheets Marine isotope stage 11 Marine isotope stages Pb isotopes Geophysics Geochemistry and Petrology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Parker, Rebecca L. Foster, Gavin L. Gutjahr, Marcus Wilson, Paul A. Obrochta, Stephen P. Fagel, Nathalie Cooper, Matthew J. Michalik, Agnes Milton, James A. Bailey, Ian The history of ice-sheet retreat on North America during Termination 5: Implications for the origin of the sea-level highstand during interglacial stage 11 |
topic_facet |
chemical weathering interglacial sea-level Laurentide Ice Sheet MIS 11 North Atlantic Pb isotope Continental ice sheet Deglaciations Ice-sheet retreat Laurentide ice sheets Marine isotope stage 11 Marine isotope stages Pb isotopes Geophysics Geochemistry and Petrology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed Termination (T) 5, ∼424 ka, involved the biggest deglaciation of land-ice mass during the Quaternary. Warming and ice-sheet retreat during T5 led to an exceptionally long period of interglacial warmth known as Marine Isotope Stage (MIS) 11, ∼424–395 ka. A detailed understanding of the history of continental ice-sheet decay during T5 is required to disentangle regional contributions of ice-sheet retreat to sea-level rise (that range between ∼1 and 13 m above present day) and to correct it for glacio-isostatic adjustments (GIA). Yet little is known about the timing and magnitude of retreat during this time of the volumetrically most important continental ice sheet in the Northern Hemisphere, the Laurentide Ice Sheet (LIS). Here we present new authigenic Fe-Mn oxyhydroxide-derived high-resolution records of Pb isotope data and associated rare earth element profiles for samples spanning T5 from Labrador Sea IODP Site U1302/3. These records feature astronomically-paced radiogenic Pb isotope excursions that track increases in chemical weathering of North American bedrock and freshwater routing to the Labrador Sea via Hudson Straits associated with LIS retreat. Our records show that LIS retreat during T5 began 429. 2 ± 7.9 ka (2σ) and likely occurred over a longer timescale (by ∼10 to 5 kyr) than that observed for T2 and T1. They also show that Hudson Bay Ice Saddle collapse (and therefore LIS break-up) occurred ∼419 ± 4.7 ka (2σ), around the same time as best estimates of southern Greenland deglaciation, but ∼12 kyr before LIS deglaciation and the sea-level high-stand associated with the latter half of MIS 11 likely occurred. Our findings therefore highlight that ice-mass loss on North America likely played an important role in the seemingly protracted nature of T5 sea-level rise. A comparison of the deglaciation histories of the LIS and the southern Greenland Ice Sheet during T5, T2 and T1 also demonstrates that the well-constrained history of regional ice-sheet retreat during T1 is not always ... |
author2 |
UR Geology |
format |
Article in Journal/Newspaper |
author |
Parker, Rebecca L. Foster, Gavin L. Gutjahr, Marcus Wilson, Paul A. Obrochta, Stephen P. Fagel, Nathalie Cooper, Matthew J. Michalik, Agnes Milton, James A. Bailey, Ian |
author_facet |
Parker, Rebecca L. Foster, Gavin L. Gutjahr, Marcus Wilson, Paul A. Obrochta, Stephen P. Fagel, Nathalie Cooper, Matthew J. Michalik, Agnes Milton, James A. Bailey, Ian |
author_sort |
Parker, Rebecca L. |
title |
The history of ice-sheet retreat on North America during Termination 5: Implications for the origin of the sea-level highstand during interglacial stage 11 |
title_short |
The history of ice-sheet retreat on North America during Termination 5: Implications for the origin of the sea-level highstand during interglacial stage 11 |
title_full |
The history of ice-sheet retreat on North America during Termination 5: Implications for the origin of the sea-level highstand during interglacial stage 11 |
title_fullStr |
The history of ice-sheet retreat on North America during Termination 5: Implications for the origin of the sea-level highstand during interglacial stage 11 |
title_full_unstemmed |
The history of ice-sheet retreat on North America during Termination 5: Implications for the origin of the sea-level highstand during interglacial stage 11 |
title_sort |
history of ice-sheet retreat on north america during termination 5: implications for the origin of the sea-level highstand during interglacial stage 11 |
publisher |
Elsevier B.V. |
publishDate |
2023 |
url |
https://orbi.uliege.be/handle/2268/306111 https://doi.org/10.1016/j.epsl.2023.118286 |
genre |
Greenland Hudson Bay Ice Sheet Labrador Sea North Atlantic |
genre_facet |
Greenland Hudson Bay Ice Sheet Labrador Sea North Atlantic |
op_source |
Earth and Planetary Science Letters, 618, 118286 (2023-09-15) |
op_relation |
https://api.elsevier.com/content/article/PII:S0012821X23002996?httpAccept=text/xml urn:issn:0012-821X urn:issn:1385-013X https://orbi.uliege.be/handle/2268/306111 info:hdl:2268/306111 doi:10.1016/j.epsl.2023.118286 scopus-id:2-s2.0-85164736641 |
op_rights |
restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.epsl.2023.118286 |
container_title |
Earth and Planetary Science Letters |
container_volume |
618 |
container_start_page |
118286 |
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1796943520627425280 |