The impact of Holocene deglaciation and glacial dynamics on the landscapes and geomorphology of Potter Peninsula, King George Island (Isla 25 Mayo), NW Antarctic Peninsula
The timing and impact of deglaciation and Holocene readvances on the terrestrial continental margins of the Antarctic Peninsula (AP) have been well-studied but are still debated. Potter Peninsula on King George Island (KGI) (Isla 25 de Mayo), South Shetland Islands (SSI), NW Antarctic Peninsula, has...
Published in: | Frontiers in Earth Science |
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Frontiers Media SA
2023
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Online Access: | http://dx.doi.org/10.3389/feart.2022.1073075 https://www.frontiersin.org/articles/10.3389/feart.2022.1073075/full |
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crfrontiers:10.3389/feart.2022.1073075 2024-03-31T07:48:27+00:00 The impact of Holocene deglaciation and glacial dynamics on the landscapes and geomorphology of Potter Peninsula, King George Island (Isla 25 Mayo), NW Antarctic Peninsula Heredia Barión, Pablo A. Strelin, Jorge A. Roberts, Stephen J. Spiegel, Cornelia Wacker, Lukas Niedermann, Samuel Bentley, Michael J. Pearson, Emma J. Czalbowski, Nadia T. Manograsso Davies, Sarah J. Schnetger, Bernhard Grosjean, Martin Arcusa, Stephanie Perren, Bianca Hocking, Emma P. Kuhn, Gerhard UK Research and Innovation 2023 http://dx.doi.org/10.3389/feart.2022.1073075 https://www.frontiersin.org/articles/10.3389/feart.2022.1073075/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Earth Science volume 10 ISSN 2296-6463 General Earth and Planetary Sciences journal-article 2023 crfrontiers https://doi.org/10.3389/feart.2022.1073075 2024-03-05T00:06:21Z The timing and impact of deglaciation and Holocene readvances on the terrestrial continental margins of the Antarctic Peninsula (AP) have been well-studied but are still debated. Potter Peninsula on King George Island (KGI) (Isla 25 de Mayo), South Shetland Islands (SSI), NW Antarctic Peninsula, has a detailed assemblage of glacial landforms and stratigraphic exposures for constraining deglacial landscape development and glacier readvances. We undertook new morphostratigraphic mapping of the deglaciated foreland of the Warszawa Icefield, an outlet of the Bellingshausen (Collins) Ice Cap on Potter Peninsula, using satellite imagery and new lithofacies recognition and interpretations, combined with new chronostratigraphic analysis of stratigraphic sections, lake sediments, and moraine deposits. Results show that the deglaciation on Potter Peninsula began before c. 8.2 ka. Around c. 7.0 ka, the Warszawa Icefield and the marine-facing Fourcade Glacier readvanced across Potter Peninsula and to the outer part of Potter Cove. Evidence of further readvances on Potter Peninsula was absent until the Warszawa Icefield margin was landward of its present position on three occasions: c. 1.7–1.4 ka, after c. 0.7 ka (most likely c. 0.5–0.1 ka), and by 1956 CE. The timing of Holocene deglaciation and glacier fluctuations on Potter Peninsula are broadly coeval with other glacier- and ice-free areas on the SSI and the northern AP and likely driven by interactions between millennial–centennial-scale changes in solar insolation and irradiance, the southern westerlies, and the Southern Annular Mode. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Ice cap Isla 25 de Mayo King George Island South Shetland Islands Frontiers (Publisher) Antarctic The Antarctic Antarctic Peninsula King George Island South Shetland Islands Potter Cove 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) isla 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) Potter Peninsula ENVELOPE(-58.658,-58.658,-62.246,-62.246) Fourcade ENVELOPE(-62.490,-62.490,-64.612,-64.612) Fourcade Glacier ENVELOPE(-58.666,-58.666,-62.216,-62.216) Warszawa Icefield ENVELOPE(-58.558,-58.558,-62.203,-62.203) Frontiers in Earth Science 10 |
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Open Polar |
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Frontiers (Publisher) |
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crfrontiers |
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unknown |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Heredia Barión, Pablo A. Strelin, Jorge A. Roberts, Stephen J. Spiegel, Cornelia Wacker, Lukas Niedermann, Samuel Bentley, Michael J. Pearson, Emma J. Czalbowski, Nadia T. Manograsso Davies, Sarah J. Schnetger, Bernhard Grosjean, Martin Arcusa, Stephanie Perren, Bianca Hocking, Emma P. Kuhn, Gerhard The impact of Holocene deglaciation and glacial dynamics on the landscapes and geomorphology of Potter Peninsula, King George Island (Isla 25 Mayo), NW Antarctic Peninsula |
topic_facet |
General Earth and Planetary Sciences |
description |
The timing and impact of deglaciation and Holocene readvances on the terrestrial continental margins of the Antarctic Peninsula (AP) have been well-studied but are still debated. Potter Peninsula on King George Island (KGI) (Isla 25 de Mayo), South Shetland Islands (SSI), NW Antarctic Peninsula, has a detailed assemblage of glacial landforms and stratigraphic exposures for constraining deglacial landscape development and glacier readvances. We undertook new morphostratigraphic mapping of the deglaciated foreland of the Warszawa Icefield, an outlet of the Bellingshausen (Collins) Ice Cap on Potter Peninsula, using satellite imagery and new lithofacies recognition and interpretations, combined with new chronostratigraphic analysis of stratigraphic sections, lake sediments, and moraine deposits. Results show that the deglaciation on Potter Peninsula began before c. 8.2 ka. Around c. 7.0 ka, the Warszawa Icefield and the marine-facing Fourcade Glacier readvanced across Potter Peninsula and to the outer part of Potter Cove. Evidence of further readvances on Potter Peninsula was absent until the Warszawa Icefield margin was landward of its present position on three occasions: c. 1.7–1.4 ka, after c. 0.7 ka (most likely c. 0.5–0.1 ka), and by 1956 CE. The timing of Holocene deglaciation and glacier fluctuations on Potter Peninsula are broadly coeval with other glacier- and ice-free areas on the SSI and the northern AP and likely driven by interactions between millennial–centennial-scale changes in solar insolation and irradiance, the southern westerlies, and the Southern Annular Mode. |
author2 |
UK Research and Innovation |
format |
Article in Journal/Newspaper |
author |
Heredia Barión, Pablo A. Strelin, Jorge A. Roberts, Stephen J. Spiegel, Cornelia Wacker, Lukas Niedermann, Samuel Bentley, Michael J. Pearson, Emma J. Czalbowski, Nadia T. Manograsso Davies, Sarah J. Schnetger, Bernhard Grosjean, Martin Arcusa, Stephanie Perren, Bianca Hocking, Emma P. Kuhn, Gerhard |
author_facet |
Heredia Barión, Pablo A. Strelin, Jorge A. Roberts, Stephen J. Spiegel, Cornelia Wacker, Lukas Niedermann, Samuel Bentley, Michael J. Pearson, Emma J. Czalbowski, Nadia T. Manograsso Davies, Sarah J. Schnetger, Bernhard Grosjean, Martin Arcusa, Stephanie Perren, Bianca Hocking, Emma P. Kuhn, Gerhard |
author_sort |
Heredia Barión, Pablo A. |
title |
The impact of Holocene deglaciation and glacial dynamics on the landscapes and geomorphology of Potter Peninsula, King George Island (Isla 25 Mayo), NW Antarctic Peninsula |
title_short |
The impact of Holocene deglaciation and glacial dynamics on the landscapes and geomorphology of Potter Peninsula, King George Island (Isla 25 Mayo), NW Antarctic Peninsula |
title_full |
The impact of Holocene deglaciation and glacial dynamics on the landscapes and geomorphology of Potter Peninsula, King George Island (Isla 25 Mayo), NW Antarctic Peninsula |
title_fullStr |
The impact of Holocene deglaciation and glacial dynamics on the landscapes and geomorphology of Potter Peninsula, King George Island (Isla 25 Mayo), NW Antarctic Peninsula |
title_full_unstemmed |
The impact of Holocene deglaciation and glacial dynamics on the landscapes and geomorphology of Potter Peninsula, King George Island (Isla 25 Mayo), NW Antarctic Peninsula |
title_sort |
impact of holocene deglaciation and glacial dynamics on the landscapes and geomorphology of potter peninsula, king george island (isla 25 mayo), nw antarctic peninsula |
publisher |
Frontiers Media SA |
publishDate |
2023 |
url |
http://dx.doi.org/10.3389/feart.2022.1073075 https://www.frontiersin.org/articles/10.3389/feart.2022.1073075/full |
long_lat |
ENVELOPE(-58.000,-58.000,-62.083,-62.083) ENVELOPE(-58.000,-58.000,-62.083,-62.083) ENVELOPE(-58.658,-58.658,-62.246,-62.246) ENVELOPE(-62.490,-62.490,-64.612,-64.612) ENVELOPE(-58.666,-58.666,-62.216,-62.216) ENVELOPE(-58.558,-58.558,-62.203,-62.203) |
geographic |
Antarctic The Antarctic Antarctic Peninsula King George Island South Shetland Islands Potter Cove 25 de Mayo isla 25 de Mayo Potter Peninsula Fourcade Fourcade Glacier Warszawa Icefield |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula King George Island South Shetland Islands Potter Cove 25 de Mayo isla 25 de Mayo Potter Peninsula Fourcade Fourcade Glacier Warszawa Icefield |
genre |
Antarc* Antarctic Antarctic Peninsula Ice cap Isla 25 de Mayo King George Island South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ice cap Isla 25 de Mayo King George Island South Shetland Islands |
op_source |
Frontiers in Earth Science volume 10 ISSN 2296-6463 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/feart.2022.1073075 |
container_title |
Frontiers in Earth Science |
container_volume |
10 |
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1795031673134383104 |