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...
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| Format: | Article |
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Frontiers Media S.A.
2023-01-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.1073075/full |
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| author | Pablo A. Heredia Barión Pablo A. Heredia Barión Pablo A. Heredia Barión Jorge A. Strelin Jorge A. Strelin Stephen J. Roberts Cornelia Spiegel Lukas Wacker Samuel Niedermann Michael J. Bentley Emma J. Pearson Nadia T. Manograsso Czalbowski Nadia T. Manograsso Czalbowski Sarah J. Davies Bernhard Schnetger Martin Grosjean Stephanie Arcusa Bianca Perren Emma P. Hocking Gerhard Kuhn Gerhard Kuhn |
| author_facet | Pablo A. Heredia Barión Pablo A. Heredia Barión Pablo A. Heredia Barión Jorge A. Strelin Jorge A. Strelin Stephen J. Roberts Cornelia Spiegel Lukas Wacker Samuel Niedermann Michael J. Bentley Emma J. Pearson Nadia T. Manograsso Czalbowski Nadia T. Manograsso Czalbowski Sarah J. Davies Bernhard Schnetger Martin Grosjean Stephanie Arcusa Bianca Perren Emma P. Hocking Gerhard Kuhn Gerhard Kuhn |
| author_sort | Pablo A. Heredia Barión |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-11T01:02:14Z |
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| id | doaj.art-a04b4f99f3c24c77ab4121765722ad76 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-11T01:02:14Z |
| publishDate | 2023-01-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Earth Science |
| spelling | doaj.art-a04b4f99f3c24c77ab4121765722ad762023-01-04T15:08:25ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-01-011010.3389/feart.2022.10730751073075The impact of Holocene deglaciation and glacial dynamics on the landscapes and geomorphology of Potter Peninsula, King George Island (Isla 25 Mayo), NW Antarctic PeninsulaPablo A. Heredia Barión0Pablo A. Heredia Barión1Pablo A. Heredia Barión2Jorge A. Strelin3Jorge A. Strelin4Stephen J. Roberts5Cornelia Spiegel6Lukas Wacker7Samuel Niedermann8Michael J. Bentley9Emma J. Pearson10Nadia T. Manograsso Czalbowski11Nadia T. Manograsso Czalbowski12Sarah J. Davies13Bernhard Schnetger14Martin Grosjean15Stephanie Arcusa16Bianca Perren17Emma P. Hocking18Gerhard Kuhn19Gerhard Kuhn20Alfred-Wegener-Institut Helmholtz-Zentrum für Polar und Meeresforschung Geosciences Division, Bremerhaven, GermanyDepartment of Geosciences, University of Bremen, Bremen, GermanyCentro de Investigaciones en Ciencias de la Tierra (CONICET-UNC), Córdoba, ArgentinaCentro de Investigaciones en Ciencias de la Tierra (CONICET-UNC), Córdoba, ArgentinaInstituto Antártico Argentino, Convenio MREC—Universidad Nacional de Córdoba, Córdoba, ArgentinaBritish Antarctic Survey (BAS), Natural Environmental Research Council (NERC), Cambridge, United KingdomDepartment of Geosciences, University of Bremen, Bremen, GermanyLaboratory of Ion Beam Physics, ETH Zürich, Zürich, SwitzerlandDeutsches GeoForschungsZentrum GFZ, Potsdam, GermanyDepartment of Geography, Durham University, Durham, United KingdomSchool of Geography, Politics and Sociology, Newcastle University, Newcastle upon Tyne, United Kingdom0Instituto Antártico Argentino (IAA), Buenos Aires, Provincia de Buenos Aires, Argentina1Department of Geography and Earth Sciences, Aberystwyth University, Aberystwyth, United Kingdom1Department of Geography and Earth Sciences, Aberystwyth University, Aberystwyth, United Kingdom2Institute for Chemistry and Biology of the Marine Environment (ICBM), Oldenburg, Germany3Institute of Geography and Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland3Institute of Geography and Oeschger Centre for Climate Change Research, University of Bern, Bern, SwitzerlandBritish Antarctic Survey (BAS), Natural Environmental Research Council (NERC), Cambridge, United Kingdom4Department of Geography, Northumbria University, Newcastle upon Tyne, United KingdomAlfred-Wegener-Institut Helmholtz-Zentrum für Polar und Meeresforschung Geosciences Division, Bremerhaven, GermanyDepartment of Geosciences, University of Bremen, Bremen, GermanyThe 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.https://www.frontiersin.org/articles/10.3389/feart.2022.1073075/fulldeglaciationgeomorphological mappingradiocarbon datingSouth Shetland islandsstratigraphyglacier readvance |
| spellingShingle | Pablo A. Heredia Barión Pablo A. Heredia Barión Pablo A. Heredia Barión Jorge A. Strelin Jorge A. Strelin Stephen J. Roberts Cornelia Spiegel Lukas Wacker Samuel Niedermann Michael J. Bentley Emma J. Pearson Nadia T. Manograsso Czalbowski Nadia T. Manograsso Czalbowski Sarah J. Davies Bernhard Schnetger Martin Grosjean Stephanie Arcusa Bianca Perren Emma P. Hocking Gerhard Kuhn Gerhard Kuhn 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 Frontiers in Earth Science deglaciation geomorphological mapping radiocarbon dating South Shetland islands stratigraphy glacier readvance |
| 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_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_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_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 |
| topic | deglaciation geomorphological mapping radiocarbon dating South Shetland islands stratigraphy glacier readvance |
| url | https://www.frontiersin.org/articles/10.3389/feart.2022.1073075/full |
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