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 ...

• Main Authors: Heredia Barión, Pablo A., Strelin, Jorge A., Roberts, Stephen J., Spiegel, Cornelia, Wacker, Lukas, Niedermann, Samuel, Bentley, Michael J., Pearson, Emma J., Czalbowski Manograsso, Nadia T., Davies, Sarah J., Schnetger, Bernhard, Grosjean, Martin, Arcusa, Stephanie, Perren, Bianca, Hocking, Emma P., Kuhn, Gerhard
• Format: Article in Journal/Newspaper
• Language: English
• Published: ETH Zurich 2023
• Subjects: Deglaciation; Geomorphological mapping; Radiocarbon dating; South Shetland islands; Stratigraphy; Glacier readvance; Antarc*; Antarctic; Antarctic Peninsula; Ice cap; Isla 25 de Mayo; King George Island; South Shetland Islands
• Online Access: https://dx.doi.org/10.3929/ethz-b-000595219; http://hdl.handle.net/20.500.11850/595219

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 ... : Frontiers in Earth Science, 10 ...