New constraints on Late Pleistocene relative sea-level changes in northwest Scotland- Beach to Basins: GIA Feedbacks

Best, Louise ORCID: 0000-0003-3731-054X, Simms, Alexander R, Bradwell, Tom, Regina, DeWitt, Lloyd, Jeremy, Bradley, Sarah, Ely, Jeremy, Kachuck, Samuel and Small, David (2023) New constraints on Late Pleistocene relative sea-level changes in northwest Scotland- Beach to Basins: GIA Feedbacks. In: XXI Congress of the International Union for Quaternary Research, 13-20 July 2023, Rome. (Unpublished)

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Abstract

Reconstruction of past ice sheet behaviour and relative sea-level changes provide important analogues of how contemporary systems may respond to climate change. Due to the presence of the British and Irish Ice Sheet and the Minch Ice Stream during the Last Glacial Maximum, the northwest of Scotland provides critical records for testing models of the interplay between ice-sheet retreat, glacio-isostatic adjustment, and relative sea-level changes. We provide new constraints on Late Pleistocene (~17-14 ka) relative sea-level limits and changes from raised beaches and isolation basins along the former Minch Ice Stream. These features provide ages of the first ice-free conditions and the oldest relative sea-level records following the last glacial maximum. Such data are key to improving GIA models for this region, whose estimates of relative sea-level change deviate by as much as 100 m during this time period. By improving the understanding of sea-level change along the former ice stream, we can also investigate the importance of sea-level feedbacks to marine-based ice sheets during their retreat, providing insights into potential behaviours of contemporary marine-based ice sheets.

Item Type:	Conference or Workshop Item (Lecture)
Subjects:	G Geography. Anthropology. Recreation > G Geography (General) G Geography. Anthropology. Recreation > GB Physical geography G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions:	Schools and Research Institutes > School of Education and Science
Depositing User:	Louise Best
Date Deposited:	06 Sep 2024 13:36
Last Modified:	06 Sep 2024 13:36
URI:	https://eprints.glos.ac.uk/id/eprint/14351

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