Cosmogenic 10BE age constraints for the Wester Ross Readvance moraine: Insights into British Ice-Sheet behaviour

Jeremy D. Everest; Tom Bradwell; Chris J. Fogwill; Peter W. Kubik

doi:10.1111/j.0435-3676.2006.00279.x

Cosmogenic ¹⁰BE age constraints for the Wester Ross Readvance moraine: Insights into British Ice-Sheet behaviour

Jeremy D. Everest^*, Tom Bradwell, Chris J. Fogwill, Peter W. Kubik

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

This study presents the first absolute-age constraints from a palaeo-ice-sheet margin in western Scotland. Cosmogenic ¹⁰Be from four Lewisian gneiss boulders on the Gairloch Moraine in NW Scotland have yielded reliable exposure ages. Three of these dates, taken from a single moraine ridge, cluster around c. 15.5-18 ka BP, with a weighted mean of 16.3 ± 1.6 ka BP. These findings indicate that the last British Ice Sheet had retreated to the present-day coastline in NW Scotland by this time. It is suggested that the Wester Ross Readvance represents an ice-sheet oscillation during, or in the immediate aftermath of, Heinrich Event 1 (c. 17-18 ka BP).

Original language	English
Pages (from-to)	9-17
Number of pages	9
Journal	Geografiska Annaler, Series A: Physical Geography
Volume	88
Issue number	1
DOIs	https://doi.org/10.1111/j.0435-3676.2006.00279.x
Publication status	Published - Mar 2006
Externally published	Yes

ASJC Scopus subject areas

Geography, Planning and Development
Geology

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abstract = "This study presents the first absolute-age constraints from a palaeo-ice-sheet margin in western Scotland. Cosmogenic 10Be from four Lewisian gneiss boulders on the Gairloch Moraine in NW Scotland have yielded reliable exposure ages. Three of these dates, taken from a single moraine ridge, cluster around c. 15.5-18 ka BP, with a weighted mean of 16.3 ± 1.6 ka BP. These findings indicate that the last British Ice Sheet had retreated to the present-day coastline in NW Scotland by this time. It is suggested that the Wester Ross Readvance represents an ice-sheet oscillation during, or in the immediate aftermath of, Heinrich Event 1 (c. 17-18 ka BP).",

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Cosmogenic ¹⁰BE age constraints for the Wester Ross Readvance moraine: Insights into British Ice-Sheet behaviour

Abstract

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