BRITICE-CHRONO maps and GIS data of the last British-Irish Ice Sheet 31 to 15 ka, including model reconstruction, geochronometric age spreadsheet, palaeotopographies and coastline positions ...

• Main Authors: Clark, Chris D, Ely, Jeremy C, Fabel, Derek, Bradley, Sarah L
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: BRITICE CHRONO; British Irish Ice Sheet; dating ice retreat; Ice Sheet Modelling; Binary Object; Binary Object Media Type; Binary Object File Size; Ice Sheet
• Online Access: https://dx.doi.org/10.1594/pangaea.945729; https://doi.pangaea.de/10.1594/PANGAEA.945729

The BRITICE-CHRONO project measured 639 new geochronometric ages that constrain the timing of advance and retreat of the last British-Irish Ice Sheet between 31,000 and 15,000 years ago, including across the North Sea. These ages (optically stimulated luminescence, radiocarbon and terrestrial cosmogenic nuclide methods) are made available in an excel spreadsheet, along with all sample and laboratory metadata and calibrations. Together with other published information, the ages were used to build an empirical ice sheet reconstruction at one thousand year time-steps. A poster-map and slideshow (PDF) of the reconstruction (31 to 15 ka) and the underlying GIS data (ArcGIS shapefiles) of ice extents (min, max and optimum) are made available here. An ice sheet model was nudged to fit these ice limits and the ensuing model-reconstruction is made available as a poster-map, slideshow (PDF) and movie (GIF) of the reconstruction (31 to 15 ka). The GIS data is also available including grounded ice extent and ice ...