Articles | Volume 8, issue 2
https://doi.org/10.5194/gchron-8-255-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-8-255-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
05 May 2026
Research article |
| 05 May 2026
| 05 May 2026
Paired 14C–10Be exposure ages from Mount Murphy, West Antarctica: Implications for accurate and precise deglacial chronologies
Jonathan R. Adams
CORRESPONDING AUTHOR
Department of Earth Science & Engineering, Imperial College London, Exhibition Road, London, SW7 2AZ, UK
British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
Dylan H. Rood
Department of Earth Science & Engineering, Imperial College London, Exhibition Road, London, SW7 2AZ, UK
Klaus Wilcken
Australian Nuclear Science and Technology Organization, Lucas Heights, NSW 2234, Australia
Stephen J. Roberts
British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
Joanne S. Johnson
British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
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Short summary
Ice sheet mass loss is adding to sea-level rise, and is expected to increase, but by how much and how fast remains uncertain. Isotopes produced in rock at the Earth’s surface provide records of past ice sheet thinning which help predict future change but are more effective if they are precise enough to determine past changes to the nearest thousand years. Carbon-14 is a unique isotope that provides an accurate record of past change since the last ice age, however, its precision can be improved.
Ice sheet mass loss is adding to sea-level rise, and is expected to increase, but by how much...
