Articles | Volume 14, issue 8
https://doi.org/10.5194/tc-14-2647-2020
https://doi.org/10.5194/tc-14-2647-2020
Research article
 | 
20 Aug 2020
Research article |  | 20 Aug 2020

A 14.5-million-year record of East Antarctic Ice Sheet fluctuations from the central Transantarctic Mountains, constrained with cosmogenic 3He, 10Be, 21Ne, and 26Al

Allie Balter-Kennedy, Gordon Bromley, Greg Balco, Holly Thomas, and Margaret S. Jackson

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Cited articles

Ackert, R. P.: Antarctic glacial chronology?: new constraints from surface exposure dating, PhD thesis, Woods Hole Oceanographic Institution, Massachusetts Institute of Technology, United States of America, 213 pp., 2000. 
Ackert, R. P. and Kurz, M. D.: Age and uplift rates of Sirius Group sediments in the Dominion Range, Antarctica, from surface exposure dating and geomorphology, Global Planet. Change, 42, 207–225, 2004. 
Atkins, C. B.: Geomorphological evidence of cold-based glacier activity in South Victoria Land, Antarctica, Geol. Soc. London Spec. Publ., 381, 299–318, https://doi.org/10.1144/SP381.18, 2013. 
Atkins, C. B., Barrett, P. J., and Hicock, S. R.: Cold glaciers erode and deposit: Evidence from Allan Hills, Antarctica, Geology, 30, 659–662, https://doi.org/10.1130/0091-7613(2002)030<0659:CGEADE>2.0.CO;2, 2002. 
Austermann, J., Pollard, D., Mitrovica, J. X., Moucha, R., Forte, A. M., DeConto, R. M., Rowley, D. B., and Raymo, M. E.: The impact of dynamic topography change on Antarctic ice sheet stability during the mid-Pliocene warm period, Geology, 43, 927–930, https://doi.org/10.1130/G36988.1, 2015. 
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Short summary
We describe new geologic evidence from Antarctica that demonstrates changes in East Antarctic Ice Sheet (EAIS) extent over the past ~ 15 million years. Our data show that the EAIS was a persistent feature in the Transantarctic Mountains for much of that time, including some (but not all) times when global temperature may have been warmer than today. Overall, our results comprise a long-term record of EAIS change and may provide useful constraints for ice sheet models and sea-level estimates.
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