Articles | Volume 17, issue 12
https://doi.org/10.5194/tc-17-5459-2023
https://doi.org/10.5194/tc-17-5459-2023
Research article
 | 
21 Dec 2023
Research article |  | 21 Dec 2023

Four North American glaciers advanced past their modern positions thousands of years apart in the Holocene

Andrew G. Jones, Shaun A. Marcott, Andrew L. Gorin, Tori M. Kennedy, Jeremy D. Shakun, Brent M. Goehring, Brian Menounos, Douglas H. Clark, Matias Romero, and Marc W. Caffee

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Cited articles

Anderson, L. S., Roe, G. H., and Anderson, R. S.: The effects of interannual climate variability on the moraine record, Geology, 42, 55–58, https://doi.org/10.1130/G34791.1, 2014. 
Balco, G.: Technical note: A prototype transparent-middle-layer data management and analysis infrastructure for cosmogenic-nuclide exposure dating, Geochronology, 2, 169–175, https://doi.org/10.5194/gchron-2-169-2020, 2020 (data available at: https://version2.ice-d.org/alpine/, last access: 20 December 2023). 
Balco, G., Stone, J. O., Lifton, N. A., and Dunai, T. J.: A complete and easily accessible means of calculating surface exposure ages or erosion rates from 10Be and 26Al measurements, Quat. Geochronol., 3, 174–195, https://doi.org/10.1016/j.quageo.2007.12.001, 2008. 
Barclay, D. J., Wiles, G. C., and Calkin, P. E.: Holocene glacier fluctuations in Alaska, Quaternary Sci. Rev., 28, 2034–2048, https://doi.org/10.1016/j.quascirev.2009.01.016, 2009. 
Basagic, H. J. and Fountain, A. G.: Quantifying 20th Century Glacier Change in the Sierra Nevada, California, Arct. Antarct. Alp. Res., 43, 317–330, https://doi.org/10.1657/1938-4246-43.3.317, 2011. 
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Mountain glaciers today are fractions of their sizes 140 years ago, but how do these sizes compare to the past 11,000 years? We find that four glaciers in the United States and Canada have reversed a long-term trend of growth and retreated to positions last occupied thousands of years ago. Notably, each glacier occupies a unique position relative to its long-term history. We hypothesize that unequal modern retreat has caused the glaciers to be out of sync relative to their Holocene histories.
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