Articles | Volume 3, issue 2
Geochronology, 3, 505–523, 2021
https://doi.org/10.5194/gchron-3-505-2021
Geochronology, 3, 505–523, 2021
https://doi.org/10.5194/gchron-3-505-2021

Research article 19 Oct 2021

Research article | 19 Oct 2021

Cosmogenic nuclide exposure age scatter records glacial history and processes in McMurdo Sound, Antarctica

Andrew J. Christ et al.

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Cited articles

Ackert, R. P.: Antarctic Glacial Chronology : New constraints from surface exposure dating, PhD thesis, Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution, Cambridge, Massachusetts, USA, 2000. 
Anderson, J. B.: Antarctic marine geology, Cambridge University Press, New York, USA, 1999. 
Anderson, J. T. H., Wilson, G. S., Fink, D., Lilly, K., Levy, R. H., and Townsend, D.: Reconciling marine and terrestrial evidence for post LGM ice sheet retreat in southern McMurdo Sound, Antarctica, Quaternary Sci. Rev., 157, 1–13, https://doi.org/10.1016/j.quascirev.2016.12.007, 2017. 
Anderson, J. T. H., Wilson, G. S., Selwyn Jones, R., Fink, D., and Fujioka, T.: Ice surface lowering of Skelton Glacier, Transantarctic Mountains, since the Last Glacial Maximum: Implications for retreat of grounded ice in the western Ross Sea, Quaternary Sci. Rev., 237, 106305, https://doi.org/10.1016/j.quascirev.2020.106305, 2020. 
Arndt, J. E., Schenke, H. W., Jakobsson, M., Nitsche, F. O., Buys, G., Goleby, B., Rebesco, M., Bohoyo, F., Hong, J., Black, J., Greku, R., Udintsev, G., Barrios, F., Reynoso-Peralta, W., Taisei, M., and Wigley, R.: The international bathymetric chart of the Southern Ocean (IBCSO) version 1.0-A new bathymetric compilation covering circum-Antarctic waters, Geophys. Res. Lett., 40, 3111–3117, https://doi.org/10.1002/grl.50413, 2013. 
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Short summary
Cosmogenic nuclide surface exposure dating is commonly used to constrain the timing of past glacier extents. However, Antarctic exposure age datasets are often scattered and difficult to interpret. We compile new and existing exposure ages of a glacial deposit with independently known age constraints and identify surface processes that increase or reduce the likelihood of exposure age scatter. Then we present new data for a previously unmapped and undated older deposit from the same region.