Articles | Volume 6, issue 3
https://doi.org/10.5194/gchron-6-409-2024
https://doi.org/10.5194/gchron-6-409-2024
Research article
 | 
22 Jul 2024
Research article |  | 22 Jul 2024

New age constraints reveal moraine stabilization thousands of years after deposition during the last deglaciation of western New York, USA

Karlee K. Prince, Jason P. Briner, Caleb K. Walcott, Brooke M. Chase, Andrew L. Kozlowski, Tammy M. Rittenour, and Erica P. Yang

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Cited articles

Balco, G., Stone, J. O. H., Porter, S. C., and Caffee, M. W.: Cosmogenic-nuclide ages for New England coastal moraines, Martha's Vineyard and Cape Cod, Massachusetts, USA, Quaternary Sci. Rev., 21, 2127–2135, https://doi.org/10.1016/S0277-3791(02)00085-9, 2002. 
Balco, G., Briner, J., Finkel, R. C., Rayburn, J. A., Ridge, C., and Schaefer, J. M.: Regional beryllium-10 production rate calibration for late-glacial northeastern North America, Quat. Geochronol., 4, 93–107, https://doi.org/10.1016/j.quageo.2008.09.001, 2009. 
Barth, A. M., Marcott, S. A., Licciardi, J. M., and Shakun, J. D.: Deglacial Thinning of the Laurentide Ice Sheet in the Adirondack Mountains, New York, USA, Revealed by 36Cl Exposure Dating, Paleoceanogr. Paleoclim., 34, 946–953, https://doi.org/10.1029/2018PA003477, 2019. 
Bird, B. and Kozlowski, A.: Late Quaternary Reconstruction of Lake Iroquois in the Ontario Basin of New York. New York State Museum Map & Chart 80, https://www.nysm.nysed.gov/sites/default/files/mc80_iroquois.pdf (last access: 29 March 2022), 2016. 
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Short summary
We fill a spatial data gap in the ice sheet retreat history of the Laurentide Ice Sheet after the Last Glacial Maximum and investigate a hypothesis that the ice sheet re-advanced into western New York, USA, at ~13 ka. With radiocarbon and optically stimulated luminescence (OSL) dating, we find that ice began retreating from its maximum extent after 20 ka, but glacial ice persisted in glacial landforms until ~15–14 ka when they finally stabilized. We find no evidence of a re-advance at ~13 ka.