BibTex format
@article{Reyes:2024:10.1016/j.quascirev.2024.108554,
author = {Reyes, A and Carlson, AE and Clark, J and Guillaume, L and Milne, GA and Tarasov, L and Carlson, ECB and He, F and Caffee, MW and Wilcken, KM and Rood, DH},
doi = {10.1016/j.quascirev.2024.108554},
journal = {Quaternary Science Reviews: the international multidisciplinary research and review journal},
title = {Timing of Cordilleran-Laurentide ice-sheet separation: implications for sea-level rise},
url = {http://dx.doi.org/10.1016/j.quascirev.2024.108554},
volume = {328},
year = {2024}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - During the last deglaciation, collapse of the saddle between the North American Cordilleran and Laurentide ice sheets led to rapid ice-sheet mass loss and separation, with meltwater discharge contributing to deglacial sea-level rise. We directly date ice-sheet separation at the end of the saddle collapse using 64 10Be exposure ages along an ∼1200-km transect of the ice-sheet suture zone. Collapse began in the south by 15.4 ± 0.4 ka and ended by 13.8 ± 0.1 ka at ∼56°N. Ice-sheet model simulations consistent with the 10Be ages find that the saddle collapse contributed 6.2–7.2 m to global mean sea-level rise from ∼15.5 ka to ∼14.0 ka, or approximately one third of global mean sea-level rise over this period. We determine 3.1–3.6 m of the saddle collapse meltwater was released during Meltwater Pulse 1A ∼14.6-14.3 ka, constituting 20–40% of this meltwater pulse's volume. Because the separation of the Cordilleran and Laurentide ice sheets occurred over 1–2 millennia, the associated release of meltwater during the saddle collapse supplied a smaller contribution to the magnitude of Meltwater Pulse 1A than has been recently proposed.
AU - Reyes,A
AU - Carlson,AE
AU - Clark,J
AU - Guillaume,L
AU - Milne,GA
AU - Tarasov,L
AU - Carlson,ECB
AU - He,F
AU - Caffee,MW
AU - Wilcken,KM
AU - Rood,DH
DO - 10.1016/j.quascirev.2024.108554
PY - 2024///
SN - 0277-3791
TI - Timing of Cordilleran-Laurentide ice-sheet separation: implications for sea-level rise
T2 - Quaternary Science Reviews: the international multidisciplinary research and review journal
UR - http://dx.doi.org/10.1016/j.quascirev.2024.108554
UR - https://www.sciencedirect.com/science/article/pii/S0277379124000556?via%3Dihub
VL - 328
ER -