Articles | Volume 15, issue 4
https://doi.org/10.5194/se-15-387-2024
https://doi.org/10.5194/se-15-387-2024
Research article
 | 
03 Apr 2024
Research article |  | 03 Apr 2024

Fast uplift in the southern Patagonian Andes due to long- and short-term deglaciation and the asthenospheric window underneath

Veleda A. P. Muller, Pietro Sternai, and Christian Sue

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Latest update: 25 May 2024
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Short summary
Uplift rates up to 40 mm yr−1 are measured by GNSS in the southern Patagonian Icefield, a remainder of the Patagonian Ice Sheet that covered the Andes in the Last Glacial Maximum (LGM) at 26 ka. Using numerical modelling, we estimate an increase of 150 to 200 °C of the asthenospheric temperature due to the slab window under southern Patagonia, and we show that post-glacial rebound, after the long-term LGM and the short-term Little Ice Age (400 a), contributed to the modern uplift rate budget.