ORCID

0000-0003-2422-3252

Document Type

Abstract

Publication Date

2024

DOI

10.5194/egusphere-egu24-13612

Publication Title

EGU General Assembly 2024

Pages

EGU24-13612

Abstract

Volcanism increases when glaciers melt because isostatic rebound during deglaciation decreases the pressure on the mantle, which enhances decompression melting. Anthropogenic climate change is now causing ice sheets and valley glaciers to melt around the world and this deglaciation could stimulate volcanic activity and associated hazards in Iceland, Antarctica, Alaska, and Patagonia. However, current model predictions for volcanic activity associated with anthropogenic deglaciation in Iceland are poorly constrained, in part due to uncertainties in past volcanic output over time compared to ice sheet arrangements. Further work specifically characterizing glaciovolcanic and ice-marginal volcanoes in Iceland is needed to reconstruct volcanic output during time periods with changing ice cover. Here, we describe a previously unrecognized ice-marginal volcanic lava delta on a broad, shallow slope southeast of Langjökull and the Jarlhettur volcanic chain in Iceland’s Western Volcanic Zone.

Rights

© Authors 2024.

This work is distributed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) License.

Original Publication Citation

Putnam, A., Siebach, K., Bedford, C., Simpson, S., Rampe, E., Tamborski, J., and Thorpe, M. (2024, April 14-19). Ice-marginal lava delta in Iceland found on a nondescript shallow slope: An unexpected record of ice thickness late in deglaciation [Conference presentation abstract]. EGU General Assembly 2024, Vienna, Austria. https://doi.org/10.5194/egusphere-egu24-13612, 2024

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