Cooper, CL, Savov, IP, Patton, H et al. (4 more authors) (2020) Is there a Climatic Control on Icelandic Volcanism? Quaternary Science Advances, 1. 100004. ISSN 2666-0334
Abstract
The evidence for periods of increased volcanic activity following deglaciation, such as following ice sheet retreat after the Last Glacial Maximum, has been examined in several formerly glaciated areas, including Iceland, Alaska, and the Andean Southern Volcanic Zone. Here we present new evidence supporting the theory that during episodes of cooling in the Holocene, Icelandic volcanic activity decreased. By examining proximal and distal tephra records from Iceland spanning the last 12,500 years, we link two observed tephra minima to documented periods of climatic cooling and glacial advance, at 8.3 to 8 and 5.2 to 4.9 cal kyr BP. We simulate these periods in atmosphere-ocean and ice sheet models to assess the potential validity of the postglacial ‘unloading effect’ on Icelandic volcanic systems. We conclude that an increase in glacial cover may have decreased shallow magma ascent rates, thus limiting eruption potential and producing apparent quiescent periods in proximal and distal tephra records. However, several major uncertainties remain regarding the theory, including geographical and temporal preservation biases and the importance of any unloading effects against other factors, and these will require more prolonged investigation in future research.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 The Author(s). This is an open access article under the terms of the Creative Commons Attribution License (CC-BY-NC-ND 4.0). |
Keywords: | unloading effect; isostasy; deglaciation; crustal loading; volcanism |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst for Climate & Atmos Science (ICAS) (Leeds) The University of Leeds > Faculty of Environment (Leeds) > School of Geography (Leeds) > Ecology & Global Change (Leeds) |
Funding Information: | Funder Grant number NERC UNSPECIFIED NERC (Natural Environment Research Council) NE/K008536/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 13 May 2020 13:22 |
Last Modified: | 24 Feb 2025 11:58 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.qsa.2020.100004 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:160689 |