Rapid post-glacial bedrock weathering in coastal Norway
Quantifying bedrock weathering rates under diverse climate conditions is essential to understanding timescales of landscape evolution. Yet, weathering rates are often difficult to constrain, and associating a weathered landform to a specific formative environment can be complicated by overprinting o...
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/517089 2023-05-15T18:28:25+02:00 Rapid post-glacial bedrock weathering in coastal Norway Andersen, Jane Lund Margreth, Annina Fredin, Ola Linge, Henriette Goodfellow, Bradley W. Faust, Johan C. Knies, Jochen Solbakk, Terje Brook, Edward J. Scheiber, Thomas Van der Lelij, Roelant Burki, Valentin Rubensdotter, Lena Himmler, Tobias Yeşilyurt, Serdar Christl, Marcus Vockenhuber, Christof Akçar, Naki 2022-01-15 application/application/pdf https://hdl.handle.net/20.500.11850/517089 https://doi.org/10.3929/ethz-b-000517089 en eng Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.geomorph.2021.108003 info:eu-repo/semantics/altIdentifier/wos/000718569100006 http://hdl.handle.net/20.500.11850/517089 doi:10.3929/ethz-b-000517089 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International CC-BY Geomorphology, 397 Cold climate weathering Cosmogenic nuclides Saprolite Tafoni Glacial erosion Scandinavia info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftethz https://doi.org/20.500.11850/517089 https://doi.org/10.3929/ethz-b-000517089 https://doi.org/10.1016/j.geomorph.2021.108003 2023-02-13T00:58:00Z Quantifying bedrock weathering rates under diverse climate conditions is essential to understanding timescales of landscape evolution. Yet, weathering rates are often difficult to constrain, and associating a weathered landform to a specific formative environment can be complicated by overprinting of successive processes and temporally varying climate. In this study, we investigate three sites between 59 degrees N and 69 degrees N along the Norwegian coast that display grussic saprolite, tafoni, and linear weathering grooves on diverse lithologies. These weathering phenomena have been invoked as examples of geomorphic archives predating Quaternary glaciations and consequently as indicators of minimal glacial erosion. Here we apply cosmogenic nuclide chronometry to assess the recent erosional history. Our results demonstrate that all three sites experienced sufficient erosion to remove most cosmogenic nuclides formed prior to the Last Glacial Maximum. This finding is inconsistent with preservation of surficial (<1-2 m) weathered landforms under non-erosive ice during the last glacial period, while simultaneously demonstrating that post-glacial weathering and erosion rates can be locally rapid (4-10 cm kyr(-1)) in cold temperate to subarctic coastal locations. (C) 2021 The Authors. Published by Elsevier B.V. ISSN:0169-555x ISSN:1872-695X Article in Journal/Newspaper Subarctic ETH Zürich Research Collection Norway |
institution |
Open Polar |
collection |
ETH Zürich Research Collection |
op_collection_id |
ftethz |
language |
English |
topic |
Cold climate weathering Cosmogenic nuclides Saprolite Tafoni Glacial erosion Scandinavia |
spellingShingle |
Cold climate weathering Cosmogenic nuclides Saprolite Tafoni Glacial erosion Scandinavia Andersen, Jane Lund Margreth, Annina Fredin, Ola Linge, Henriette Goodfellow, Bradley W. Faust, Johan C. Knies, Jochen Solbakk, Terje Brook, Edward J. Scheiber, Thomas Van der Lelij, Roelant Burki, Valentin Rubensdotter, Lena Himmler, Tobias Yeşilyurt, Serdar Christl, Marcus Vockenhuber, Christof Akçar, Naki Rapid post-glacial bedrock weathering in coastal Norway |
topic_facet |
Cold climate weathering Cosmogenic nuclides Saprolite Tafoni Glacial erosion Scandinavia |
description |
Quantifying bedrock weathering rates under diverse climate conditions is essential to understanding timescales of landscape evolution. Yet, weathering rates are often difficult to constrain, and associating a weathered landform to a specific formative environment can be complicated by overprinting of successive processes and temporally varying climate. In this study, we investigate three sites between 59 degrees N and 69 degrees N along the Norwegian coast that display grussic saprolite, tafoni, and linear weathering grooves on diverse lithologies. These weathering phenomena have been invoked as examples of geomorphic archives predating Quaternary glaciations and consequently as indicators of minimal glacial erosion. Here we apply cosmogenic nuclide chronometry to assess the recent erosional history. Our results demonstrate that all three sites experienced sufficient erosion to remove most cosmogenic nuclides formed prior to the Last Glacial Maximum. This finding is inconsistent with preservation of surficial (<1-2 m) weathered landforms under non-erosive ice during the last glacial period, while simultaneously demonstrating that post-glacial weathering and erosion rates can be locally rapid (4-10 cm kyr(-1)) in cold temperate to subarctic coastal locations. (C) 2021 The Authors. Published by Elsevier B.V. ISSN:0169-555x ISSN:1872-695X |
format |
Article in Journal/Newspaper |
author |
Andersen, Jane Lund Margreth, Annina Fredin, Ola Linge, Henriette Goodfellow, Bradley W. Faust, Johan C. Knies, Jochen Solbakk, Terje Brook, Edward J. Scheiber, Thomas Van der Lelij, Roelant Burki, Valentin Rubensdotter, Lena Himmler, Tobias Yeşilyurt, Serdar Christl, Marcus Vockenhuber, Christof Akçar, Naki |
author_facet |
Andersen, Jane Lund Margreth, Annina Fredin, Ola Linge, Henriette Goodfellow, Bradley W. Faust, Johan C. Knies, Jochen Solbakk, Terje Brook, Edward J. Scheiber, Thomas Van der Lelij, Roelant Burki, Valentin Rubensdotter, Lena Himmler, Tobias Yeşilyurt, Serdar Christl, Marcus Vockenhuber, Christof Akçar, Naki |
author_sort |
Andersen, Jane Lund |
title |
Rapid post-glacial bedrock weathering in coastal Norway |
title_short |
Rapid post-glacial bedrock weathering in coastal Norway |
title_full |
Rapid post-glacial bedrock weathering in coastal Norway |
title_fullStr |
Rapid post-glacial bedrock weathering in coastal Norway |
title_full_unstemmed |
Rapid post-glacial bedrock weathering in coastal Norway |
title_sort |
rapid post-glacial bedrock weathering in coastal norway |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://hdl.handle.net/20.500.11850/517089 https://doi.org/10.3929/ethz-b-000517089 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Geomorphology, 397 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.geomorph.2021.108003 info:eu-repo/semantics/altIdentifier/wos/000718569100006 http://hdl.handle.net/20.500.11850/517089 doi:10.3929/ethz-b-000517089 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/20.500.11850/517089 https://doi.org/10.3929/ethz-b-000517089 https://doi.org/10.1016/j.geomorph.2021.108003 |
_version_ |
1766210884182474752 |