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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Online Access: | https://hdl.handle.net/11250/3011656 https://doi.org/10.1016/j.geomorph.2021.108003 |
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ftunivbergen:oai:bora.uib.no:11250/3011656 2023-05-15T18:28:24+02:00 Rapid post-glacial bedrock weathering in coastal Norway Andersen, Jane Lund Margreth, Annina Fredin, Ola Linge, Henriette Goodfellow, Bradley W. Faust, Johan Christoph Knies, Jochen Solbakk, Terje Brook, Edward J. Scheiber, Thomas van der Lelij, Roelant Burki, Valentin Josef Rubensdotter, Brita Lena Eleonor Fredin Himmler, Tobias Yesilyurt, Serdar Christl, Marcus Vockenhuber, Christof Akcar, Naki 2022 application/pdf https://hdl.handle.net/11250/3011656 https://doi.org/10.1016/j.geomorph.2021.108003 eng eng https://www.sciencedirect.com/science/article/pii/S0169555X21004116 Norges forskningsråd: 319849 urn:issn:0169-555X https://hdl.handle.net/11250/3011656 https://doi.org/10.1016/j.geomorph.2021.108003 cristin:1951725 Geomorphology. 2022, 397, 108003. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2021 The Author(s) 108003 Geomorphology 397 Journal article Peer reviewed 2022 ftunivbergen https://doi.org/10.1016/j.geomorph.2021.108003 2023-03-14T17:40:18Z 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°N and 69°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. publishedVersion Article in Journal/Newspaper Subarctic University of Bergen: Bergen Open Research Archive (BORA-UiB) Norway Geomorphology 397 108003 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
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°N and 69°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. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Andersen, Jane Lund Margreth, Annina Fredin, Ola Linge, Henriette Goodfellow, Bradley W. Faust, Johan Christoph Knies, Jochen Solbakk, Terje Brook, Edward J. Scheiber, Thomas van der Lelij, Roelant Burki, Valentin Josef Rubensdotter, Brita Lena Eleonor Fredin Himmler, Tobias Yesilyurt, Serdar Christl, Marcus Vockenhuber, Christof Akcar, Naki |
spellingShingle |
Andersen, Jane Lund Margreth, Annina Fredin, Ola Linge, Henriette Goodfellow, Bradley W. Faust, Johan Christoph Knies, Jochen Solbakk, Terje Brook, Edward J. Scheiber, Thomas van der Lelij, Roelant Burki, Valentin Josef Rubensdotter, Brita Lena Eleonor Fredin Himmler, Tobias Yesilyurt, Serdar Christl, Marcus Vockenhuber, Christof Akcar, Naki Rapid post-glacial bedrock weathering in coastal Norway |
author_facet |
Andersen, Jane Lund Margreth, Annina Fredin, Ola Linge, Henriette Goodfellow, Bradley W. Faust, Johan Christoph Knies, Jochen Solbakk, Terje Brook, Edward J. Scheiber, Thomas van der Lelij, Roelant Burki, Valentin Josef Rubensdotter, Brita Lena Eleonor Fredin Himmler, Tobias Yesilyurt, Serdar Christl, Marcus Vockenhuber, Christof Akcar, 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 |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3011656 https://doi.org/10.1016/j.geomorph.2021.108003 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
108003 Geomorphology 397 |
op_relation |
https://www.sciencedirect.com/science/article/pii/S0169555X21004116 Norges forskningsråd: 319849 urn:issn:0169-555X https://hdl.handle.net/11250/3011656 https://doi.org/10.1016/j.geomorph.2021.108003 cristin:1951725 Geomorphology. 2022, 397, 108003. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1016/j.geomorph.2021.108003 |
container_title |
Geomorphology |
container_volume |
397 |
container_start_page |
108003 |
_version_ |
1766210859656282112 |