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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ftdatacite:10.3929/ethz-b-000517089 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 application/pdf https://dx.doi.org/10.3929/ethz-b-000517089 http://hdl.handle.net/20.500.11850/517089 en eng ETH Zurich info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Cold climate weathering Cosmogenic nuclides Saprolite Tafoni Glacial erosion Scandinavia Journal Article article-journal Text ScholarlyArticle 2022 ftdatacite https://doi.org/10.3929/ethz-b-000517089 2022-02-08T16:02:21Z 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. : Geomorphology, 397 : ISSN:0169-555x : ISSN:1872-695X Text Subarctic DataCite Metadata Store (German National Library of Science and Technology) Norway |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
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. : Geomorphology, 397 : ISSN:0169-555x : ISSN:1872-695X |
format |
Text |
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 |
ETH Zurich |
publishDate |
2022 |
url |
https://dx.doi.org/10.3929/ethz-b-000517089 http://hdl.handle.net/20.500.11850/517089 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Subarctic |
genre_facet |
Subarctic |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3929/ethz-b-000517089 |
_version_ |
1766210890294624256 |