Controls on subaerial erosion rates in Antarctica
Erosion rates offer insight on landscape development and the relative importance of chemical and physical processes of weathering. Minimal chemical weathering makes Antarctica an ideal location in which to compare the physical weathering of carbonate rocks to other lithologies. Here we report the fi...
Published in: | Earth and Planetary Science Letters |
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Online Access: | https://nrl.northumbria.ac.uk/id/eprint/34501/ https://doi.org/10.1016/j.epsl.2018.08.018 https://nrl.northumbria.ac.uk/id/eprint/34501/7/1-s2.0-S0012821X18304771-main.pdf https://nrl.northumbria.ac.uk/id/eprint/34501/1/Marrero%20et%20al%20-%20Controls%20on%20subaerial%20erosion%20rates%20in%20Antarctica%20AAM.pdf |
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ftunivnorthumb:oai:nrl.northumbria.ac.uk:34501 2023-05-15T13:56:54+02:00 Controls on subaerial erosion rates in Antarctica Marrero, Shasta Hein, Andrew Naylor, Mark Shanks, Richard Winter, Kate Woodward, John Dunning, Stuart Westoby, Matt Sugden, David 2018-11-01 text https://nrl.northumbria.ac.uk/id/eprint/34501/ https://doi.org/10.1016/j.epsl.2018.08.018 https://nrl.northumbria.ac.uk/id/eprint/34501/7/1-s2.0-S0012821X18304771-main.pdf https://nrl.northumbria.ac.uk/id/eprint/34501/1/Marrero%20et%20al%20-%20Controls%20on%20subaerial%20erosion%20rates%20in%20Antarctica%20AAM.pdf en eng Elsevier https://nrl.northumbria.ac.uk/id/eprint/34501/7/1-s2.0-S0012821X18304771-main.pdf https://nrl.northumbria.ac.uk/id/eprint/34501/1/Marrero%20et%20al%20-%20Controls%20on%20subaerial%20erosion%20rates%20in%20Antarctica%20AAM.pdf Marrero, Shasta, Hein, Andrew, Naylor, Mark, Shanks, Richard, Winter, Kate, Woodward, John, Dunning, Stuart, Westoby, Matt and Sugden, David (2018) Controls on subaerial erosion rates in Antarctica. Earth and Planetary Science Letters, 501. pp. 56-66. ISSN 0012-821X cc_by_4_0 CC-BY F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2018 ftunivnorthumb https://doi.org/10.1016/j.epsl.2018.08.018 2022-09-25T06:07:21Z Erosion rates offer insight on landscape development and the relative importance of chemical and physical processes of weathering. Minimal chemical weathering makes Antarctica an ideal location in which to compare the physical weathering of carbonate rocks to other lithologies. Here we report the first cosmogenic nuclide-derived erosion rates for carbonate rocks in Antarctica. Carbonate samples collected in the southernmost Ellsworth Mountains reflect a 36Cl erosion rate of 0.22 ± 0.02 mm/ka. This erosion rate is consistent with other reported Antarctic erosion rates, but is lower than 36Cl erosion rates derived from other arid regions in the world. These results are integrated with a continent-wide reanalysis of 28 erosion rate studies (>200 measurements), which comprise numerous rock types and other cosmogenic nuclides. By combining cosmogenic nuclide-derived erosion rates across studies, the larger trends provide insight into factors (e.g. lithology, glacial history, and availability of abrasive material) affecting subaerial erosion rates in Antarctica. Statistical analysis of the compiled data set shows differences based on lithology, with sandstone having the largest range of erosion rates. The compiled data also reveals higher erosion rates in areas with a large potential sediment supply, like the Dry Valleys. Samples collected from boulders yield lower erosion rates than those collected from bedrock, likely due to a combination of physical processes that affect boulders and bedrock differently, and glacial history, which can affect the apparent cosmogenic-nuclide derived erosion rate. Article in Journal/Newspaper Antarc* Antarctic Antarctica Northumbria University, Newcastle: Northumbria Research Link (NRL) Antarctic Ellsworth Mountains ENVELOPE(-85.000,-85.000,-78.750,-78.750) Earth and Planetary Science Letters 501 56 66 |
institution |
Open Polar |
collection |
Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
English |
topic |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F800 Physical and Terrestrial Geographical and Environmental Sciences Marrero, Shasta Hein, Andrew Naylor, Mark Shanks, Richard Winter, Kate Woodward, John Dunning, Stuart Westoby, Matt Sugden, David Controls on subaerial erosion rates in Antarctica |
topic_facet |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
description |
Erosion rates offer insight on landscape development and the relative importance of chemical and physical processes of weathering. Minimal chemical weathering makes Antarctica an ideal location in which to compare the physical weathering of carbonate rocks to other lithologies. Here we report the first cosmogenic nuclide-derived erosion rates for carbonate rocks in Antarctica. Carbonate samples collected in the southernmost Ellsworth Mountains reflect a 36Cl erosion rate of 0.22 ± 0.02 mm/ka. This erosion rate is consistent with other reported Antarctic erosion rates, but is lower than 36Cl erosion rates derived from other arid regions in the world. These results are integrated with a continent-wide reanalysis of 28 erosion rate studies (>200 measurements), which comprise numerous rock types and other cosmogenic nuclides. By combining cosmogenic nuclide-derived erosion rates across studies, the larger trends provide insight into factors (e.g. lithology, glacial history, and availability of abrasive material) affecting subaerial erosion rates in Antarctica. Statistical analysis of the compiled data set shows differences based on lithology, with sandstone having the largest range of erosion rates. The compiled data also reveals higher erosion rates in areas with a large potential sediment supply, like the Dry Valleys. Samples collected from boulders yield lower erosion rates than those collected from bedrock, likely due to a combination of physical processes that affect boulders and bedrock differently, and glacial history, which can affect the apparent cosmogenic-nuclide derived erosion rate. |
format |
Article in Journal/Newspaper |
author |
Marrero, Shasta Hein, Andrew Naylor, Mark Shanks, Richard Winter, Kate Woodward, John Dunning, Stuart Westoby, Matt Sugden, David |
author_facet |
Marrero, Shasta Hein, Andrew Naylor, Mark Shanks, Richard Winter, Kate Woodward, John Dunning, Stuart Westoby, Matt Sugden, David |
author_sort |
Marrero, Shasta |
title |
Controls on subaerial erosion rates in Antarctica |
title_short |
Controls on subaerial erosion rates in Antarctica |
title_full |
Controls on subaerial erosion rates in Antarctica |
title_fullStr |
Controls on subaerial erosion rates in Antarctica |
title_full_unstemmed |
Controls on subaerial erosion rates in Antarctica |
title_sort |
controls on subaerial erosion rates in antarctica |
publisher |
Elsevier |
publishDate |
2018 |
url |
https://nrl.northumbria.ac.uk/id/eprint/34501/ https://doi.org/10.1016/j.epsl.2018.08.018 https://nrl.northumbria.ac.uk/id/eprint/34501/7/1-s2.0-S0012821X18304771-main.pdf https://nrl.northumbria.ac.uk/id/eprint/34501/1/Marrero%20et%20al%20-%20Controls%20on%20subaerial%20erosion%20rates%20in%20Antarctica%20AAM.pdf |
long_lat |
ENVELOPE(-85.000,-85.000,-78.750,-78.750) |
geographic |
Antarctic Ellsworth Mountains |
geographic_facet |
Antarctic Ellsworth Mountains |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/34501/7/1-s2.0-S0012821X18304771-main.pdf https://nrl.northumbria.ac.uk/id/eprint/34501/1/Marrero%20et%20al%20-%20Controls%20on%20subaerial%20erosion%20rates%20in%20Antarctica%20AAM.pdf Marrero, Shasta, Hein, Andrew, Naylor, Mark, Shanks, Richard, Winter, Kate, Woodward, John, Dunning, Stuart, Westoby, Matt and Sugden, David (2018) Controls on subaerial erosion rates in Antarctica. Earth and Planetary Science Letters, 501. pp. 56-66. ISSN 0012-821X |
op_rights |
cc_by_4_0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.epsl.2018.08.018 |
container_title |
Earth and Planetary Science Letters |
container_volume |
501 |
container_start_page |
56 |
op_container_end_page |
66 |
_version_ |
1766264492937707520 |