Increased erosion of high-elevation land during late Cenozoic: evidence from detrital thermochronology off-shore Greenland
Mountain regions at high altitudes show deeply incised glacial valleys that coexist with a high-standing low-relief landscape, whose origin is largely debated. Whether the plateaus contributed to sediment production during the late Cenozoic is a currently debated issue in glacial geomorphology and p...
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NATURE PORTFOLIO
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Online Access: | http://hdl.handle.net/11577/3454245 https://doi.org/10.1038/s41598-022-14129-6 |
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ftunivpadovairis:oai:www.research.unipd.it:11577/3454245 2024-04-14T08:12:19+00:00 Increased erosion of high-elevation land during late Cenozoic: evidence from detrital thermochronology off-shore Greenland Olivetti, Valerio Cattò, Silvia Zattin, Massimiliano Olivetti, Valerio Cattò, Silvia Zattin, Massimiliano 2022 http://hdl.handle.net/11577/3454245 https://doi.org/10.1038/s41598-022-14129-6 eng eng NATURE PORTFOLIO info:eu-repo/semantics/altIdentifier/pmid/35705648 info:eu-repo/semantics/altIdentifier/wos/WOS:000811780200009 volume:12 issue:1 firstpage:9932 journal:SCIENTIFIC REPORTS http://hdl.handle.net/11577/3454245 doi:10.1038/s41598-022-14129-6 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85132166668 info:eu-repo/semantics/openAccess Greenland Human Environment Geologic Sediments info:eu-repo/semantics/article 2022 ftunivpadovairis https://doi.org/10.1038/s41598-022-14129-6 2024-03-21T18:47:41Z Mountain regions at high altitudes show deeply incised glacial valleys that coexist with a high-standing low-relief landscape, whose origin is largely debated. Whether the plateaus contributed to sediment production during the late Cenozoic is a currently debated issue in glacial geomorphology and paleoclimatology. In this study, we used detrital apatite fission-track dating of marine sediments to trace provenance and spatial variation in focused erosion over the last 7 million years. The decomposition of age distributions into populations reveals that, moving upwards through the sections, two young populations get younger, while two older populations get progressively older. We interpreted these trends as the effect of glacial erosion on the valley floors and an increased sediment contribution from the high elevations. To test this hypothesis, we compared the measured ages with synthetic age distributions, which represented a change in the elevation of focused erosion. We conclude that the central-eastern Greenland region is the main source of sediments, and in addition to enhanced valley incision, sediments have also been sourced from progressively higher elevations since 7 Ma. The ageing trend provides an unusual case in detrital thermochronology and a strong evidence that intensified Quaternary glaciations amplify the erosional process both in valley bottoms and at high elevations. Article in Journal/Newspaper Greenland Padua Research Archive (IRIS - Università degli Studi di Padova) Greenland Scientific Reports 12 1 |
institution |
Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
op_collection_id |
ftunivpadovairis |
language |
English |
topic |
Greenland Human Environment Geologic Sediments |
spellingShingle |
Greenland Human Environment Geologic Sediments Olivetti, Valerio Cattò, Silvia Zattin, Massimiliano Increased erosion of high-elevation land during late Cenozoic: evidence from detrital thermochronology off-shore Greenland |
topic_facet |
Greenland Human Environment Geologic Sediments |
description |
Mountain regions at high altitudes show deeply incised glacial valleys that coexist with a high-standing low-relief landscape, whose origin is largely debated. Whether the plateaus contributed to sediment production during the late Cenozoic is a currently debated issue in glacial geomorphology and paleoclimatology. In this study, we used detrital apatite fission-track dating of marine sediments to trace provenance and spatial variation in focused erosion over the last 7 million years. The decomposition of age distributions into populations reveals that, moving upwards through the sections, two young populations get younger, while two older populations get progressively older. We interpreted these trends as the effect of glacial erosion on the valley floors and an increased sediment contribution from the high elevations. To test this hypothesis, we compared the measured ages with synthetic age distributions, which represented a change in the elevation of focused erosion. We conclude that the central-eastern Greenland region is the main source of sediments, and in addition to enhanced valley incision, sediments have also been sourced from progressively higher elevations since 7 Ma. The ageing trend provides an unusual case in detrital thermochronology and a strong evidence that intensified Quaternary glaciations amplify the erosional process both in valley bottoms and at high elevations. |
author2 |
Olivetti, Valerio Cattò, Silvia Zattin, Massimiliano |
format |
Article in Journal/Newspaper |
author |
Olivetti, Valerio Cattò, Silvia Zattin, Massimiliano |
author_facet |
Olivetti, Valerio Cattò, Silvia Zattin, Massimiliano |
author_sort |
Olivetti, Valerio |
title |
Increased erosion of high-elevation land during late Cenozoic: evidence from detrital thermochronology off-shore Greenland |
title_short |
Increased erosion of high-elevation land during late Cenozoic: evidence from detrital thermochronology off-shore Greenland |
title_full |
Increased erosion of high-elevation land during late Cenozoic: evidence from detrital thermochronology off-shore Greenland |
title_fullStr |
Increased erosion of high-elevation land during late Cenozoic: evidence from detrital thermochronology off-shore Greenland |
title_full_unstemmed |
Increased erosion of high-elevation land during late Cenozoic: evidence from detrital thermochronology off-shore Greenland |
title_sort |
increased erosion of high-elevation land during late cenozoic: evidence from detrital thermochronology off-shore greenland |
publisher |
NATURE PORTFOLIO |
publishDate |
2022 |
url |
http://hdl.handle.net/11577/3454245 https://doi.org/10.1038/s41598-022-14129-6 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/35705648 info:eu-repo/semantics/altIdentifier/wos/WOS:000811780200009 volume:12 issue:1 firstpage:9932 journal:SCIENTIFIC REPORTS http://hdl.handle.net/11577/3454245 doi:10.1038/s41598-022-14129-6 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85132166668 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41598-022-14129-6 |
container_title |
Scientific Reports |
container_volume |
12 |
container_issue |
1 |
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1796310107390214144 |