Schmidth Hammer exposure dating (SHED): Rapid age assessment of glacial landforms in the Pyrenees

Schmidt hammer (SH) sampling of 54 10Be-dated granite surfaces from the Pyrenees reveals a clear relationship between exposure and weathering through time (n=52, R 2=0.96, P<0.01) and permits the use of the SH as a numerical dating tool. To test this 10Be-SH calibration curve, 100 surfaces were s...

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Detalhes bibliográficos
Autores: Tomkins, Matt D., Dortch, Jason M., Hughes, Philip D., Huck, Jonny J., Stimson, Andrew, Delmas, Magali, Calvet, Marc, Pallàs i Serra, Raimon
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/144064
Acesso em linha:https://hdl.handle.net/2445/144064
Access Level:acceso abierto
Palavra-chave:Granit
Pirineus
Granite
Pyrenees
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spelling Schmidth Hammer exposure dating (SHED): Rapid age assessment of glacial landforms in the PyreneesTomkins, Matt D.Dortch, Jason M.Hughes, Philip D.Huck, Jonny J.Stimson, AndrewDelmas, MagaliCalvet, MarcPallàs i Serra, RaimonGranitPirineusGranitePyreneesSchmidt hammer (SH) sampling of 54 10Be-dated granite surfaces from the Pyrenees reveals a clear relationship between exposure and weathering through time (n=52, R 2=0.96, P<0.01) and permits the use of the SH as a numerical dating tool. To test this 10Be-SH calibration curve, 100 surfaces were sampled from five ice-front positions in the Têt catchment, eastern Pyrenees, with results verified against independent 10Be and 14C ages. Gaussian modelling differentiates Holocene (9.4±0.6 ka), Younger Dryas (12.6±0.9 ka), Oldest Dryas (16.1±0.5 ka), last glacial maximum (LGM; 24.8±0.9 ka) and Würmian maximum ice extent stages (MIE; 40.9±1.1 ka). These data confirm comparable glacier lengths during the LGM and MIE (~300 m difference), in contrast to evidence from the western Pyrenees (≥15 km), reflecting the relative influence of Atlantic and Mediterranean climates. Moreover, Pyrenean glaciers advanced significantly during the LGM, with a local maximum at ~25 ka, driven by growth of the Laurentide Ice Sheet, southward advection of the polar front, and a solar radiation minimum in the Northern Hemisphere. This calibration curve is available online (http://shed.earth) to enable wider application of this method throughout the Pyrenees.Elsevier2019202020182019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion12 p.application/pdfhttps://hdl.handle.net/2445/144064Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1017/qua.2018.12Quaternary Research, 2018, vol. 90, num. 1, p. 26-37https://doi.org/10.1017/qua.2018.12cc-by-nc-nd (c) Elsevier, 2018http://creativecommons.org/licenses/by-nc-nd/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/1440642026-05-29T05:05:01Z
dc.title.none.fl_str_mv Schmidth Hammer exposure dating (SHED): Rapid age assessment of glacial landforms in the Pyrenees
title Schmidth Hammer exposure dating (SHED): Rapid age assessment of glacial landforms in the Pyrenees
spellingShingle Schmidth Hammer exposure dating (SHED): Rapid age assessment of glacial landforms in the Pyrenees
Tomkins, Matt D.
Granit
Pirineus
Granite
Pyrenees
title_short Schmidth Hammer exposure dating (SHED): Rapid age assessment of glacial landforms in the Pyrenees
title_full Schmidth Hammer exposure dating (SHED): Rapid age assessment of glacial landforms in the Pyrenees
title_fullStr Schmidth Hammer exposure dating (SHED): Rapid age assessment of glacial landforms in the Pyrenees
title_full_unstemmed Schmidth Hammer exposure dating (SHED): Rapid age assessment of glacial landforms in the Pyrenees
title_sort Schmidth Hammer exposure dating (SHED): Rapid age assessment of glacial landforms in the Pyrenees
dc.creator.none.fl_str_mv Tomkins, Matt D.
Dortch, Jason M.
Hughes, Philip D.
Huck, Jonny J.
Stimson, Andrew
Delmas, Magali
Calvet, Marc
Pallàs i Serra, Raimon
author Tomkins, Matt D.
author_facet Tomkins, Matt D.
Dortch, Jason M.
Hughes, Philip D.
Huck, Jonny J.
Stimson, Andrew
Delmas, Magali
Calvet, Marc
Pallàs i Serra, Raimon
author_role author
author2 Dortch, Jason M.
Hughes, Philip D.
Huck, Jonny J.
Stimson, Andrew
Delmas, Magali
Calvet, Marc
Pallàs i Serra, Raimon
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Granit
Pirineus
Granite
Pyrenees
topic Granit
Pirineus
Granite
Pyrenees
description Schmidt hammer (SH) sampling of 54 10Be-dated granite surfaces from the Pyrenees reveals a clear relationship between exposure and weathering through time (n=52, R 2=0.96, P<0.01) and permits the use of the SH as a numerical dating tool. To test this 10Be-SH calibration curve, 100 surfaces were sampled from five ice-front positions in the Têt catchment, eastern Pyrenees, with results verified against independent 10Be and 14C ages. Gaussian modelling differentiates Holocene (9.4±0.6 ka), Younger Dryas (12.6±0.9 ka), Oldest Dryas (16.1±0.5 ka), last glacial maximum (LGM; 24.8±0.9 ka) and Würmian maximum ice extent stages (MIE; 40.9±1.1 ka). These data confirm comparable glacier lengths during the LGM and MIE (~300 m difference), in contrast to evidence from the western Pyrenees (≥15 km), reflecting the relative influence of Atlantic and Mediterranean climates. Moreover, Pyrenean glaciers advanced significantly during the LGM, with a local maximum at ~25 ka, driven by growth of the Laurentide Ice Sheet, southward advection of the polar front, and a solar radiation minimum in the Northern Hemisphere. This calibration curve is available online (http://shed.earth) to enable wider application of this method throughout the Pyrenees.
publishDate 2018
dc.date.none.fl_str_mv 2018
2019
2019
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/144064
url https://hdl.handle.net/2445/144064
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1017/qua.2018.12
Quaternary Research, 2018, vol. 90, num. 1, p. 26-37
https://doi.org/10.1017/qua.2018.12
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier, 2018
http://creativecommons.org/licenses/by-nc-nd/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier, 2018
http://creativecommons.org/licenses/by-nc-nd/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 12 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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