Kinematics of Burial Remagnetizations in Fold-and-Thrust Belts: A Case Study From the South Pyrenean Foreland Basin (NE Spain)

[EN]This study investigates two burial‐related remagnetizations in the Jaca–Pamplona foreland basin (Southern Pyrenees): one with dual polarity and a positive reversals test, and another with only reverse polarity. These components, labeled C3 and C4 based on their mean unblocking temperatures, were...

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Autores: Calvín, Pablo, Izquierdo-Llavall, Esther, Sierra-Campos, Pablo, Beamud, Elisabet, Dekkers, Mark J., Egli, Ramon, Rodríguez-Pintó, Adriana, Larrasoaña, Juan C., Pueyo, Emilio L.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2026
País:España
Institución:Universidad de Salamanca (USAL)
Repositorio:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:dnet:gredos______::9c179b9d7adddeaa5cbe317a95365ebb
Acceso en línea:http://hdl.handle.net/10366/171385
Access Level:acceso embargado
Palabra clave:Remagnetization
Paleomagnetism
Pyrenees
2506 Geología
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spelling Kinematics of Burial Remagnetizations in Fold-and-Thrust Belts: A Case Study From the South Pyrenean Foreland Basin (NE Spain)Calvín, PabloIzquierdo-Llavall, EstherSierra-Campos, PabloBeamud, ElisabetDekkers, Mark J.Egli, RamonRodríguez-Pintó, AdrianaLarrasoaña, Juan C.Pueyo, Emilio L.RemagnetizationPaleomagnetismPyrenees2506 Geología[EN]This study investigates two burial‐related remagnetizations in the Jaca–Pamplona foreland basin (Southern Pyrenees): one with dual polarity and a positive reversals test, and another with only reverse polarity. These components, labeled C3 and C4 based on their mean unblocking temperatures, were identified from a paleomagnetic analysis of 142 sites in Eocene turbidites of the Hecho Group. Component C3 shows unblocking temperatures of 250°C–350°C, systematic reverse polarity, and a predominantly post‐folding timing. Component C4 exhibits unblocking temperatures of 250°C–550°C, dual polarity and a mainly syn‐to postfolding acquisition. The spatial distribution of C4 polarity defines WNW–ESE bands parallel to structures and younging southward. The acquisition of C4 is interpreted as a chemical remagnetization triggered by progressive burial driven by combined sedimentary and tectonic loading that increased temperatures (up to ∼250°C in the deeper northern sectors, according to previous paleotemperature studies). This thermal evolution promoted authigenic, stable single‐domain magnetite growth, beginning during the Lutetian (chron C20) and probably ending in the Rupelian (chrons C11‐C10) as uplift and exhumation progressed. In contrast, the reverse polarity and post‐folding behavior of component C3 suggest a mixed origin involving both chemical remagnetization and a thermoviscous overprint during the long chron C12r (Rupelian), contemporaneous with the youngest reverse C4 band and preceding the final exhumation of the basin. These findings highlight the complex interplay among tectonics, sedimentation, and chemical remagnetization processes in the South Pyrenean foreland, providing new insight into the timing and kinetics of remagnetization in fold‐and‐thrust belts.AGU Publicationsinfo202620262026info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10366/171385reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésPID2019‐104693GB‐I00PID2024‐157800NB‐C21PRE2020‐092425FJC2019‐041058‐IEPOS‐TNA‐MSL 2019‐007AG2021‐1Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/embargoedAccessoai:dnet:gredos______::9c179b9d7adddeaa5cbe317a95365ebb2026-06-07T06:28:51Z
dc.title.none.fl_str_mv Kinematics of Burial Remagnetizations in Fold-and-Thrust Belts: A Case Study From the South Pyrenean Foreland Basin (NE Spain)
title Kinematics of Burial Remagnetizations in Fold-and-Thrust Belts: A Case Study From the South Pyrenean Foreland Basin (NE Spain)
spellingShingle Kinematics of Burial Remagnetizations in Fold-and-Thrust Belts: A Case Study From the South Pyrenean Foreland Basin (NE Spain)
Calvín, Pablo
Remagnetization
Paleomagnetism
Pyrenees
2506 Geología
title_short Kinematics of Burial Remagnetizations in Fold-and-Thrust Belts: A Case Study From the South Pyrenean Foreland Basin (NE Spain)
title_full Kinematics of Burial Remagnetizations in Fold-and-Thrust Belts: A Case Study From the South Pyrenean Foreland Basin (NE Spain)
title_fullStr Kinematics of Burial Remagnetizations in Fold-and-Thrust Belts: A Case Study From the South Pyrenean Foreland Basin (NE Spain)
title_full_unstemmed Kinematics of Burial Remagnetizations in Fold-and-Thrust Belts: A Case Study From the South Pyrenean Foreland Basin (NE Spain)
title_sort Kinematics of Burial Remagnetizations in Fold-and-Thrust Belts: A Case Study From the South Pyrenean Foreland Basin (NE Spain)
dc.creator.none.fl_str_mv Calvín, Pablo
Izquierdo-Llavall, Esther
Sierra-Campos, Pablo
Beamud, Elisabet
Dekkers, Mark J.
Egli, Ramon
Rodríguez-Pintó, Adriana
Larrasoaña, Juan C.
Pueyo, Emilio L.
author Calvín, Pablo
author_facet Calvín, Pablo
Izquierdo-Llavall, Esther
Sierra-Campos, Pablo
Beamud, Elisabet
Dekkers, Mark J.
Egli, Ramon
Rodríguez-Pintó, Adriana
Larrasoaña, Juan C.
Pueyo, Emilio L.
author_role author
author2 Izquierdo-Llavall, Esther
Sierra-Campos, Pablo
Beamud, Elisabet
Dekkers, Mark J.
Egli, Ramon
Rodríguez-Pintó, Adriana
Larrasoaña, Juan C.
Pueyo, Emilio L.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Remagnetization
Paleomagnetism
Pyrenees
2506 Geología
topic Remagnetization
Paleomagnetism
Pyrenees
2506 Geología
description [EN]This study investigates two burial‐related remagnetizations in the Jaca–Pamplona foreland basin (Southern Pyrenees): one with dual polarity and a positive reversals test, and another with only reverse polarity. These components, labeled C3 and C4 based on their mean unblocking temperatures, were identified from a paleomagnetic analysis of 142 sites in Eocene turbidites of the Hecho Group. Component C3 shows unblocking temperatures of 250°C–350°C, systematic reverse polarity, and a predominantly post‐folding timing. Component C4 exhibits unblocking temperatures of 250°C–550°C, dual polarity and a mainly syn‐to postfolding acquisition. The spatial distribution of C4 polarity defines WNW–ESE bands parallel to structures and younging southward. The acquisition of C4 is interpreted as a chemical remagnetization triggered by progressive burial driven by combined sedimentary and tectonic loading that increased temperatures (up to ∼250°C in the deeper northern sectors, according to previous paleotemperature studies). This thermal evolution promoted authigenic, stable single‐domain magnetite growth, beginning during the Lutetian (chron C20) and probably ending in the Rupelian (chrons C11‐C10) as uplift and exhumation progressed. In contrast, the reverse polarity and post‐folding behavior of component C3 suggest a mixed origin involving both chemical remagnetization and a thermoviscous overprint during the long chron C12r (Rupelian), contemporaneous with the youngest reverse C4 band and preceding the final exhumation of the basin. These findings highlight the complex interplay among tectonics, sedimentation, and chemical remagnetization processes in the South Pyrenean foreland, providing new insight into the timing and kinetics of remagnetization in fold‐and‐thrust belts.
publishDate 2026
dc.date.none.fl_str_mv 2026
2026
2026
info
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10366/171385
url http://hdl.handle.net/10366/171385
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv PID2019‐104693GB‐I00
PID2024‐157800NB‐C21
PRE2020‐092425
FJC2019‐041058‐I
EPOS‐TNA‐MSL 2019‐007
AG2021‐1
dc.rights.none.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/embargoedAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv AGU Publications
publisher.none.fl_str_mv AGU Publications
dc.source.none.fl_str_mv reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname:Universidad de Salamanca (USAL)
instname_str Universidad de Salamanca (USAL)
reponame_str GREDOS. Repositorio Institucional de la Universidad de Salamanca
collection GREDOS. Repositorio Institucional de la Universidad de Salamanca
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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