Changes in fluid regime in syn-orogenic sediments during the growth of the south Pyrenean fold and thrust belt

The eastern sector of the south Pyrenean fold and thrust belt developed during the Alpine compression and affected Upper Cretaceous to lower Oligocene foreland basin deposits. In this study, we determine the changes in fluid regime and fluid composition during the growth of this fold and thrust belt...

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Autores: Cruset, David, Cantarero, I., Vergés Masip, Jaume, John, Cédric M., Muñoz-López, D., Travé, A.
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/159682
Acceso en línea:http://hdl.handle.net/10261/159682
Access Level:acceso abierto
Palabra clave:Fluid regime
Fractures
South Pyrenean fold and thrust belt
Syn-orogenic sediments
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spelling Changes in fluid regime in syn-orogenic sediments during the growth of the south Pyrenean fold and thrust beltCruset, DavidCantarero, I.Vergés Masip, JaumeJohn, Cédric M.Muñoz-López, D.Travé, A.Fluid regimeFracturesSouth Pyrenean fold and thrust beltSyn-orogenic sedimentsThe eastern sector of the south Pyrenean fold and thrust belt developed during the Alpine compression and affected Upper Cretaceous to lower Oligocene foreland basin deposits. In this study, we determine the changes in fluid regime and fluid composition during the growth of this fold and thrust belt, integrating petrographic and geochemical data obtained from fracture-filling cements.Hydrothermal fluids at temperatures up to 154. °C, migrated from the Axial zone to the foreland basin and mixed with connate fluids in equilibrium with Eocene sea-water during lower and middle Eocene (underfilled foreland basin). As the thrust front progressively emerged, low-temperature meteoric waters migrated downwards the foreland basin and mixed at depth with the hydrothermal fluids from middle Eocene to lower Oligocene (overfilled non-marine foreland basin).The comparison of the fluid flow models from the Southern Pyrenees with other orogens worldwide, seems to indicate that the presence or absence of thick evaporitic units highly control fluid composition during the development of fold and thrust belts. Whereas in thrusts not detached along thick evaporite units, mixed fluids are progressively more depleted in δ18O and have a lower temperature and lower Fe and Sr contents as the thrust front emerges, in thrust detachments through thick evaporite units, the mixed fluids are enriched in δ18O. © 2017 Elsevier B.V.This research was performed within the framework of DGICYT Spanish Project CGL2015-66335-C2-1-R and ALPIMED Project (PIE-CSIC-201530E082), Grup Consolidat de Recerca “Geologia Sedimentària” (2014SGR-251).Peer reviewedElsevierDirección General de Investigación Científica y Técnica, DGICT (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201820182018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/159682reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.gloplacha.2017.11.001Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1596822026-05-22T06:33:51Z
dc.title.none.fl_str_mv Changes in fluid regime in syn-orogenic sediments during the growth of the south Pyrenean fold and thrust belt
title Changes in fluid regime in syn-orogenic sediments during the growth of the south Pyrenean fold and thrust belt
spellingShingle Changes in fluid regime in syn-orogenic sediments during the growth of the south Pyrenean fold and thrust belt
Cruset, David
Fluid regime
Fractures
South Pyrenean fold and thrust belt
Syn-orogenic sediments
title_short Changes in fluid regime in syn-orogenic sediments during the growth of the south Pyrenean fold and thrust belt
title_full Changes in fluid regime in syn-orogenic sediments during the growth of the south Pyrenean fold and thrust belt
title_fullStr Changes in fluid regime in syn-orogenic sediments during the growth of the south Pyrenean fold and thrust belt
title_full_unstemmed Changes in fluid regime in syn-orogenic sediments during the growth of the south Pyrenean fold and thrust belt
title_sort Changes in fluid regime in syn-orogenic sediments during the growth of the south Pyrenean fold and thrust belt
dc.creator.none.fl_str_mv Cruset, David
Cantarero, I.
Vergés Masip, Jaume
John, Cédric M.
Muñoz-López, D.
Travé, A.
author Cruset, David
author_facet Cruset, David
Cantarero, I.
Vergés Masip, Jaume
John, Cédric M.
Muñoz-López, D.
Travé, A.
author_role author
author2 Cantarero, I.
Vergés Masip, Jaume
John, Cédric M.
Muñoz-López, D.
Travé, A.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Dirección General de Investigación Científica y Técnica, DGICT (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Fluid regime
Fractures
South Pyrenean fold and thrust belt
Syn-orogenic sediments
topic Fluid regime
Fractures
South Pyrenean fold and thrust belt
Syn-orogenic sediments
description The eastern sector of the south Pyrenean fold and thrust belt developed during the Alpine compression and affected Upper Cretaceous to lower Oligocene foreland basin deposits. In this study, we determine the changes in fluid regime and fluid composition during the growth of this fold and thrust belt, integrating petrographic and geochemical data obtained from fracture-filling cements.Hydrothermal fluids at temperatures up to 154. °C, migrated from the Axial zone to the foreland basin and mixed with connate fluids in equilibrium with Eocene sea-water during lower and middle Eocene (underfilled foreland basin). As the thrust front progressively emerged, low-temperature meteoric waters migrated downwards the foreland basin and mixed at depth with the hydrothermal fluids from middle Eocene to lower Oligocene (overfilled non-marine foreland basin).The comparison of the fluid flow models from the Southern Pyrenees with other orogens worldwide, seems to indicate that the presence or absence of thick evaporitic units highly control fluid composition during the development of fold and thrust belts. Whereas in thrusts not detached along thick evaporite units, mixed fluids are progressively more depleted in δ18O and have a lower temperature and lower Fe and Sr contents as the thrust front emerges, in thrust detachments through thick evaporite units, the mixed fluids are enriched in δ18O. © 2017 Elsevier B.V.
publishDate 2018
dc.date.none.fl_str_mv 2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/159682
url http://hdl.handle.net/10261/159682
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.gloplacha.2017.11.001
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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