Origin of the coloured karst fills in the neogene extensional system of ne iberia (Spain)

Karst fills from the onshore Penedès Basin and offshore València Trough display red, pink, orange and ochre colours. Their Mössbauer spectra indicate that Fe3+ contained in goethite is the dominant species in reddish-pink fills, whereas Fe2+ contained in dolomite and clays is more dominant in the or...

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Autores: Travé i Herrero, Anna, Rodríguez-Morillas, Noelia, Baqués Almirall, Vinyet, Playà i Pous, Elisabet, Casas i Duocastella, Lluís, Cantarero Abad, Irene, Martín, Juan Diego (Martín Martín), Gómez Rivas, Enrique, Moragas Rodriguez, Mar, Cruset Segura, David
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución: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:2445/183081
Acceso en línea:https://hdl.handle.net/2445/183081
Access Level:acceso abierto
Palabra clave:Carst
Geoquímica
Neogen
Karst
Geochemistry
Neogene
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spelling Origin of the coloured karst fills in the neogene extensional system of ne iberia (Spain)Travé i Herrero, AnnaRodríguez-Morillas, NoeliaBaqués Almirall, VinyetPlayà i Pous, ElisabetCasas i Duocastella, LluísCantarero Abad, IreneMartín, Juan Diego (Martín Martín)Gómez Rivas, EnriqueMoragas Rodriguez, MarCruset Segura, DavidCarstGeoquímicaNeogenKarstGeochemistryNeogeneKarst fills from the onshore Penedès Basin and offshore València Trough display red, pink, orange and ochre colours. Their Mössbauer spectra indicate that Fe3+ contained in goethite is the dominant species in reddish-pink fills, whereas Fe2+ contained in dolomite and clays is more dominant in the orange and ochre ones. The lower δ 13C values and higher 87Sr/86Sr ratios of the karst fills with respect to their host carbonates can reflect the input of soil-derived CO2 and an external radiogenic source into the karst system. This geochemical composition, together with the non-carbonate fraction of the fills, consists of authigenic and transported illite, illite-smectite interlayers, as well as kaolinite, chlorite, pyrite, quartz, ilmenite, magnetite, apatite and feldspar, account for a mixed residual-detrital origin of fills. This polygenic origin agrees with that of the terra rossa sediments described worldwide. The different colours of karst fills are attributed to fluctuations in the water table, which control the Eh/pH conditions in the karst system. Thus, reddish colours reflect low water table levels and oxidising episodes, and orange and ochre ones reflect high water table levels and more reducing episodes. The greenish colours of fills could be related to fluctuations in the Fe3+/Fe2+ ratio.MDPI2022202220212022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion28 p.application/pdfhttps://hdl.handle.net/2445/183081Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.3390/min11121382Minerals, 2021, vol. 11, num. 12, p. 1-28https://doi.org/10.3390/min11121382cc-by (c) Travé i Herrero, Anna et al., 2021https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1830812026-05-29T05:05:01Z
dc.title.none.fl_str_mv Origin of the coloured karst fills in the neogene extensional system of ne iberia (Spain)
title Origin of the coloured karst fills in the neogene extensional system of ne iberia (Spain)
spellingShingle Origin of the coloured karst fills in the neogene extensional system of ne iberia (Spain)
Travé i Herrero, Anna
Carst
Geoquímica
Neogen
Karst
Geochemistry
Neogene
title_short Origin of the coloured karst fills in the neogene extensional system of ne iberia (Spain)
title_full Origin of the coloured karst fills in the neogene extensional system of ne iberia (Spain)
title_fullStr Origin of the coloured karst fills in the neogene extensional system of ne iberia (Spain)
title_full_unstemmed Origin of the coloured karst fills in the neogene extensional system of ne iberia (Spain)
title_sort Origin of the coloured karst fills in the neogene extensional system of ne iberia (Spain)
dc.creator.none.fl_str_mv Travé i Herrero, Anna
Rodríguez-Morillas, Noelia
Baqués Almirall, Vinyet
Playà i Pous, Elisabet
Casas i Duocastella, Lluís
Cantarero Abad, Irene
Martín, Juan Diego (Martín Martín)
Gómez Rivas, Enrique
Moragas Rodriguez, Mar
Cruset Segura, David
author Travé i Herrero, Anna
author_facet Travé i Herrero, Anna
Rodríguez-Morillas, Noelia
Baqués Almirall, Vinyet
Playà i Pous, Elisabet
Casas i Duocastella, Lluís
Cantarero Abad, Irene
Martín, Juan Diego (Martín Martín)
Gómez Rivas, Enrique
Moragas Rodriguez, Mar
Cruset Segura, David
author_role author
author2 Rodríguez-Morillas, Noelia
Baqués Almirall, Vinyet
Playà i Pous, Elisabet
Casas i Duocastella, Lluís
Cantarero Abad, Irene
Martín, Juan Diego (Martín Martín)
Gómez Rivas, Enrique
Moragas Rodriguez, Mar
Cruset Segura, David
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Carst
Geoquímica
Neogen
Karst
Geochemistry
Neogene
topic Carst
Geoquímica
Neogen
Karst
Geochemistry
Neogene
description Karst fills from the onshore Penedès Basin and offshore València Trough display red, pink, orange and ochre colours. Their Mössbauer spectra indicate that Fe3+ contained in goethite is the dominant species in reddish-pink fills, whereas Fe2+ contained in dolomite and clays is more dominant in the orange and ochre ones. The lower δ 13C values and higher 87Sr/86Sr ratios of the karst fills with respect to their host carbonates can reflect the input of soil-derived CO2 and an external radiogenic source into the karst system. This geochemical composition, together with the non-carbonate fraction of the fills, consists of authigenic and transported illite, illite-smectite interlayers, as well as kaolinite, chlorite, pyrite, quartz, ilmenite, magnetite, apatite and feldspar, account for a mixed residual-detrital origin of fills. This polygenic origin agrees with that of the terra rossa sediments described worldwide. The different colours of karst fills are attributed to fluctuations in the water table, which control the Eh/pH conditions in the karst system. Thus, reddish colours reflect low water table levels and oxidising episodes, and orange and ochre ones reflect high water table levels and more reducing episodes. The greenish colours of fills could be related to fluctuations in the Fe3+/Fe2+ ratio.
publishDate 2021
dc.date.none.fl_str_mv 2021
2022
2022
2022
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 https://hdl.handle.net/2445/183081
url https://hdl.handle.net/2445/183081
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.3390/min11121382
Minerals, 2021, vol. 11, num. 12, p. 1-28
https://doi.org/10.3390/min11121382
dc.rights.none.fl_str_mv cc-by (c) Travé i Herrero, Anna et al., 2021
https://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Travé i Herrero, Anna et al., 2021
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 28 p.
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)
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
_version_ 1869419323884306432
score 15,812455

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