Depositional models of lacustrine evaporites in the SE margin of the Ebro basin (Paleogene, NE Spain)

An important evaporitic sedimentation occurred during the Paleogene (Eocene to lower Oligocene) in the Barberà sector of the southeastern margin of the Tertiary Ebro Basin. This sedimentation took place in shallow lacustrine environments and was controlled by a number of factors: 1) the tectonic str...

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Autores: Ortí Cabo, Federico, Rosell, Laura (Rosell i Ortiz), Inglès i Urpinell, Montserrat, Playà i Pous, Elisabet
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2007
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:2445/16874
Acesso em linha:https://hdl.handle.net/2445/16874
Access Level:acceso abierto
Palavra-chave:Evaporites
Sedimentació fluvial
Paleogen
Ebre, Depressió de l'
River sediments
Paleogene
Ebro River Watershed (Spain)
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spelling Depositional models of lacustrine evaporites in the SE margin of the Ebro basin (Paleogene, NE Spain)Ortí Cabo, FedericoRosell, Laura (Rosell i Ortiz)Inglès i Urpinell, MontserratPlayà i Pous, ElisabetEvaporitesSedimentació fluvialPaleogenEbre, Depressió de l'EvaporitesRiver sedimentsPaleogeneEbro River Watershed (Spain)An important evaporitic sedimentation occurred during the Paleogene (Eocene to lower Oligocene) in the Barberà sector of the southeastern margin of the Tertiary Ebro Basin. This sedimentation took place in shallow lacustrine environments and was controlled by a number of factors: 1) the tectonic structuration of the margin; 2) the high calcium sulphate content in the meteoric waters coming from the marginal reliefs; 3) the semiarid climate; and 4) the development of large alluvial fans along the basin margin, which also conditioned the location of the saline lakes. The evaporites are currently composed of secondary gypsum in surface and anhydrite at depth. There are, however, vestiges of the local presence of sodium sulphates. The evaporite units, with individual thicknesses ranging between 50 and 100 m, are intercalated within various lithostratigraphic formations and exhibit a paleogeographical pattern. The units located closer to the basin margin are characterized by a massive gypsum lithofacies (originally, bioturbated gypsum) bearing chert, and also by meganodular gypsum locally (originally, meganodules of anhydrite) in association with red lutites and clastic intercalations (gypsarenites, sandstones and conglomerates). Chert, which is only linked to the thickest gypsum layers, seems to be an early diagenetic, lacustrine product. Cyclicity in these proximal units indicates the progressive development of lowsalinity, lacustrine bodies on red mud flats. At the top of some cycles, exposure episodes commonly resulted in dissolution, erosion, and the formation of edaphic features. In contrast, the units located in a more distal position with regard to the basin margin are formed by an alternation of banded-nodular gypsum and laminated gypsum layers in association with grey lutites and few clastic intercalations. These distal units formed in saline lakes with a higher ionic concentration. Exposure episodes in these lakes resulted in the formation of synsedimentary anhydrite and sabkha cycles. In some of these units, however, outer rims characterized by a lithofacies association similar to that of the proximal units occur (nodular gypsum, massive gypsum and chert nodules).Universitat de Barcelona (UB). Institut de Ciències de la Terra Jaume Almera (ICTJA). Institut de Diagnosi Ambiental i Estudis de l'Aigua (IDEA). Universitat Autonònoma de Barcelona (UAB). Consejo Superior de Investigaciones Científicas (CSIC)201120112007info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion16 p.application/pdfhttps://hdl.handle.net/2445/16874Articles 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 http://www.geologica-acta.com/pdf/vol0501a03.pdfGeologica Acta, 2007, vol. 5, núm. 1, p. 19-34cc by-sa (c) Ortí et al., 2007http://creativecommons.org/licenses/by-sa/3.0/es/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/168742026-05-29T05:05:01Z
dc.title.none.fl_str_mv Depositional models of lacustrine evaporites in the SE margin of the Ebro basin (Paleogene, NE Spain)
title Depositional models of lacustrine evaporites in the SE margin of the Ebro basin (Paleogene, NE Spain)
spellingShingle Depositional models of lacustrine evaporites in the SE margin of the Ebro basin (Paleogene, NE Spain)
Ortí Cabo, Federico
Evaporites
Sedimentació fluvial
Paleogen
Ebre, Depressió de l'
Evaporites
River sediments
Paleogene
Ebro River Watershed (Spain)
title_short Depositional models of lacustrine evaporites in the SE margin of the Ebro basin (Paleogene, NE Spain)
title_full Depositional models of lacustrine evaporites in the SE margin of the Ebro basin (Paleogene, NE Spain)
title_fullStr Depositional models of lacustrine evaporites in the SE margin of the Ebro basin (Paleogene, NE Spain)
title_full_unstemmed Depositional models of lacustrine evaporites in the SE margin of the Ebro basin (Paleogene, NE Spain)
title_sort Depositional models of lacustrine evaporites in the SE margin of the Ebro basin (Paleogene, NE Spain)
dc.creator.none.fl_str_mv Ortí Cabo, Federico
Rosell, Laura (Rosell i Ortiz)
Inglès i Urpinell, Montserrat
Playà i Pous, Elisabet
author Ortí Cabo, Federico
author_facet Ortí Cabo, Federico
Rosell, Laura (Rosell i Ortiz)
Inglès i Urpinell, Montserrat
Playà i Pous, Elisabet
author_role author
author2 Rosell, Laura (Rosell i Ortiz)
Inglès i Urpinell, Montserrat
Playà i Pous, Elisabet
author2_role author
author
author
dc.subject.none.fl_str_mv Evaporites
Sedimentació fluvial
Paleogen
Ebre, Depressió de l'
Evaporites
River sediments
Paleogene
Ebro River Watershed (Spain)
topic Evaporites
Sedimentació fluvial
Paleogen
Ebre, Depressió de l'
Evaporites
River sediments
Paleogene
Ebro River Watershed (Spain)
description An important evaporitic sedimentation occurred during the Paleogene (Eocene to lower Oligocene) in the Barberà sector of the southeastern margin of the Tertiary Ebro Basin. This sedimentation took place in shallow lacustrine environments and was controlled by a number of factors: 1) the tectonic structuration of the margin; 2) the high calcium sulphate content in the meteoric waters coming from the marginal reliefs; 3) the semiarid climate; and 4) the development of large alluvial fans along the basin margin, which also conditioned the location of the saline lakes. The evaporites are currently composed of secondary gypsum in surface and anhydrite at depth. There are, however, vestiges of the local presence of sodium sulphates. The evaporite units, with individual thicknesses ranging between 50 and 100 m, are intercalated within various lithostratigraphic formations and exhibit a paleogeographical pattern. The units located closer to the basin margin are characterized by a massive gypsum lithofacies (originally, bioturbated gypsum) bearing chert, and also by meganodular gypsum locally (originally, meganodules of anhydrite) in association with red lutites and clastic intercalations (gypsarenites, sandstones and conglomerates). Chert, which is only linked to the thickest gypsum layers, seems to be an early diagenetic, lacustrine product. Cyclicity in these proximal units indicates the progressive development of lowsalinity, lacustrine bodies on red mud flats. At the top of some cycles, exposure episodes commonly resulted in dissolution, erosion, and the formation of edaphic features. In contrast, the units located in a more distal position with regard to the basin margin are formed by an alternation of banded-nodular gypsum and laminated gypsum layers in association with grey lutites and few clastic intercalations. These distal units formed in saline lakes with a higher ionic concentration. Exposure episodes in these lakes resulted in the formation of synsedimentary anhydrite and sabkha cycles. In some of these units, however, outer rims characterized by a lithofacies association similar to that of the proximal units occur (nodular gypsum, massive gypsum and chert nodules).
publishDate 2007
dc.date.none.fl_str_mv 2007
2011
2011
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/2445/16874
url https://hdl.handle.net/2445/16874
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a http://www.geologica-acta.com/pdf/vol0501a03.pdf
Geologica Acta, 2007, vol. 5, núm. 1, p. 19-34
dc.rights.none.fl_str_mv cc by-sa (c) Ortí et al., 2007
http://creativecommons.org/licenses/by-sa/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc by-sa (c) Ortí et al., 2007
http://creativecommons.org/licenses/by-sa/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 16 p.
application/pdf
dc.publisher.none.fl_str_mv Universitat de Barcelona (UB). Institut de Ciències de la Terra Jaume Almera (ICTJA). Institut de Diagnosi Ambiental i Estudis de l'Aigua (IDEA). Universitat Autonònoma de Barcelona (UAB). Consejo Superior de Investigaciones Científicas (CSIC)
publisher.none.fl_str_mv Universitat de Barcelona (UB). Institut de Ciències de la Terra Jaume Almera (ICTJA). Institut de Diagnosi Ambiental i Estudis de l'Aigua (IDEA). Universitat Autonònoma de Barcelona (UAB). Consejo Superior de Investigaciones Científicas (CSIC)
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
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score 15,81155

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