Local formation of varved sediments in a karstic collapse depression of Lake Banyoles (NE Spain)

Banyoles is the largest and deepest lake of karstic-tectonic origin in the Iberian Peninsula. The lake comprises several circular sub-basins characterized by different oxygenation conditions at their hypolimnions.The multiproxy analysis of a > 5 m long sediment core combined with high resolution...

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Autores: Morellón, Mario, Anselmetti, Flavio S., Valero Garcés, Blas Lorenzo, Barreiro-Lostres, Fernando, Ariztegui, Daniel, Giralt Romeu, Santiago, Sáez, Alberto, Mata, M. Pilar
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
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:2445/66192
Acceso en línea:https://hdl.handle.net/2445/66192
Access Level:acceso abierto
Palabra clave:Banyoles (Catalunya)
Sediments (Geologia)
Carst
Banyoles (Catalonia)
Sediments (Geology)
Karst
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spelling Local formation of varved sediments in a karstic collapse depression of Lake Banyoles (NE Spain)Morellón, MarioAnselmetti, Flavio S.Valero Garcés, Blas LorenzoBarreiro-Lostres, FernandoAriztegui, DanielGiralt Romeu, SantiagoSáez, AlbertoMata, M. PilarBanyoles (Catalunya)Sediments (Geologia)CarstBanyoles (Catalonia)Sediments (Geology)KarstBanyoles is the largest and deepest lake of karstic-tectonic origin in the Iberian Peninsula. The lake comprises several circular sub-basins characterized by different oxygenation conditions at their hypolimnions.The multiproxy analysis of a > 5 m long sediment core combined with high resolution seismic stratigraphy (3.5 kHz pinger and multi-frequency Chirp surveys), allow a precise reconstruction of the evolution of a karstic depression (named B3) until present times.Local meromictic conditions in this sub-basin have been conducive to deposition and preservation of ca. 85 cm of varved sediments since the late 19th century. The onset of these conditions is likely related to lake waters eutrophication caused by increasing farming activities in the watershed. Increasing clastic input and organic productivity during the second half of the 20th century have also been recorded within the laminated sediments, revealing an intensification of human impact and warmer water temperaturesSociedad Geológica de España2015201520152015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion4 p.application/pdfhttps://hdl.handle.net/2445/66192Articles 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)InglésReproducció del document publicat a:Geogaceta, 2015, vol. 57, p. 119-122(c) Sociedad Geológica de España, 2015info:eu-repo/semantics/openAccessoai:recercat.cat:2445/661922026-05-29T05:05:01Z
dc.title.none.fl_str_mv Local formation of varved sediments in a karstic collapse depression of Lake Banyoles (NE Spain)
title Local formation of varved sediments in a karstic collapse depression of Lake Banyoles (NE Spain)
spellingShingle Local formation of varved sediments in a karstic collapse depression of Lake Banyoles (NE Spain)
Morellón, Mario
Banyoles (Catalunya)
Sediments (Geologia)
Carst
Banyoles (Catalonia)
Sediments (Geology)
Karst
title_short Local formation of varved sediments in a karstic collapse depression of Lake Banyoles (NE Spain)
title_full Local formation of varved sediments in a karstic collapse depression of Lake Banyoles (NE Spain)
title_fullStr Local formation of varved sediments in a karstic collapse depression of Lake Banyoles (NE Spain)
title_full_unstemmed Local formation of varved sediments in a karstic collapse depression of Lake Banyoles (NE Spain)
title_sort Local formation of varved sediments in a karstic collapse depression of Lake Banyoles (NE Spain)
dc.creator.none.fl_str_mv Morellón, Mario
Anselmetti, Flavio S.
Valero Garcés, Blas Lorenzo
Barreiro-Lostres, Fernando
Ariztegui, Daniel
Giralt Romeu, Santiago
Sáez, Alberto
Mata, M. Pilar
author Morellón, Mario
author_facet Morellón, Mario
Anselmetti, Flavio S.
Valero Garcés, Blas Lorenzo
Barreiro-Lostres, Fernando
Ariztegui, Daniel
Giralt Romeu, Santiago
Sáez, Alberto
Mata, M. Pilar
author_role author
author2 Anselmetti, Flavio S.
Valero Garcés, Blas Lorenzo
Barreiro-Lostres, Fernando
Ariztegui, Daniel
Giralt Romeu, Santiago
Sáez, Alberto
Mata, M. Pilar
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Banyoles (Catalunya)
Sediments (Geologia)
Carst
Banyoles (Catalonia)
Sediments (Geology)
Karst
topic Banyoles (Catalunya)
Sediments (Geologia)
Carst
Banyoles (Catalonia)
Sediments (Geology)
Karst
description Banyoles is the largest and deepest lake of karstic-tectonic origin in the Iberian Peninsula. The lake comprises several circular sub-basins characterized by different oxygenation conditions at their hypolimnions.The multiproxy analysis of a > 5 m long sediment core combined with high resolution seismic stratigraphy (3.5 kHz pinger and multi-frequency Chirp surveys), allow a precise reconstruction of the evolution of a karstic depression (named B3) until present times.Local meromictic conditions in this sub-basin have been conducive to deposition and preservation of ca. 85 cm of varved sediments since the late 19th century. The onset of these conditions is likely related to lake waters eutrophication caused by increasing farming activities in the watershed. Increasing clastic input and organic productivity during the second half of the 20th century have also been recorded within the laminated sediments, revealing an intensification of human impact and warmer water temperatures
publishDate 2015
dc.date.none.fl_str_mv 2015
2015
2015
2015
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/2445/66192
url https://hdl.handle.net/2445/66192
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a:
Geogaceta, 2015, vol. 57, p. 119-122
dc.rights.none.fl_str_mv (c) Sociedad Geológica de España, 2015
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Sociedad Geológica de España, 2015
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 4 p.
application/pdf
dc.publisher.none.fl_str_mv Sociedad Geológica de España
publisher.none.fl_str_mv Sociedad Geológica de España
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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