Diatom-inferred salinity changes in relation to Holocene sea-level fluctuations in estuarine environments of Argentina

Autores
Espinosa, Marcela Alcira; Hassan, Gabriela Susana; Isla, Federico Ignacio
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The analysis of diatoms from three sedimentary sequences in the Queque´n Grande River basin (Buenos Aires province, Argentina) has allowed the reconstruction of local and regional palaeosalinity changes in relation to Holocene sea level fluctuations. An established diatom- based salinity transfer function is used in combination with autecological methods to reveal a maximum sea level between ca 7000 and 6000 14 C years BP. This marine influence was recorded in deposits exposed 2 km and 12 km upstream, but not 32 km from the mouth. The fossil diatom assemblages are characteristic of an estuarine lagoon with maximum inferred salinities of 15%. When the Holocene transgression began to flood the former valley (ca 7000 14 C years BP), brackish lagoons evolved into estuarine settings in the lower valley, but shallow freshwater ponds with salinities 54% persisted at 32 km from the mouth.
Fil: Espinosa, Marcela Alcira. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Hassan, Gabriela Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Isla, Federico Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Materia
Diatoms
Estuaries
Transfer function
Sea-level change
Holocene
Argentina
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/268912
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Diatom-inferred salinity changes in relation to Holocene sea-level fluctuations in estuarine environments of ArgentinaEspinosa, Marcela AlciraHassan, Gabriela SusanaIsla, Federico IgnacioDiatomsEstuariesTransfer functionSea-level changeHoloceneArgentinahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The analysis of diatoms from three sedimentary sequences in the Queque´n Grande River basin (Buenos Aires province, Argentina) has allowed the reconstruction of local and regional palaeosalinity changes in relation to Holocene sea level fluctuations. An established diatom- based salinity transfer function is used in combination with autecological methods to reveal a maximum sea level between ca 7000 and 6000 14 C years BP. This marine influence was recorded in deposits exposed 2 km and 12 km upstream, but not 32 km from the mouth. The fossil diatom assemblages are characteristic of an estuarine lagoon with maximum inferred salinities of 15%. When the Holocene transgression began to flood the former valley (ca 7000 14 C years BP), brackish lagoons evolved into estuarine settings in the lower valley, but shallow freshwater ponds with salinities 54% persisted at 32 km from the mouth.Fil: Espinosa, Marcela Alcira. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Hassan, Gabriela Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Isla, Federico Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaTaylor & Francis Ltd2012-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/268912Espinosa, Marcela Alcira; Hassan, Gabriela Susana; Isla, Federico Ignacio; Diatom-inferred salinity changes in relation to Holocene sea-level fluctuations in estuarine environments of Argentina; Taylor & Francis Ltd; Alcheringa; 36; 3; 9-2012; 373-3860311-5518CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/03115518.2012.657501#.U16R5leTKWMinfo:eu-repo/semantics/altIdentifier/doi/10.1080/03115518.2012.657501info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-29T11:38:50Zoai:ri.conicet.gov.ar:11336/268912instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-29 11:38:50.799CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Diatom-inferred salinity changes in relation to Holocene sea-level fluctuations in estuarine environments of Argentina
title Diatom-inferred salinity changes in relation to Holocene sea-level fluctuations in estuarine environments of Argentina
spellingShingle Diatom-inferred salinity changes in relation to Holocene sea-level fluctuations in estuarine environments of Argentina
Espinosa, Marcela Alcira
Diatoms
Estuaries
Transfer function
Sea-level change
Holocene
Argentina
title_short Diatom-inferred salinity changes in relation to Holocene sea-level fluctuations in estuarine environments of Argentina
title_full Diatom-inferred salinity changes in relation to Holocene sea-level fluctuations in estuarine environments of Argentina
title_fullStr Diatom-inferred salinity changes in relation to Holocene sea-level fluctuations in estuarine environments of Argentina
title_full_unstemmed Diatom-inferred salinity changes in relation to Holocene sea-level fluctuations in estuarine environments of Argentina
title_sort Diatom-inferred salinity changes in relation to Holocene sea-level fluctuations in estuarine environments of Argentina
dc.creator.none.fl_str_mv Espinosa, Marcela Alcira
Hassan, Gabriela Susana
Isla, Federico Ignacio
author Espinosa, Marcela Alcira
author_facet Espinosa, Marcela Alcira
Hassan, Gabriela Susana
Isla, Federico Ignacio
author_role author
author2 Hassan, Gabriela Susana
Isla, Federico Ignacio
author2_role author
author
dc.subject.none.fl_str_mv Diatoms
Estuaries
Transfer function
Sea-level change
Holocene
Argentina
topic Diatoms
Estuaries
Transfer function
Sea-level change
Holocene
Argentina
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The analysis of diatoms from three sedimentary sequences in the Queque´n Grande River basin (Buenos Aires province, Argentina) has allowed the reconstruction of local and regional palaeosalinity changes in relation to Holocene sea level fluctuations. An established diatom- based salinity transfer function is used in combination with autecological methods to reveal a maximum sea level between ca 7000 and 6000 14 C years BP. This marine influence was recorded in deposits exposed 2 km and 12 km upstream, but not 32 km from the mouth. The fossil diatom assemblages are characteristic of an estuarine lagoon with maximum inferred salinities of 15%. When the Holocene transgression began to flood the former valley (ca 7000 14 C years BP), brackish lagoons evolved into estuarine settings in the lower valley, but shallow freshwater ponds with salinities 54% persisted at 32 km from the mouth.
Fil: Espinosa, Marcela Alcira. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Hassan, Gabriela Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Isla, Federico Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
description The analysis of diatoms from three sedimentary sequences in the Queque´n Grande River basin (Buenos Aires province, Argentina) has allowed the reconstruction of local and regional palaeosalinity changes in relation to Holocene sea level fluctuations. An established diatom- based salinity transfer function is used in combination with autecological methods to reveal a maximum sea level between ca 7000 and 6000 14 C years BP. This marine influence was recorded in deposits exposed 2 km and 12 km upstream, but not 32 km from the mouth. The fossil diatom assemblages are characteristic of an estuarine lagoon with maximum inferred salinities of 15%. When the Holocene transgression began to flood the former valley (ca 7000 14 C years BP), brackish lagoons evolved into estuarine settings in the lower valley, but shallow freshwater ponds with salinities 54% persisted at 32 km from the mouth.
publishDate 2012
dc.date.none.fl_str_mv 2012-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/268912
Espinosa, Marcela Alcira; Hassan, Gabriela Susana; Isla, Federico Ignacio; Diatom-inferred salinity changes in relation to Holocene sea-level fluctuations in estuarine environments of Argentina; Taylor & Francis Ltd; Alcheringa; 36; 3; 9-2012; 373-386
0311-5518
CONICET Digital
CONICET
url http://hdl.handle.net/11336/268912
identifier_str_mv Espinosa, Marcela Alcira; Hassan, Gabriela Susana; Isla, Federico Ignacio; Diatom-inferred salinity changes in relation to Holocene sea-level fluctuations in estuarine environments of Argentina; Taylor & Francis Ltd; Alcheringa; 36; 3; 9-2012; 373-386
0311-5518
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/03115518.2012.657501#.U16R5leTKWM
info:eu-repo/semantics/altIdentifier/doi/10.1080/03115518.2012.657501
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Taylor & Francis Ltd
publisher.none.fl_str_mv Taylor & Francis Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.10058

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