Negative sea level oscillation in Bahía Blanca Estuary related to a Global Climatic Change around 2,650 yr B.P

Autores
Gomez, Eduardo Alberto; Martinez, D. E.; Borel, Claudia Marcela; Guerstein, Gladys Raquel; Cusminsky, Gabriela Catalina
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Bathymetric and side scan sonar surveys, sedimentological analyses and boreholes carried out in the external zone of Bahía Blanca Estuary, determined the regional presence of cohesive fine-stratified layers cropping out at depths of up to 17 m below the present mean sea level. Sedimentological and micropalaeontological studies carried out on the most representative core give evidence of an alternating environmental energy during deposition as it currently occurs in muddy tidal plains. The lower core section consists of sediments which are deposited in a restricted intertidal environment. The middle section represents an intertidal environment which is more strongly influenced by the action of tidal currents as it currently occurs in tidal flats in close relation with a channel system. The upper section shows the gradual passage to present conditions (strong tidal currents). The core lower section (¹⁴ C 6350 yr B.P.) could have been deposited before the maximum Holocene transgression while its middle section (¹⁴ C 2460 yr B.P.) indicates the occurrence of an important negative mean sea-level oscillation that is correlated with evidence emerging from the coasts of southern Argentina and central-southern Brazil. The magnitude of this negative oscillation below the current sea level may be correlated with the worldwide climatic change that occurred around 2650 yr B.P. This suggests that the consequences resulting from relatively short perturbations in the global climate are more important than heretofore believed.
Fil: Gomez, Eduardo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
Fil: Martinez, D. E.. Universidad Nacional del Sur; Argentina
Fil: Borel, Claudia Marcela. Universidad Nacional del Sur; Argentina
Fil: Guerstein, Gladys Raquel. Universidad Nacional del Sur; Argentina
Fil: Cusminsky, Gabriela Catalina. Universidad Nacional del Comahue; Argentina
Materia
Sedimentology
Micropaleontology
Sea Level Fluctuations
Holocene
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:11336/30593
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Negative sea level oscillation in Bahía Blanca Estuary related to a Global Climatic Change around 2,650 yr B.PGomez, Eduardo AlbertoMartinez, D. E.Borel, Claudia MarcelaGuerstein, Gladys RaquelCusminsky, Gabriela CatalinaSedimentologyMicropaleontologySea Level FluctuationsHolocenehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Bathymetric and side scan sonar surveys, sedimentological analyses and boreholes carried out in the external zone of Bahía Blanca Estuary, determined the regional presence of cohesive fine-stratified layers cropping out at depths of up to 17 m below the present mean sea level. Sedimentological and micropalaeontological studies carried out on the most representative core give evidence of an alternating environmental energy during deposition as it currently occurs in muddy tidal plains. The lower core section consists of sediments which are deposited in a restricted intertidal environment. The middle section represents an intertidal environment which is more strongly influenced by the action of tidal currents as it currently occurs in tidal flats in close relation with a channel system. The upper section shows the gradual passage to present conditions (strong tidal currents). The core lower section (¹⁴ C 6350 yr B.P.) could have been deposited before the maximum Holocene transgression while its middle section (¹⁴ C 2460 yr B.P.) indicates the occurrence of an important negative mean sea-level oscillation that is correlated with evidence emerging from the coasts of southern Argentina and central-southern Brazil. The magnitude of this negative oscillation below the current sea level may be correlated with the worldwide climatic change that occurred around 2650 yr B.P. This suggests that the consequences resulting from relatively short perturbations in the global climate are more important than heretofore believed.Fil: Gomez, Eduardo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; ArgentinaFil: Martinez, D. E.. Universidad Nacional del Sur; ArgentinaFil: Borel, Claudia Marcela. Universidad Nacional del Sur; ArgentinaFil: Guerstein, Gladys Raquel. Universidad Nacional del Sur; ArgentinaFil: Cusminsky, Gabriela Catalina. Universidad Nacional del Comahue; ArgentinaCoastal Education & Research Foundation2006-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/30593Gomez, Eduardo Alberto; Martinez, D. E.; Borel, Claudia Marcela; Guerstein, Gladys Raquel; Cusminsky, Gabriela Catalina; Negative sea level oscillation in Bahía Blanca Estuary related to a Global Climatic Change around 2,650 yr B.P; Coastal Education & Research Foundation; Journal Of Coastal Research; 39; 12-2006; 181-1850749-0208CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.jstor.org/stable/25741558info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:03:13Zoai:ri.conicet.gov.ar:11336/30593instacron: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:34982025-09-03 10:03:13.681CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Negative sea level oscillation in Bahía Blanca Estuary related to a Global Climatic Change around 2,650 yr B.P
title Negative sea level oscillation in Bahía Blanca Estuary related to a Global Climatic Change around 2,650 yr B.P
spellingShingle Negative sea level oscillation in Bahía Blanca Estuary related to a Global Climatic Change around 2,650 yr B.P
Gomez, Eduardo Alberto
Sedimentology
Micropaleontology
Sea Level Fluctuations
Holocene
title_short Negative sea level oscillation in Bahía Blanca Estuary related to a Global Climatic Change around 2,650 yr B.P
title_full Negative sea level oscillation in Bahía Blanca Estuary related to a Global Climatic Change around 2,650 yr B.P
title_fullStr Negative sea level oscillation in Bahía Blanca Estuary related to a Global Climatic Change around 2,650 yr B.P
title_full_unstemmed Negative sea level oscillation in Bahía Blanca Estuary related to a Global Climatic Change around 2,650 yr B.P
title_sort Negative sea level oscillation in Bahía Blanca Estuary related to a Global Climatic Change around 2,650 yr B.P
dc.creator.none.fl_str_mv Gomez, Eduardo Alberto
Martinez, D. E.
Borel, Claudia Marcela
Guerstein, Gladys Raquel
Cusminsky, Gabriela Catalina
author Gomez, Eduardo Alberto
author_facet Gomez, Eduardo Alberto
Martinez, D. E.
Borel, Claudia Marcela
Guerstein, Gladys Raquel
Cusminsky, Gabriela Catalina
author_role author
author2 Martinez, D. E.
Borel, Claudia Marcela
Guerstein, Gladys Raquel
Cusminsky, Gabriela Catalina
author2_role author
author
author
author
dc.subject.none.fl_str_mv Sedimentology
Micropaleontology
Sea Level Fluctuations
Holocene
topic Sedimentology
Micropaleontology
Sea Level Fluctuations
Holocene
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Bathymetric and side scan sonar surveys, sedimentological analyses and boreholes carried out in the external zone of Bahía Blanca Estuary, determined the regional presence of cohesive fine-stratified layers cropping out at depths of up to 17 m below the present mean sea level. Sedimentological and micropalaeontological studies carried out on the most representative core give evidence of an alternating environmental energy during deposition as it currently occurs in muddy tidal plains. The lower core section consists of sediments which are deposited in a restricted intertidal environment. The middle section represents an intertidal environment which is more strongly influenced by the action of tidal currents as it currently occurs in tidal flats in close relation with a channel system. The upper section shows the gradual passage to present conditions (strong tidal currents). The core lower section (¹⁴ C 6350 yr B.P.) could have been deposited before the maximum Holocene transgression while its middle section (¹⁴ C 2460 yr B.P.) indicates the occurrence of an important negative mean sea-level oscillation that is correlated with evidence emerging from the coasts of southern Argentina and central-southern Brazil. The magnitude of this negative oscillation below the current sea level may be correlated with the worldwide climatic change that occurred around 2650 yr B.P. This suggests that the consequences resulting from relatively short perturbations in the global climate are more important than heretofore believed.
Fil: Gomez, Eduardo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
Fil: Martinez, D. E.. Universidad Nacional del Sur; Argentina
Fil: Borel, Claudia Marcela. Universidad Nacional del Sur; Argentina
Fil: Guerstein, Gladys Raquel. Universidad Nacional del Sur; Argentina
Fil: Cusminsky, Gabriela Catalina. Universidad Nacional del Comahue; Argentina
description Bathymetric and side scan sonar surveys, sedimentological analyses and boreholes carried out in the external zone of Bahía Blanca Estuary, determined the regional presence of cohesive fine-stratified layers cropping out at depths of up to 17 m below the present mean sea level. Sedimentological and micropalaeontological studies carried out on the most representative core give evidence of an alternating environmental energy during deposition as it currently occurs in muddy tidal plains. The lower core section consists of sediments which are deposited in a restricted intertidal environment. The middle section represents an intertidal environment which is more strongly influenced by the action of tidal currents as it currently occurs in tidal flats in close relation with a channel system. The upper section shows the gradual passage to present conditions (strong tidal currents). The core lower section (¹⁴ C 6350 yr B.P.) could have been deposited before the maximum Holocene transgression while its middle section (¹⁴ C 2460 yr B.P.) indicates the occurrence of an important negative mean sea-level oscillation that is correlated with evidence emerging from the coasts of southern Argentina and central-southern Brazil. The magnitude of this negative oscillation below the current sea level may be correlated with the worldwide climatic change that occurred around 2650 yr B.P. This suggests that the consequences resulting from relatively short perturbations in the global climate are more important than heretofore believed.
publishDate 2006
dc.date.none.fl_str_mv 2006-12
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/11336/30593
Gomez, Eduardo Alberto; Martinez, D. E.; Borel, Claudia Marcela; Guerstein, Gladys Raquel; Cusminsky, Gabriela Catalina; Negative sea level oscillation in Bahía Blanca Estuary related to a Global Climatic Change around 2,650 yr B.P; Coastal Education & Research Foundation; Journal Of Coastal Research; 39; 12-2006; 181-185
0749-0208
CONICET Digital
CONICET
url http://hdl.handle.net/11336/30593
identifier_str_mv Gomez, Eduardo Alberto; Martinez, D. E.; Borel, Claudia Marcela; Guerstein, Gladys Raquel; Cusminsky, Gabriela Catalina; Negative sea level oscillation in Bahía Blanca Estuary related to a Global Climatic Change around 2,650 yr B.P; Coastal Education & Research Foundation; Journal Of Coastal Research; 39; 12-2006; 181-185
0749-0208
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.jstor.org/stable/25741558
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
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Coastal Education & Research Foundation
publisher.none.fl_str_mv Coastal Education & Research Foundation
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
_version_ 1842269789041459200
score 13.13397

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