Stable oxygen and carbon isotope composition of holocene mytilidae from the camarones coast (Chubut, argentina): Palaeoceanographic implications

Autores
Boretto, Gabriella Margherita; Zanchetta, Giovanni; Consoloni, Ilaria; Baneschi, Ilaria; Guidi, Massimo; Isola, Ilaria; Bini, Monica; Ragaini, Luca; Terrasi, Filippo; Regattieri, Eleonora; Dallai, Luigi
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The stable isotope composition of living and of Holocene Mytilidae shells was measured in the area of Camarones (Chubut, Argentina). The most striking results were the high δ18 O values measured in samples older than ca. 6.1 cal ka BP. In the younger samples, the δ18 O values remained substantially stable and similar to those of living specimens. Analysis of the data revealed the possibility for this isotopic shift to be driven mainly by changes in temperature probably accompanied by minor changes in salinity, suggesting cooler seawater before 6.1 cal ka BP, with a maximum possible temperature shift of ca. 5◦ C. A possible explanation of this change can be related to a northward position of the confluence zone of the Falkland and Brazilian currents. This is consistent with the data obtained in marine cores, which indicate a northerly position of the confluence in the first half of the Holocene. Our data are also in line with the changes in wind strength and position of the Southern Westerlies Wind, as reconstructed in terrestrial proxies from the Southernmost Patagonia region.
Fil: Boretto, Gabriella Margherita. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Zanchetta, Giovanni. Università degli Studi di Pisa; Italia. Istituto di Geologia Ambientale e Geoingegneria; Italia. Consiglio Nazionale delle Ricerche; Italia
Fil: Consoloni, Ilaria. Università degli Studi di Pisa; Italia
Fil: Baneschi, Ilaria. Istituto di Geoscienze e Georisorse; Italia. Consiglio Nazionale delle Ricerche; Italia
Fil: Guidi, Massimo. Istituto di Geoscienze e Georisorse; Italia. Consiglio Nazionale delle Ricerche; Italia
Fil: Isola, Ilaria. Istituto Nazione di Geofisica e Vulcanologia; Italia
Fil: Bini, Monica. Consiglio Nazionale delle Ricerche; Italia. Università degli Studi di Pisa; Italia
Fil: Ragaini, Luca. Università degli Studi di Pisa; Italia
Fil: Terrasi, Filippo. Seconda Universita Degli Studi Di Napoli; Italia
Fil: Regattieri, Eleonora. Istituto di Geoscienze e Georisorse; Italia
Fil: Dallai, Luigi. Istituto di Geoscienze e Georisorse; Italia. Istituto Nazione di Geofisica e Vulcanologia; Italia. Università degli studi di Roma "La Sapienza"; Italia
Materia
BRAZILIAN CURRENT
FALKLAND (MALVINAS) CURRENT
HOLOCENE
MOLLUSK SHELLS
PATAGONIAN COAST
RAISED BEACHES
STABLE ISOTOPES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/141326
Acceder
id CONICETDig_dd27e2410fa1105c66c5210303c78283
oai_identifier_str oai:ri.conicet.gov.ar:11336/141326
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Stable oxygen and carbon isotope composition of holocene mytilidae from the camarones coast (Chubut, argentina): Palaeoceanographic implicationsBoretto, Gabriella MargheritaZanchetta, GiovanniConsoloni, IlariaBaneschi, IlariaGuidi, MassimoIsola, IlariaBini, MonicaRagaini, LucaTerrasi, FilippoRegattieri, EleonoraDallai, LuigiBRAZILIAN CURRENTFALKLAND (MALVINAS) CURRENTHOLOCENEMOLLUSK SHELLSPATAGONIAN COASTRAISED BEACHESSTABLE ISOTOPEShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The stable isotope composition of living and of Holocene Mytilidae shells was measured in the area of Camarones (Chubut, Argentina). The most striking results were the high δ18 O values measured in samples older than ca. 6.1 cal ka BP. In the younger samples, the δ18 O values remained substantially stable and similar to those of living specimens. Analysis of the data revealed the possibility for this isotopic shift to be driven mainly by changes in temperature probably accompanied by minor changes in salinity, suggesting cooler seawater before 6.1 cal ka BP, with a maximum possible temperature shift of ca. 5◦ C. A possible explanation of this change can be related to a northward position of the confluence zone of the Falkland and Brazilian currents. This is consistent with the data obtained in marine cores, which indicate a northerly position of the confluence in the first half of the Holocene. Our data are also in line with the changes in wind strength and position of the Southern Westerlies Wind, as reconstructed in terrestrial proxies from the Southernmost Patagonia region.Fil: Boretto, Gabriella Margherita. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Zanchetta, Giovanni. Università degli Studi di Pisa; Italia. Istituto di Geologia Ambientale e Geoingegneria; Italia. Consiglio Nazionale delle Ricerche; ItaliaFil: Consoloni, Ilaria. Università degli Studi di Pisa; ItaliaFil: Baneschi, Ilaria. Istituto di Geoscienze e Georisorse; Italia. Consiglio Nazionale delle Ricerche; ItaliaFil: Guidi, Massimo. Istituto di Geoscienze e Georisorse; Italia. Consiglio Nazionale delle Ricerche; ItaliaFil: Isola, Ilaria. Istituto Nazione di Geofisica e Vulcanologia; ItaliaFil: Bini, Monica. Consiglio Nazionale delle Ricerche; Italia. Università degli Studi di Pisa; ItaliaFil: Ragaini, Luca. Università degli Studi di Pisa; ItaliaFil: Terrasi, Filippo. Seconda Universita Degli Studi Di Napoli; ItaliaFil: Regattieri, Eleonora. Istituto di Geoscienze e Georisorse; ItaliaFil: Dallai, Luigi. Istituto di Geoscienze e Georisorse; Italia. Istituto Nazione di Geofisica e Vulcanologia; Italia. Università degli studi di Roma "La Sapienza"; ItaliaMDPI AG2020-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/141326Boretto, Gabriella Margherita; Zanchetta, Giovanni; Consoloni, Ilaria; Baneschi, Ilaria; Guidi, Massimo; et al.; Stable oxygen and carbon isotope composition of holocene mytilidae from the camarones coast (Chubut, argentina): Palaeoceanographic implications; MDPI AG; Water; 12; 12; 12-2020; 1-162073-4441CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3390/w12123464info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2073-4441/12/12/3464info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:59:34Zoai:ri.conicet.gov.ar:11336/141326instacron: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 09:59:34.303CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Stable oxygen and carbon isotope composition of holocene mytilidae from the camarones coast (Chubut, argentina): Palaeoceanographic implications
title Stable oxygen and carbon isotope composition of holocene mytilidae from the camarones coast (Chubut, argentina): Palaeoceanographic implications
spellingShingle Stable oxygen and carbon isotope composition of holocene mytilidae from the camarones coast (Chubut, argentina): Palaeoceanographic implications
Boretto, Gabriella Margherita
BRAZILIAN CURRENT
FALKLAND (MALVINAS) CURRENT
HOLOCENE
MOLLUSK SHELLS
PATAGONIAN COAST
RAISED BEACHES
STABLE ISOTOPES
title_short Stable oxygen and carbon isotope composition of holocene mytilidae from the camarones coast (Chubut, argentina): Palaeoceanographic implications
title_full Stable oxygen and carbon isotope composition of holocene mytilidae from the camarones coast (Chubut, argentina): Palaeoceanographic implications
title_fullStr Stable oxygen and carbon isotope composition of holocene mytilidae from the camarones coast (Chubut, argentina): Palaeoceanographic implications
title_full_unstemmed Stable oxygen and carbon isotope composition of holocene mytilidae from the camarones coast (Chubut, argentina): Palaeoceanographic implications
title_sort Stable oxygen and carbon isotope composition of holocene mytilidae from the camarones coast (Chubut, argentina): Palaeoceanographic implications
dc.creator.none.fl_str_mv Boretto, Gabriella Margherita
Zanchetta, Giovanni
Consoloni, Ilaria
Baneschi, Ilaria
Guidi, Massimo
Isola, Ilaria
Bini, Monica
Ragaini, Luca
Terrasi, Filippo
Regattieri, Eleonora
Dallai, Luigi
author Boretto, Gabriella Margherita
author_facet Boretto, Gabriella Margherita
Zanchetta, Giovanni
Consoloni, Ilaria
Baneschi, Ilaria
Guidi, Massimo
Isola, Ilaria
Bini, Monica
Ragaini, Luca
Terrasi, Filippo
Regattieri, Eleonora
Dallai, Luigi
author_role author
author2 Zanchetta, Giovanni
Consoloni, Ilaria
Baneschi, Ilaria
Guidi, Massimo
Isola, Ilaria
Bini, Monica
Ragaini, Luca
Terrasi, Filippo
Regattieri, Eleonora
Dallai, Luigi
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv BRAZILIAN CURRENT
FALKLAND (MALVINAS) CURRENT
HOLOCENE
MOLLUSK SHELLS
PATAGONIAN COAST
RAISED BEACHES
STABLE ISOTOPES
topic BRAZILIAN CURRENT
FALKLAND (MALVINAS) CURRENT
HOLOCENE
MOLLUSK SHELLS
PATAGONIAN COAST
RAISED BEACHES
STABLE ISOTOPES
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 stable isotope composition of living and of Holocene Mytilidae shells was measured in the area of Camarones (Chubut, Argentina). The most striking results were the high δ18 O values measured in samples older than ca. 6.1 cal ka BP. In the younger samples, the δ18 O values remained substantially stable and similar to those of living specimens. Analysis of the data revealed the possibility for this isotopic shift to be driven mainly by changes in temperature probably accompanied by minor changes in salinity, suggesting cooler seawater before 6.1 cal ka BP, with a maximum possible temperature shift of ca. 5◦ C. A possible explanation of this change can be related to a northward position of the confluence zone of the Falkland and Brazilian currents. This is consistent with the data obtained in marine cores, which indicate a northerly position of the confluence in the first half of the Holocene. Our data are also in line with the changes in wind strength and position of the Southern Westerlies Wind, as reconstructed in terrestrial proxies from the Southernmost Patagonia region.
Fil: Boretto, Gabriella Margherita. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Zanchetta, Giovanni. Università degli Studi di Pisa; Italia. Istituto di Geologia Ambientale e Geoingegneria; Italia. Consiglio Nazionale delle Ricerche; Italia
Fil: Consoloni, Ilaria. Università degli Studi di Pisa; Italia
Fil: Baneschi, Ilaria. Istituto di Geoscienze e Georisorse; Italia. Consiglio Nazionale delle Ricerche; Italia
Fil: Guidi, Massimo. Istituto di Geoscienze e Georisorse; Italia. Consiglio Nazionale delle Ricerche; Italia
Fil: Isola, Ilaria. Istituto Nazione di Geofisica e Vulcanologia; Italia
Fil: Bini, Monica. Consiglio Nazionale delle Ricerche; Italia. Università degli Studi di Pisa; Italia
Fil: Ragaini, Luca. Università degli Studi di Pisa; Italia
Fil: Terrasi, Filippo. Seconda Universita Degli Studi Di Napoli; Italia
Fil: Regattieri, Eleonora. Istituto di Geoscienze e Georisorse; Italia
Fil: Dallai, Luigi. Istituto di Geoscienze e Georisorse; Italia. Istituto Nazione di Geofisica e Vulcanologia; Italia. Università degli studi di Roma "La Sapienza"; Italia
description The stable isotope composition of living and of Holocene Mytilidae shells was measured in the area of Camarones (Chubut, Argentina). The most striking results were the high δ18 O values measured in samples older than ca. 6.1 cal ka BP. In the younger samples, the δ18 O values remained substantially stable and similar to those of living specimens. Analysis of the data revealed the possibility for this isotopic shift to be driven mainly by changes in temperature probably accompanied by minor changes in salinity, suggesting cooler seawater before 6.1 cal ka BP, with a maximum possible temperature shift of ca. 5◦ C. A possible explanation of this change can be related to a northward position of the confluence zone of the Falkland and Brazilian currents. This is consistent with the data obtained in marine cores, which indicate a northerly position of the confluence in the first half of the Holocene. Our data are also in line with the changes in wind strength and position of the Southern Westerlies Wind, as reconstructed in terrestrial proxies from the Southernmost Patagonia region.
publishDate 2020
dc.date.none.fl_str_mv 2020-12
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/11336/141326
Boretto, Gabriella Margherita; Zanchetta, Giovanni; Consoloni, Ilaria; Baneschi, Ilaria; Guidi, Massimo; et al.; Stable oxygen and carbon isotope composition of holocene mytilidae from the camarones coast (Chubut, argentina): Palaeoceanographic implications; MDPI AG; Water; 12; 12; 12-2020; 1-16
2073-4441
CONICET Digital
CONICET
url http://hdl.handle.net/11336/141326
identifier_str_mv Boretto, Gabriella Margherita; Zanchetta, Giovanni; Consoloni, Ilaria; Baneschi, Ilaria; Guidi, Massimo; et al.; Stable oxygen and carbon isotope composition of holocene mytilidae from the camarones coast (Chubut, argentina): Palaeoceanographic implications; MDPI AG; Water; 12; 12; 12-2020; 1-16
2073-4441
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3390/w12123464
info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2073-4441/12/12/3464
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI AG
publisher.none.fl_str_mv MDPI AG
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_ 1842269587479986176
score 13.13397

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