Higher than present global mean sea level recorded by an Early Pliocene intertidal unit in Patagonia (Argentina)
Reconstructions of global mean sea level from earlier warm periods in Earth?s history can helpconstrain future projections of sea level rise. Here we report on the sedimentology and age ofa geological unit in central Patagonia, Argentina, that we dated to the Early Pliocene(4.69?5.23 Ma, 2σ) with st...
Published in: | Communications Earth & Environment |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Science Press and Springer-Verlag GmbH
|
Subjects: | |
Online Access: | http://hdl.handle.net/11336/128364 |
id |
ftconicet:oai:ri.conicet.gov.ar:11336/128364 |
---|---|
record_format |
openpolar |
spelling |
ftconicet:oai:ri.conicet.gov.ar:11336/128364 2023-10-09T21:46:04+02:00 Higher than present global mean sea level recorded by an Early Pliocene intertidal unit in Patagonia (Argentina) Rovere, Alessio Pappalardo, Marta Richiano, Sebastián Miguel Aguirre, Marina Laura Sandstrom, Michael R. Hearty, Paul J. Austermann, Jacqueline Castellanos, Ignacio Raymo, Maureen E. application/pdf http://hdl.handle.net/11336/128364 eng eng Science Press and Springer-Verlag GmbH info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/s43247-020-00067-6 info:eu-repo/semantics/altIdentifier/doi/10.1038/s43247-020-00067-6 http://hdl.handle.net/11336/128364 Rovere, Alessio; Pappalardo, Marta; Richiano, Sebastián Miguel; Aguirre, Marina Laura; Sandstrom, Michael R.; et al.; Higher than present global mean sea level recorded by an Early Pliocene intertidal unit in Patagonia (Argentina); Science Press and Springer-Verlag GmbH; Communications Earth & Environment; 1; 1; 12-2020 2662-4435 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ SEA-LEVEL INDICATORS PLIOCENE PATAGONIA CLIMATE-CHANGE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1038/s43247-020-00067-6 2023-09-24T20:16:05Z Reconstructions of global mean sea level from earlier warm periods in Earth?s history can helpconstrain future projections of sea level rise. Here we report on the sedimentology and age ofa geological unit in central Patagonia, Argentina, that we dated to the Early Pliocene(4.69?5.23 Ma, 2σ) with strontium isotope stratigraphy. The unit was interpreted as representativeof an intertidal environment, and its elevation was measured with differential GPS atca. 36m above present-day sea level. Considering modern tidal ranges, it was possible toconstrain paleo relative sea level within ±2.7m (1σ). We use glacial isostatic adjustmentmodels and estimates of vertical land movement to calculate that, when the Camaronesintertidal sequence was deposited, global mean sea level was 28.4 ± 11.7m (1σ) above present.This estimate matches those derived from analogous Early Pliocene sea level proxies inthe Mediterranean Sea and South Africa. Evidence from these three locations indicates thatEarly Pliocene sea level may have exceeded 20m above its present level. Such high globalmean sea level values imply an ice-free Greenland, a significant melting of West Antarctica,and a contribution of marine-based sectors of East Antarctica to global mean sea level. Fil: Rovere, Alessio. Universitat Bremen; Alemania Fil: Pappalardo, Marta. Universidad de Pisa; Italia Fil: Richiano, Sebastián Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina Fil: Aguirre, Marina Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina Fil: Sandstrom, Michael R. Columbia University; Estados Unidos Fil: Hearty, Paul J. University of Texas at Austin; Estados Unidos Fil: Austermann, Jacqueline. Columbia University; Estados Unidos Fil: Castellanos, ... Article in Journal/Newspaper Antarc* Antarctica East Antarctica Greenland West Antarctica CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) East Antarctica Austin Patagonia West Antarctica Greenland Argentina Aguirre ENVELOPE(-57.933,-57.933,-63.317,-63.317) Communications Earth & Environment 1 1 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
SEA-LEVEL INDICATORS PLIOCENE PATAGONIA CLIMATE-CHANGE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
SEA-LEVEL INDICATORS PLIOCENE PATAGONIA CLIMATE-CHANGE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Rovere, Alessio Pappalardo, Marta Richiano, Sebastián Miguel Aguirre, Marina Laura Sandstrom, Michael R. Hearty, Paul J. Austermann, Jacqueline Castellanos, Ignacio Raymo, Maureen E. Higher than present global mean sea level recorded by an Early Pliocene intertidal unit in Patagonia (Argentina) |
topic_facet |
SEA-LEVEL INDICATORS PLIOCENE PATAGONIA CLIMATE-CHANGE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
Reconstructions of global mean sea level from earlier warm periods in Earth?s history can helpconstrain future projections of sea level rise. Here we report on the sedimentology and age ofa geological unit in central Patagonia, Argentina, that we dated to the Early Pliocene(4.69?5.23 Ma, 2σ) with strontium isotope stratigraphy. The unit was interpreted as representativeof an intertidal environment, and its elevation was measured with differential GPS atca. 36m above present-day sea level. Considering modern tidal ranges, it was possible toconstrain paleo relative sea level within ±2.7m (1σ). We use glacial isostatic adjustmentmodels and estimates of vertical land movement to calculate that, when the Camaronesintertidal sequence was deposited, global mean sea level was 28.4 ± 11.7m (1σ) above present.This estimate matches those derived from analogous Early Pliocene sea level proxies inthe Mediterranean Sea and South Africa. Evidence from these three locations indicates thatEarly Pliocene sea level may have exceeded 20m above its present level. Such high globalmean sea level values imply an ice-free Greenland, a significant melting of West Antarctica,and a contribution of marine-based sectors of East Antarctica to global mean sea level. Fil: Rovere, Alessio. Universitat Bremen; Alemania Fil: Pappalardo, Marta. Universidad de Pisa; Italia Fil: Richiano, Sebastián Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina Fil: Aguirre, Marina Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina Fil: Sandstrom, Michael R. Columbia University; Estados Unidos Fil: Hearty, Paul J. University of Texas at Austin; Estados Unidos Fil: Austermann, Jacqueline. Columbia University; Estados Unidos Fil: Castellanos, ... |
format |
Article in Journal/Newspaper |
author |
Rovere, Alessio Pappalardo, Marta Richiano, Sebastián Miguel Aguirre, Marina Laura Sandstrom, Michael R. Hearty, Paul J. Austermann, Jacqueline Castellanos, Ignacio Raymo, Maureen E. |
author_facet |
Rovere, Alessio Pappalardo, Marta Richiano, Sebastián Miguel Aguirre, Marina Laura Sandstrom, Michael R. Hearty, Paul J. Austermann, Jacqueline Castellanos, Ignacio Raymo, Maureen E. |
author_sort |
Rovere, Alessio |
title |
Higher than present global mean sea level recorded by an Early Pliocene intertidal unit in Patagonia (Argentina) |
title_short |
Higher than present global mean sea level recorded by an Early Pliocene intertidal unit in Patagonia (Argentina) |
title_full |
Higher than present global mean sea level recorded by an Early Pliocene intertidal unit in Patagonia (Argentina) |
title_fullStr |
Higher than present global mean sea level recorded by an Early Pliocene intertidal unit in Patagonia (Argentina) |
title_full_unstemmed |
Higher than present global mean sea level recorded by an Early Pliocene intertidal unit in Patagonia (Argentina) |
title_sort |
higher than present global mean sea level recorded by an early pliocene intertidal unit in patagonia (argentina) |
publisher |
Science Press and Springer-Verlag GmbH |
url |
http://hdl.handle.net/11336/128364 |
long_lat |
ENVELOPE(-57.933,-57.933,-63.317,-63.317) |
geographic |
East Antarctica Austin Patagonia West Antarctica Greenland Argentina Aguirre |
geographic_facet |
East Antarctica Austin Patagonia West Antarctica Greenland Argentina Aguirre |
genre |
Antarc* Antarctica East Antarctica Greenland West Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica Greenland West Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/s43247-020-00067-6 info:eu-repo/semantics/altIdentifier/doi/10.1038/s43247-020-00067-6 http://hdl.handle.net/11336/128364 Rovere, Alessio; Pappalardo, Marta; Richiano, Sebastián Miguel; Aguirre, Marina Laura; Sandstrom, Michael R.; et al.; Higher than present global mean sea level recorded by an Early Pliocene intertidal unit in Patagonia (Argentina); Science Press and Springer-Verlag GmbH; Communications Earth & Environment; 1; 1; 12-2020 2662-4435 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
op_doi |
https://doi.org/10.1038/s43247-020-00067-6 |
container_title |
Communications Earth & Environment |
container_volume |
1 |
container_issue |
1 |
_version_ |
1779321733282529280 |