An Early Pliocene relative sea level record from Patagonia (Argentina)

We report ciao a geological unit surveyed and dated in central Patagonia, Argentina (Camarones town, San Jorge Gulf). The unit was interpreted as representative of an intertidal environment and dated to the Early Pliocene (4.69-5.23 Ma) with strontium isotope stratigraphy. The elevation of this unit...

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Detalles Bibliográficos
Autores principales: Rovere, Alessio, Pappalardo, Marta, Richiano, Sebastián Miguel, Aguirre, Marina Laura, Sandstrom, Michael R., Hearty, Paul J., Austermann, Jacqueline, Castellanos, Ignacio, Raymo, Maureen E.
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2020
Materias:
Ciencias Naturales
Early Pliocene
Sea level
Stratigraphy
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/105588
https://eartharxiv.org/ycp6t/
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-105588
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Early Pliocene
Sea level
Stratigraphy
spellingShingle Ciencias Naturales
Early Pliocene
Sea level
Stratigraphy
Rovere, Alessio
Pappalardo, Marta
Richiano, Sebastián Miguel
Aguirre, Marina Laura
Sandstrom, Michael R.
Hearty, Paul J.
Austermann, Jacqueline
Castellanos, Ignacio
Raymo, Maureen E.
An Early Pliocene relative sea level record from Patagonia (Argentina)
topic_facet Ciencias Naturales
Early Pliocene
Sea level
Stratigraphy
description We report ciao a geological unit surveyed and dated in central Patagonia, Argentina (Camarones town, San Jorge Gulf). The unit was interpreted as representative of an intertidal environment and dated to the Early Pliocene (4.69-5.23 Ma) with strontium isotope stratigraphy. The elevation of this unit was measured with differential GPS at ca. 36 m above present-day sea level. Considering modern tidal ranges, it was possible to constrain paleo relative sea level within ±2.5m (1s). We use glacial isostatic adjustment models and estimates of vertical land movement to calculate that, when the Camarones intertidal sequence was deposited, global mean sea level was 28.4 ± 11.7m above present. This estimate matches those derived from analogous Early Pliocene sea level proxies in the Mediterranean Sea and South Africa. Evidence from these three locations indicates that Early Pliocene sea level may have exceeded 20m above its present level. Such high global mean sea level values imply an ice-free Greenland, a significant melting of West Antarctica, and a contribution of East Antarctica to global mean sea level.
format Articulo
Preprint
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 An Early Pliocene relative sea level record from Patagonia (Argentina)
title_short An Early Pliocene relative sea level record from Patagonia (Argentina)
title_full An Early Pliocene relative sea level record from Patagonia (Argentina)
title_fullStr An Early Pliocene relative sea level record from Patagonia (Argentina)
title_full_unstemmed An Early Pliocene relative sea level record from Patagonia (Argentina)
title_sort early pliocene relative sea level record from patagonia (argentina)
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/105588
https://eartharxiv.org/ycp6t/
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