Late Quaternary climatic variability in northern Patagonia, Argentina, based on δ18O of modern and fossil shells of Amiantis purpurata (Bivalvia, Veneridae)

Amiantis purpurata is a common warm-temperate water bivalve species distributed from southern Brazil to northern Patagonia, Argentina, which has a rich and well preserved fossil record in the San Matías Gulf (SMG) dating back to the late Quaternary. This study aims to establish A. purpurata shells a...

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Autores principales:	Bayer, María Sol, Beierlein, Lars, Morán, Ariana Gisela, Doldan, María del Socorro, Morsan, Enrique Mario, Brey, Thomas, Mackensen, Andreas, Farías, Laura, García, Gerardo, Gordillo, Sandra
Formato:	Artículo publishedVersion
Lenguaje:	Inglés
Publicado:	Elsevier Science 2020
Materias:	HOLOCENE OXYGEN ISOTOPES PALAEOARCHIVES PALAEOTEMPERATURES PLEISTOCENE SEASONALITY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1
Acceso en línea:	http://hdl.handle.net/11336/141995 http://suquia.ffyh.unc.edu.ar/handle/11336/141995
Aporte de:	Suquía - Instituto de Antropología de Córdoba (IDACOR, CONICET y UNC) de Universidad Nacional de Córdoba

id	I10-R181-11336-141995
record_format	dspace
institution	Universidad Nacional de Córdoba
institution_str	I-10
repository_str	R-181
collection	Suquía - Instituto de Antropología de Córdoba (IDACOR, CONICET y UNC)
language	Inglés
topic	HOLOCENE OXYGEN ISOTOPES PALAEOARCHIVES PALAEOTEMPERATURES PLEISTOCENE SEASONALITY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1
spellingShingle	HOLOCENE OXYGEN ISOTOPES PALAEOARCHIVES PALAEOTEMPERATURES PLEISTOCENE SEASONALITY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Bayer, María Sol Beierlein, Lars Morán, Ariana Gisela Doldan, María del Socorro Morsan, Enrique Mario Brey, Thomas Mackensen, Andreas Farías, Laura García, Gerardo Gordillo, Sandra Late Quaternary climatic variability in northern Patagonia, Argentina, based on δ18O of modern and fossil shells of Amiantis purpurata (Bivalvia, Veneridae)
topic_facet	HOLOCENE OXYGEN ISOTOPES PALAEOARCHIVES PALAEOTEMPERATURES PLEISTOCENE SEASONALITY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1
description	Amiantis purpurata is a common warm-temperate water bivalve species distributed from southern Brazil to northern Patagonia, Argentina, which has a rich and well preserved fossil record in the San Matías Gulf (SMG) dating back to the late Quaternary. This study aims to establish A. purpurata shells as a new palaeoarchive of past marine conditions in South America. We compared the stable oxygen and carbon profiles (δ18Oshell; δ13Cshell) of eleven specimens of A. purpurata from different geological times (modern, Late Holocene and interglacial Late Pleistocene), and additionally present in situ oxygen isotope values of seawater within SMG (δ18Owater). Using both sets of information, we calculated and reconstructed palaeowater temperatures for the Late Holocene and compared them to modern water temperatures. Our findings indicate that A. purpurata records past environmental parameters such as water temperatures on a seasonal scale and can therefore be considered a suitable candidate for future palaeoenvironmental reconstructions in Northern Patagonia. This study is the first step towards further stable isotope analyses on fossil A. purpurata shells, which will show whether and if so, to what extent, important global climate events such as the Neoglacial (Early Holocene), the Hypsithermal (Middle Holocene) and the Little Ice Age (Late Holocene) occurred in South America.
format	Artículo Artículo publishedVersion
author	Bayer, María Sol Beierlein, Lars Morán, Ariana Gisela Doldan, María del Socorro Morsan, Enrique Mario Brey, Thomas Mackensen, Andreas Farías, Laura García, Gerardo Gordillo, Sandra
author_facet	Bayer, María Sol Beierlein, Lars Morán, Ariana Gisela Doldan, María del Socorro Morsan, Enrique Mario Brey, Thomas Mackensen, Andreas Farías, Laura García, Gerardo Gordillo, Sandra
author_sort	Bayer, María Sol
title	Late Quaternary climatic variability in northern Patagonia, Argentina, based on δ18O of modern and fossil shells of Amiantis purpurata (Bivalvia, Veneridae)
title_short	Late Quaternary climatic variability in northern Patagonia, Argentina, based on δ18O of modern and fossil shells of Amiantis purpurata (Bivalvia, Veneridae)
title_full	Late Quaternary climatic variability in northern Patagonia, Argentina, based on δ18O of modern and fossil shells of Amiantis purpurata (Bivalvia, Veneridae)
title_fullStr	Late Quaternary climatic variability in northern Patagonia, Argentina, based on δ18O of modern and fossil shells of Amiantis purpurata (Bivalvia, Veneridae)
title_full_unstemmed	Late Quaternary climatic variability in northern Patagonia, Argentina, based on δ18O of modern and fossil shells of Amiantis purpurata (Bivalvia, Veneridae)
title_sort	late quaternary climatic variability in northern patagonia, argentina, based on δ18o of modern and fossil shells of amiantis purpurata (bivalvia, veneridae)
publisher	Elsevier Science
publishDate	2020
url	http://hdl.handle.net/11336/141995 http://suquia.ffyh.unc.edu.ar/handle/11336/141995
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Late Quaternary climatic variability in northern Patagonia, Argentina, based on δ18O of modern and fossil shells of Amiantis purpurata (Bivalvia, Veneridae)

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