Paleoenvironmental changes during the Late Pleistocene in Buenos Aires province (Argentina), using foraminifera fauna as proxy data

This paper describes the lithological and micropaleontological characteristics of a new record corresponding to the last interglacial for Buenos Aires province. Foraminifera were analyzed from an artificial outcrop 4 m thick (36◦34′0.97″ S and 57◦22′54.43″ W), from the quarry situated in the town of...

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Autores principales: Petriella, Julieta, Bernasconi, Emiliana, Fucks, Enrique Eduardo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2023
Materias:
Ciencias Naturales
Late Pleistocene
Benthic foraminifera
Puente de Pascua
Formation General Conesa site
South America
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/168996
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-168996
record_format dspace
spelling I19-R120-10915-1689962024-08-23T20:04:54Z http://sedici.unlp.edu.ar/handle/10915/168996 Paleoenvironmental changes during the Late Pleistocene in Buenos Aires province (Argentina), using foraminifera fauna as proxy data Petriella, Julieta Bernasconi, Emiliana Fucks, Enrique Eduardo 2023-12-22 2024-08-23T14:42:01Z en Ciencias Naturales Late Pleistocene Benthic foraminifera Puente de Pascua Formation General Conesa site South America This paper describes the lithological and micropaleontological characteristics of a new record corresponding to the last interglacial for Buenos Aires province. Foraminifera were analyzed from an artificial outcrop 4 m thick (36◦34′0.97″ S and 57◦22′54.43″ W), from the quarry situated in the town of General Conesa, Buenos Aires province at an approximate elevation of 4 m a.s.l. Benthic foraminifera fauna was constituted by a predominance of calcareous forms represented mostly by the species Buccella peruviana and Ammonia parkinsoniana. The micropaleontological and lithological characteristics of all the sedimentary units involved in this locality suggest deposits associated with a transition from a low-energy shallow intertidal or subtidal zone to a higher-energy beach or supratidal environment. Although, the topographic height does not enable conclusive assignment of the age of this coastal deposit (>79.500 kyr), the environmental conditions could be correlated with the penultimate transgressive event that occurred at the beginning of the Late Pleistocene (MIS 5), which would have occurred in a shallow environment with changes in the marine influence. These findings provide new information that contributes to better understanding of the paleoenvironmental evolution of this region where two marine transgressions and two wind deposits have been recognized. Centro de Estudios Integrales de la Dinámica Exógena Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Late Pleistocene
Benthic foraminifera
Puente de Pascua
Formation General Conesa site
South America
spellingShingle Ciencias Naturales
Late Pleistocene
Benthic foraminifera
Puente de Pascua
Formation General Conesa site
South America
Petriella, Julieta
Bernasconi, Emiliana
Fucks, Enrique Eduardo
Paleoenvironmental changes during the Late Pleistocene in Buenos Aires province (Argentina), using foraminifera fauna as proxy data
topic_facet Ciencias Naturales
Late Pleistocene
Benthic foraminifera
Puente de Pascua
Formation General Conesa site
South America
description This paper describes the lithological and micropaleontological characteristics of a new record corresponding to the last interglacial for Buenos Aires province. Foraminifera were analyzed from an artificial outcrop 4 m thick (36◦34′0.97″ S and 57◦22′54.43″ W), from the quarry situated in the town of General Conesa, Buenos Aires province at an approximate elevation of 4 m a.s.l. Benthic foraminifera fauna was constituted by a predominance of calcareous forms represented mostly by the species Buccella peruviana and Ammonia parkinsoniana. The micropaleontological and lithological characteristics of all the sedimentary units involved in this locality suggest deposits associated with a transition from a low-energy shallow intertidal or subtidal zone to a higher-energy beach or supratidal environment. Although, the topographic height does not enable conclusive assignment of the age of this coastal deposit (>79.500 kyr), the environmental conditions could be correlated with the penultimate transgressive event that occurred at the beginning of the Late Pleistocene (MIS 5), which would have occurred in a shallow environment with changes in the marine influence. These findings provide new information that contributes to better understanding of the paleoenvironmental evolution of this region where two marine transgressions and two wind deposits have been recognized.
format Articulo
Articulo
author Petriella, Julieta
Bernasconi, Emiliana
Fucks, Enrique Eduardo
author_facet Petriella, Julieta
Bernasconi, Emiliana
Fucks, Enrique Eduardo
author_sort Petriella, Julieta
title Paleoenvironmental changes during the Late Pleistocene in Buenos Aires province (Argentina), using foraminifera fauna as proxy data
title_short Paleoenvironmental changes during the Late Pleistocene in Buenos Aires province (Argentina), using foraminifera fauna as proxy data
title_full Paleoenvironmental changes during the Late Pleistocene in Buenos Aires province (Argentina), using foraminifera fauna as proxy data
title_fullStr Paleoenvironmental changes during the Late Pleistocene in Buenos Aires province (Argentina), using foraminifera fauna as proxy data
title_full_unstemmed Paleoenvironmental changes during the Late Pleistocene in Buenos Aires province (Argentina), using foraminifera fauna as proxy data
title_sort paleoenvironmental changes during the late pleistocene in buenos aires province (argentina), using foraminifera fauna as proxy data
publishDate 2023
url http://sedici.unlp.edu.ar/handle/10915/168996
work_keys_str_mv AT petriellajulieta paleoenvironmentalchangesduringthelatepleistoceneinbuenosairesprovinceargentinausingforaminiferafaunaasproxydata
AT bernasconiemiliana paleoenvironmentalchangesduringthelatepleistoceneinbuenosairesprovinceargentinausingforaminiferafaunaasproxydata
AT fucksenriqueeduardo paleoenvironmentalchangesduringthelatepleistoceneinbuenosairesprovinceargentinausingforaminiferafaunaasproxydata
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