Ichnology of the marine Puente de Pascua Formation, Late Pleistocene, Buenos Aires, Argentina

Autores
Laprida, Cecilia; Gingras, M; Pereyra, Cristian Ramon; Fucks, Enrique Eduardo
Año de publicación
2019
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Ichnological assemblages from the Late Pleistocene of Buenos Aires, Argentina, have been largelyneglected in paleontological literature. Here we describe, interpret, and discuss the ichnologicalassemblages of the Late Pleistocene Puente de Pascua Formation at its type locality(35o55 ́37 ́ ́S?57o43 ́7,6 ́ ́W). Based on sedimentology and trace fossils, four units wererecognized. The lowermost unit A comprises sandy clay with lenticular stratification withPaleophycus isp. (Hall, 1847) (produced by marine polychaetes) and Ophiomorpha isp. (Lundgren,1891) and Thalassinoides isp. (Ehrenberg, 1944) (ascribed to mud-shrimps). Unit B is composedof light brown fine friable sand extensively bioturbated by Tagelus plebeius (Lightfoot, 1786)preserved in life position, apparently contemporaneous with Psilonichnus isp. (Fürsich, 1981)(associated with crabs). Unit C, composed of friable fine sand, does not contain any burrow, butabundant chaotically arranged mollusks. The uppermost Unit D is composed of friable silt andcontains crotovines produced typically by the rodent Ctenomys (Blainville, 1826), represented by a6 cm-diameter branchy gallery and an isolated infilled burrow possibly created, based on itsdiameter, by Lagostomus (Brookes, 1828). Based on the ecology of the producers, thisichnoassemblage succession reflects the paleoenvironmental evolution of the Buenos Airescoastal plain during the Late Pleistocene regressive hemicycle (from the base to the top) fromsubtidal (Unit A) and intertidal settings (Unit B), to typical upper shoreface facies. The presence oftrace fossils assigned to continental vertebrate taxa in Unit D reflects the pedogenetic processeswhich altered the carbonatic deposits of the Pascua Formation after the rapid sea-level fall.
Fil: Laprida, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Gingras, M. Earth Science and Atmospheric Sciences.Edmonton; Canadá
Fil: Pereyra, Cristian Ramon. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Fucks, Enrique Eduardo. Universidad Nacional de La Plata; Argentina
Reunión de Comunicaciones de la Asociación Paleontológica Argentina
La Plata
Argentina
Asociación Paleontológica Argentina
Materia
icnología
Plesitoceno Superior
Formación Pascua
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/180677
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/180677
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Ichnology of the marine Puente de Pascua Formation, Late Pleistocene, Buenos Aires, ArgentinaLaprida, CeciliaGingras, MPereyra, Cristian RamonFucks, Enrique EduardoicnologíaPlesitoceno SuperiorFormación Pascuahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Ichnological assemblages from the Late Pleistocene of Buenos Aires, Argentina, have been largelyneglected in paleontological literature. Here we describe, interpret, and discuss the ichnologicalassemblages of the Late Pleistocene Puente de Pascua Formation at its type locality(35o55 ́37 ́ ́S?57o43 ́7,6 ́ ́W). Based on sedimentology and trace fossils, four units wererecognized. The lowermost unit A comprises sandy clay with lenticular stratification withPaleophycus isp. (Hall, 1847) (produced by marine polychaetes) and Ophiomorpha isp. (Lundgren,1891) and Thalassinoides isp. (Ehrenberg, 1944) (ascribed to mud-shrimps). Unit B is composedof light brown fine friable sand extensively bioturbated by Tagelus plebeius (Lightfoot, 1786)preserved in life position, apparently contemporaneous with Psilonichnus isp. (Fürsich, 1981)(associated with crabs). Unit C, composed of friable fine sand, does not contain any burrow, butabundant chaotically arranged mollusks. The uppermost Unit D is composed of friable silt andcontains crotovines produced typically by the rodent Ctenomys (Blainville, 1826), represented by a6 cm-diameter branchy gallery and an isolated infilled burrow possibly created, based on itsdiameter, by Lagostomus (Brookes, 1828). Based on the ecology of the producers, thisichnoassemblage succession reflects the paleoenvironmental evolution of the Buenos Airescoastal plain during the Late Pleistocene regressive hemicycle (from the base to the top) fromsubtidal (Unit A) and intertidal settings (Unit B), to typical upper shoreface facies. The presence oftrace fossils assigned to continental vertebrate taxa in Unit D reflects the pedogenetic processeswhich altered the carbonatic deposits of the Pascua Formation after the rapid sea-level fall.Fil: Laprida, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Gingras, M. Earth Science and Atmospheric Sciences.Edmonton; CanadáFil: Pereyra, Cristian Ramon. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Fucks, Enrique Eduardo. Universidad Nacional de La Plata; ArgentinaReunión de Comunicaciones de la Asociación Paleontológica ArgentinaLa PlataArgentinaAsociación Paleontológica ArgentinaAsociación Paleontológica Argentina2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectReuniónBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/180677Ichnology of the marine Puente de Pascua Formation, Late Pleistocene, Buenos Aires, Argentina; Reunión de Comunicaciones de la Asociación Paleontológica Argentina; La Plata; Argentina; 2019; 1-1CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.apaleontologica.org.ar/wp-content/uploads/2022/02/2019_La-Plata.pdfNacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:25:26Zoai:ri.conicet.gov.ar:11336/180677instacron: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:34982025-10-15 15:25:26.81CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ichnology of the marine Puente de Pascua Formation, Late Pleistocene, Buenos Aires, Argentina
title Ichnology of the marine Puente de Pascua Formation, Late Pleistocene, Buenos Aires, Argentina
spellingShingle Ichnology of the marine Puente de Pascua Formation, Late Pleistocene, Buenos Aires, Argentina
Laprida, Cecilia
icnología
Plesitoceno Superior
Formación Pascua
title_short Ichnology of the marine Puente de Pascua Formation, Late Pleistocene, Buenos Aires, Argentina
title_full Ichnology of the marine Puente de Pascua Formation, Late Pleistocene, Buenos Aires, Argentina
title_fullStr Ichnology of the marine Puente de Pascua Formation, Late Pleistocene, Buenos Aires, Argentina
title_full_unstemmed Ichnology of the marine Puente de Pascua Formation, Late Pleistocene, Buenos Aires, Argentina
title_sort Ichnology of the marine Puente de Pascua Formation, Late Pleistocene, Buenos Aires, Argentina
dc.creator.none.fl_str_mv Laprida, Cecilia
Gingras, M
Pereyra, Cristian Ramon
Fucks, Enrique Eduardo
author Laprida, Cecilia
author_facet Laprida, Cecilia
Gingras, M
Pereyra, Cristian Ramon
Fucks, Enrique Eduardo
author_role author
author2 Gingras, M
Pereyra, Cristian Ramon
Fucks, Enrique Eduardo
author2_role author
author
author
dc.subject.none.fl_str_mv icnología
Plesitoceno Superior
Formación Pascua
topic icnología
Plesitoceno Superior
Formación Pascua
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Ichnological assemblages from the Late Pleistocene of Buenos Aires, Argentina, have been largelyneglected in paleontological literature. Here we describe, interpret, and discuss the ichnologicalassemblages of the Late Pleistocene Puente de Pascua Formation at its type locality(35o55 ́37 ́ ́S?57o43 ́7,6 ́ ́W). Based on sedimentology and trace fossils, four units wererecognized. The lowermost unit A comprises sandy clay with lenticular stratification withPaleophycus isp. (Hall, 1847) (produced by marine polychaetes) and Ophiomorpha isp. (Lundgren,1891) and Thalassinoides isp. (Ehrenberg, 1944) (ascribed to mud-shrimps). Unit B is composedof light brown fine friable sand extensively bioturbated by Tagelus plebeius (Lightfoot, 1786)preserved in life position, apparently contemporaneous with Psilonichnus isp. (Fürsich, 1981)(associated with crabs). Unit C, composed of friable fine sand, does not contain any burrow, butabundant chaotically arranged mollusks. The uppermost Unit D is composed of friable silt andcontains crotovines produced typically by the rodent Ctenomys (Blainville, 1826), represented by a6 cm-diameter branchy gallery and an isolated infilled burrow possibly created, based on itsdiameter, by Lagostomus (Brookes, 1828). Based on the ecology of the producers, thisichnoassemblage succession reflects the paleoenvironmental evolution of the Buenos Airescoastal plain during the Late Pleistocene regressive hemicycle (from the base to the top) fromsubtidal (Unit A) and intertidal settings (Unit B), to typical upper shoreface facies. The presence oftrace fossils assigned to continental vertebrate taxa in Unit D reflects the pedogenetic processeswhich altered the carbonatic deposits of the Pascua Formation after the rapid sea-level fall.
Fil: Laprida, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Gingras, M. Earth Science and Atmospheric Sciences.Edmonton; Canadá
Fil: Pereyra, Cristian Ramon. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Fucks, Enrique Eduardo. Universidad Nacional de La Plata; Argentina
Reunión de Comunicaciones de la Asociación Paleontológica Argentina
La Plata
Argentina
Asociación Paleontológica Argentina
description Ichnological assemblages from the Late Pleistocene of Buenos Aires, Argentina, have been largelyneglected in paleontological literature. Here we describe, interpret, and discuss the ichnologicalassemblages of the Late Pleistocene Puente de Pascua Formation at its type locality(35o55 ́37 ́ ́S?57o43 ́7,6 ́ ́W). Based on sedimentology and trace fossils, four units wererecognized. The lowermost unit A comprises sandy clay with lenticular stratification withPaleophycus isp. (Hall, 1847) (produced by marine polychaetes) and Ophiomorpha isp. (Lundgren,1891) and Thalassinoides isp. (Ehrenberg, 1944) (ascribed to mud-shrimps). Unit B is composedof light brown fine friable sand extensively bioturbated by Tagelus plebeius (Lightfoot, 1786)preserved in life position, apparently contemporaneous with Psilonichnus isp. (Fürsich, 1981)(associated with crabs). Unit C, composed of friable fine sand, does not contain any burrow, butabundant chaotically arranged mollusks. The uppermost Unit D is composed of friable silt andcontains crotovines produced typically by the rodent Ctenomys (Blainville, 1826), represented by a6 cm-diameter branchy gallery and an isolated infilled burrow possibly created, based on itsdiameter, by Lagostomus (Brookes, 1828). Based on the ecology of the producers, thisichnoassemblage succession reflects the paleoenvironmental evolution of the Buenos Airescoastal plain during the Late Pleistocene regressive hemicycle (from the base to the top) fromsubtidal (Unit A) and intertidal settings (Unit B), to typical upper shoreface facies. The presence oftrace fossils assigned to continental vertebrate taxa in Unit D reflects the pedogenetic processeswhich altered the carbonatic deposits of the Pascua Formation after the rapid sea-level fall.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Reunión
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/180677
Ichnology of the marine Puente de Pascua Formation, Late Pleistocene, Buenos Aires, Argentina; Reunión de Comunicaciones de la Asociación Paleontológica Argentina; La Plata; Argentina; 2019; 1-1
CONICET Digital
CONICET
url http://hdl.handle.net/11336/180677
identifier_str_mv Ichnology of the marine Puente de Pascua Formation, Late Pleistocene, Buenos Aires, Argentina; Reunión de Comunicaciones de la Asociación Paleontológica Argentina; La Plata; Argentina; 2019; 1-1
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.apaleontologica.org.ar/wp-content/uploads/2022/02/2019_La-Plata.pdf
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.coverage.none.fl_str_mv Nacional
dc.publisher.none.fl_str_mv Asociación Paleontológica Argentina
publisher.none.fl_str_mv Asociación Paleontológica Argentina
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
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