Exceptionally preserved Early Cretaceous stalked crinoids from the Agrio Formation, Neuquén basin, west-central Argentina

Autores
Lazo, Dario Gustavo; Bressan, Graciela Susana; Schwarz, Ernesto; Veiga, Gonzalo Diego
Año de publicación
2012
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Crinoid beds were studied from the Valanginian beds of the Agrio Formation, in the Cerro Mesa area, located 20 km northeast of the city of Zapala (Neuquén Basin, Argentina). Deposits represent a mixed clastic-carbonate succession broadly interpreted as storm-influenced shoreface to offshore settings. Crinoid paleocommunities developed in association with large migratory subaqueous dunes (sand waves) and were preserved in a number of stacked crinoid beds including a key surface with 20 specimens highly articulated. This is the first record of complete stalked crinoids from the Early Cretaceous of South America. Two distinct modes of occurrence have been recognized through a detailed taphonomic analysis. Well-preserved articulated specimens associated with rapid burial probably by avalanching processes and disarticulated specimens with more extensive periods of exposure before final burial. The specimens are provisionally assigned to the genus Isocrinus (Family Isocrinidae). However, some diagnostic characters remain unknown.
Fil: Lazo, Dario Gustavo. 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: Bressan, Graciela Susana. 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: Schwarz, Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Veiga, Gonzalo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
XIII Congreso Geológico Chileno
Antofagasta
Chile
Sociedad Geológica de Chile
Materia
CRINOIDEA
AGRIO FM
SAND WAVES
NEUQUÉN BASIN
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:11336/233864
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/233864
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Exceptionally preserved Early Cretaceous stalked crinoids from the Agrio Formation, Neuquén basin, west-central ArgentinaLazo, Dario GustavoBressan, Graciela SusanaSchwarz, ErnestoVeiga, Gonzalo DiegoCRINOIDEAAGRIO FMSAND WAVESNEUQUÉN BASINhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Crinoid beds were studied from the Valanginian beds of the Agrio Formation, in the Cerro Mesa area, located 20 km northeast of the city of Zapala (Neuquén Basin, Argentina). Deposits represent a mixed clastic-carbonate succession broadly interpreted as storm-influenced shoreface to offshore settings. Crinoid paleocommunities developed in association with large migratory subaqueous dunes (sand waves) and were preserved in a number of stacked crinoid beds including a key surface with 20 specimens highly articulated. This is the first record of complete stalked crinoids from the Early Cretaceous of South America. Two distinct modes of occurrence have been recognized through a detailed taphonomic analysis. Well-preserved articulated specimens associated with rapid burial probably by avalanching processes and disarticulated specimens with more extensive periods of exposure before final burial. The specimens are provisionally assigned to the genus Isocrinus (Family Isocrinidae). However, some diagnostic characters remain unknown.Fil: Lazo, Dario Gustavo. 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: Bressan, Graciela Susana. 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: Schwarz, Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Veiga, Gonzalo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaXIII Congreso Geológico ChilenoAntofagastaChileSociedad Geológica de ChileSociedad Geológica de Chile2012info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/233864Exceptionally preserved Early Cretaceous stalked crinoids from the Agrio Formation, Neuquén basin, west-central Argentina; XIII Congreso Geológico Chileno; Antofagasta; Chile; 2012; 764-766CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://repositorio.sernageomin.cl/items/b232e677-1bca-4f84-9171-3b55da5e7e95Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:45:02Zoai:ri.conicet.gov.ar:11336/233864instacron: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:34982025-09-03 09:45:03.098CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Exceptionally preserved Early Cretaceous stalked crinoids from the Agrio Formation, Neuquén basin, west-central Argentina
title Exceptionally preserved Early Cretaceous stalked crinoids from the Agrio Formation, Neuquén basin, west-central Argentina
spellingShingle Exceptionally preserved Early Cretaceous stalked crinoids from the Agrio Formation, Neuquén basin, west-central Argentina
Lazo, Dario Gustavo
CRINOIDEA
AGRIO FM
SAND WAVES
NEUQUÉN BASIN
title_short Exceptionally preserved Early Cretaceous stalked crinoids from the Agrio Formation, Neuquén basin, west-central Argentina
title_full Exceptionally preserved Early Cretaceous stalked crinoids from the Agrio Formation, Neuquén basin, west-central Argentina
title_fullStr Exceptionally preserved Early Cretaceous stalked crinoids from the Agrio Formation, Neuquén basin, west-central Argentina
title_full_unstemmed Exceptionally preserved Early Cretaceous stalked crinoids from the Agrio Formation, Neuquén basin, west-central Argentina
title_sort Exceptionally preserved Early Cretaceous stalked crinoids from the Agrio Formation, Neuquén basin, west-central Argentina
dc.creator.none.fl_str_mv Lazo, Dario Gustavo
Bressan, Graciela Susana
Schwarz, Ernesto
Veiga, Gonzalo Diego
author Lazo, Dario Gustavo
author_facet Lazo, Dario Gustavo
Bressan, Graciela Susana
Schwarz, Ernesto
Veiga, Gonzalo Diego
author_role author
author2 Bressan, Graciela Susana
Schwarz, Ernesto
Veiga, Gonzalo Diego
author2_role author
author
author
dc.subject.none.fl_str_mv CRINOIDEA
AGRIO FM
SAND WAVES
NEUQUÉN BASIN
topic CRINOIDEA
AGRIO FM
SAND WAVES
NEUQUÉN BASIN
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Crinoid beds were studied from the Valanginian beds of the Agrio Formation, in the Cerro Mesa area, located 20 km northeast of the city of Zapala (Neuquén Basin, Argentina). Deposits represent a mixed clastic-carbonate succession broadly interpreted as storm-influenced shoreface to offshore settings. Crinoid paleocommunities developed in association with large migratory subaqueous dunes (sand waves) and were preserved in a number of stacked crinoid beds including a key surface with 20 specimens highly articulated. This is the first record of complete stalked crinoids from the Early Cretaceous of South America. Two distinct modes of occurrence have been recognized through a detailed taphonomic analysis. Well-preserved articulated specimens associated with rapid burial probably by avalanching processes and disarticulated specimens with more extensive periods of exposure before final burial. The specimens are provisionally assigned to the genus Isocrinus (Family Isocrinidae). However, some diagnostic characters remain unknown.
Fil: Lazo, Dario Gustavo. 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: Bressan, Graciela Susana. 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: Schwarz, Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Veiga, Gonzalo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
XIII Congreso Geológico Chileno
Antofagasta
Chile
Sociedad Geológica de Chile
description Crinoid beds were studied from the Valanginian beds of the Agrio Formation, in the Cerro Mesa area, located 20 km northeast of the city of Zapala (Neuquén Basin, Argentina). Deposits represent a mixed clastic-carbonate succession broadly interpreted as storm-influenced shoreface to offshore settings. Crinoid paleocommunities developed in association with large migratory subaqueous dunes (sand waves) and were preserved in a number of stacked crinoid beds including a key surface with 20 specimens highly articulated. This is the first record of complete stalked crinoids from the Early Cretaceous of South America. Two distinct modes of occurrence have been recognized through a detailed taphonomic analysis. Well-preserved articulated specimens associated with rapid burial probably by avalanching processes and disarticulated specimens with more extensive periods of exposure before final burial. The specimens are provisionally assigned to the genus Isocrinus (Family Isocrinidae). However, some diagnostic characters remain unknown.
publishDate 2012
dc.date.none.fl_str_mv 2012
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
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/11336/233864
Exceptionally preserved Early Cretaceous stalked crinoids from the Agrio Formation, Neuquén basin, west-central Argentina; XIII Congreso Geológico Chileno; Antofagasta; Chile; 2012; 764-766
CONICET Digital
CONICET
url http://hdl.handle.net/11336/233864
identifier_str_mv Exceptionally preserved Early Cretaceous stalked crinoids from the Agrio Formation, Neuquén basin, west-central Argentina; XIII Congreso Geológico Chileno; Antofagasta; Chile; 2012; 764-766
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://repositorio.sernageomin.cl/items/b232e677-1bca-4f84-9171-3b55da5e7e95
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
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Sociedad Geológica de Chile
publisher.none.fl_str_mv Sociedad Geológica de Chile
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
_version_ 1842268706171781120
score 13.13397

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