Ichnological research in Lower Cretaceous marginal-marine facies from Patagonia: outcrop studies, SEM examinations and paleontological/sedimentological integration

Autores
Fernández, Diana Elizabeth; Pazos, Pablo Jose
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In-depth ichnological studies of Lower Cretaceous, marginal-marine facies from the Agrio Formation (Patagonia, Argentina) have been carried out during the past few years. Several ichnofossils were identified and described for the first time in this unit, including a new ichnospecies (Hillichnus agrioensis) produced by tellinid bivalves, xiphosurid trackways (the first record from the Early Cretaceous worldwide) and dinosaur tracks (one of the few examples from Early Cretaceous carbonates in Gondwana). The sedimentological information showed the presence of marginal-marine intervals previously interpreted as open marine. The outcrop studies resulted in the finding of indirect evidence of microbial mats, while SEM examinations resulted in the direct evidence of their presence in certain levels; this has taphonomical implications. Both ichnological and sedimentological results allowed to challenge previous facies model belts that suggested permanent submerged littoral facies for this part of the basin during the Early Cretaceous. The inferred paleoenvironment for the top of the unit is shallower and more tidally-influenced than previously thought.
Fil: Fernández, Diana Elizabeth. 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; Argentina
Fil: Pazos, Pablo Jose. 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; Argentina
Materia
Agrio Formation
Patagonia
Trace Fossils
Ichnology
Lower Cretaceous
Xiphosurid Trackways
Dinosaur Tracks
Miss
Sem
Marginal Marine
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:11336/20558
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Ichnological research in Lower Cretaceous marginal-marine facies from Patagonia: outcrop studies, SEM examinations and paleontological/sedimentological integrationFernández, Diana ElizabethPazos, Pablo JoseAgrio FormationPatagoniaTrace FossilsIchnologyLower CretaceousXiphosurid TrackwaysDinosaur TracksMissSemMarginal Marinehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1In-depth ichnological studies of Lower Cretaceous, marginal-marine facies from the Agrio Formation (Patagonia, Argentina) have been carried out during the past few years. Several ichnofossils were identified and described for the first time in this unit, including a new ichnospecies (Hillichnus agrioensis) produced by tellinid bivalves, xiphosurid trackways (the first record from the Early Cretaceous worldwide) and dinosaur tracks (one of the few examples from Early Cretaceous carbonates in Gondwana). The sedimentological information showed the presence of marginal-marine intervals previously interpreted as open marine. The outcrop studies resulted in the finding of indirect evidence of microbial mats, while SEM examinations resulted in the direct evidence of their presence in certain levels; this has taphonomical implications. Both ichnological and sedimentological results allowed to challenge previous facies model belts that suggested permanent submerged littoral facies for this part of the basin during the Early Cretaceous. The inferred paleoenvironment for the top of the unit is shallower and more tidally-influenced than previously thought.Fil: Fernández, Diana Elizabeth. 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; ArgentinaFil: Pazos, Pablo Jose. 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; ArgentinaE Schweizerbartsche Verlags2015-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/20558Fernández, Diana Elizabeth; Pazos, Pablo Jose; Ichnological research in Lower Cretaceous marginal-marine facies from Patagonia: outcrop studies, SEM examinations and paleontological/sedimentological integration; E Schweizerbartsche Verlags; Neues Jahrbuch Fur Geologie Und Palaontologie-abhandlungen; 277; 2; 8-2015; 177-1880077-7749CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1127/njgpa/2015/0500info:eu-repo/semantics/altIdentifier/url/http://www.ingentaconnect.com/content/schweiz/njbgeol/2015/00000277/00000002/art00006info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:46:11Zoai:ri.conicet.gov.ar:11336/20558instacron: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:34982025-09-29 09:46:11.875CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ichnological research in Lower Cretaceous marginal-marine facies from Patagonia: outcrop studies, SEM examinations and paleontological/sedimentological integration
title Ichnological research in Lower Cretaceous marginal-marine facies from Patagonia: outcrop studies, SEM examinations and paleontological/sedimentological integration
spellingShingle Ichnological research in Lower Cretaceous marginal-marine facies from Patagonia: outcrop studies, SEM examinations and paleontological/sedimentological integration
Fernández, Diana Elizabeth
Agrio Formation
Patagonia
Trace Fossils
Ichnology
Lower Cretaceous
Xiphosurid Trackways
Dinosaur Tracks
Miss
Sem
Marginal Marine
title_short Ichnological research in Lower Cretaceous marginal-marine facies from Patagonia: outcrop studies, SEM examinations and paleontological/sedimentological integration
title_full Ichnological research in Lower Cretaceous marginal-marine facies from Patagonia: outcrop studies, SEM examinations and paleontological/sedimentological integration
title_fullStr Ichnological research in Lower Cretaceous marginal-marine facies from Patagonia: outcrop studies, SEM examinations and paleontological/sedimentological integration
title_full_unstemmed Ichnological research in Lower Cretaceous marginal-marine facies from Patagonia: outcrop studies, SEM examinations and paleontological/sedimentological integration
title_sort Ichnological research in Lower Cretaceous marginal-marine facies from Patagonia: outcrop studies, SEM examinations and paleontological/sedimentological integration
dc.creator.none.fl_str_mv Fernández, Diana Elizabeth
Pazos, Pablo Jose
author Fernández, Diana Elizabeth
author_facet Fernández, Diana Elizabeth
Pazos, Pablo Jose
author_role author
author2 Pazos, Pablo Jose
author2_role author
dc.subject.none.fl_str_mv Agrio Formation
Patagonia
Trace Fossils
Ichnology
Lower Cretaceous
Xiphosurid Trackways
Dinosaur Tracks
Miss
Sem
Marginal Marine
topic Agrio Formation
Patagonia
Trace Fossils
Ichnology
Lower Cretaceous
Xiphosurid Trackways
Dinosaur Tracks
Miss
Sem
Marginal Marine
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In-depth ichnological studies of Lower Cretaceous, marginal-marine facies from the Agrio Formation (Patagonia, Argentina) have been carried out during the past few years. Several ichnofossils were identified and described for the first time in this unit, including a new ichnospecies (Hillichnus agrioensis) produced by tellinid bivalves, xiphosurid trackways (the first record from the Early Cretaceous worldwide) and dinosaur tracks (one of the few examples from Early Cretaceous carbonates in Gondwana). The sedimentological information showed the presence of marginal-marine intervals previously interpreted as open marine. The outcrop studies resulted in the finding of indirect evidence of microbial mats, while SEM examinations resulted in the direct evidence of their presence in certain levels; this has taphonomical implications. Both ichnological and sedimentological results allowed to challenge previous facies model belts that suggested permanent submerged littoral facies for this part of the basin during the Early Cretaceous. The inferred paleoenvironment for the top of the unit is shallower and more tidally-influenced than previously thought.
Fil: Fernández, Diana Elizabeth. 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; Argentina
Fil: Pazos, Pablo Jose. 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; Argentina
description In-depth ichnological studies of Lower Cretaceous, marginal-marine facies from the Agrio Formation (Patagonia, Argentina) have been carried out during the past few years. Several ichnofossils were identified and described for the first time in this unit, including a new ichnospecies (Hillichnus agrioensis) produced by tellinid bivalves, xiphosurid trackways (the first record from the Early Cretaceous worldwide) and dinosaur tracks (one of the few examples from Early Cretaceous carbonates in Gondwana). The sedimentological information showed the presence of marginal-marine intervals previously interpreted as open marine. The outcrop studies resulted in the finding of indirect evidence of microbial mats, while SEM examinations resulted in the direct evidence of their presence in certain levels; this has taphonomical implications. Both ichnological and sedimentological results allowed to challenge previous facies model belts that suggested permanent submerged littoral facies for this part of the basin during the Early Cretaceous. The inferred paleoenvironment for the top of the unit is shallower and more tidally-influenced than previously thought.
publishDate 2015
dc.date.none.fl_str_mv 2015-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/20558
Fernández, Diana Elizabeth; Pazos, Pablo Jose; Ichnological research in Lower Cretaceous marginal-marine facies from Patagonia: outcrop studies, SEM examinations and paleontological/sedimentological integration; E Schweizerbartsche Verlags; Neues Jahrbuch Fur Geologie Und Palaontologie-abhandlungen; 277; 2; 8-2015; 177-188
0077-7749
CONICET Digital
CONICET
url http://hdl.handle.net/11336/20558
identifier_str_mv Fernández, Diana Elizabeth; Pazos, Pablo Jose; Ichnological research in Lower Cretaceous marginal-marine facies from Patagonia: outcrop studies, SEM examinations and paleontological/sedimentological integration; E Schweizerbartsche Verlags; Neues Jahrbuch Fur Geologie Und Palaontologie-abhandlungen; 277; 2; 8-2015; 177-188
0077-7749
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1127/njgpa/2015/0500
info:eu-repo/semantics/altIdentifier/url/http://www.ingentaconnect.com/content/schweiz/njbgeol/2015/00000277/00000002/art00006
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.publisher.none.fl_str_mv E Schweizerbartsche Verlags
publisher.none.fl_str_mv E Schweizerbartsche Verlags
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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score 13.070432

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