Writing on the mud: a Patagonian tale by sea pens and oysters

Autores
Casadio, Silvio A.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Sea pens are anthozoans belonging to the Order Pennatulacea with a wide geographic distribution but with a scarce fossil record. They are the only octocorals adapted to live in soft sediments. Unlike other octocorals, they have an axial polyp that has a rigid, calcareous axis and a peduncle. On the other hand, oysters are stable islands of hard substrate in the otherwise unstable soft muddy environment of the sea bottom. Here I present a comparison between a recent shoreface environment recorded in Bahía San Blas (Buenos Aires Province) with a conspicuous population of sea pens and oyster reefs. Also very fine-grained silty sandstones within the lower part of the Chenque Formation (early Miocene) at Rada Tilly (Chubut Province) containing hundreds of sea pen rods and oysters reefs. The results indicate that although actualism may be in dispute it still holds true as the cornerstone of sedimentology and taphonomy.
Simposio IX: El presente es la clave del pasado: importancia de los estudios actualistas en paleontología
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Paleontología
Patagonia
Sea pens
Oysters
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/16737
Acceder
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network_name_str SEDICI (UNLP)
spelling Writing on the mud: a Patagonian tale by sea pens and oystersCasadio, Silvio A.Ciencias NaturalesPaleontologíaPatagoniaSea pensOystersSea pens are anthozoans belonging to the Order Pennatulacea with a wide geographic distribution but with a scarce fossil record. They are the only octocorals adapted to live in soft sediments. Unlike other octocorals, they have an axial polyp that has a rigid, calcareous axis and a peduncle. On the other hand, oysters are stable islands of hard substrate in the otherwise unstable soft muddy environment of the sea bottom. Here I present a comparison between a recent shoreface environment recorded in Bahía San Blas (Buenos Aires Province) with a conspicuous population of sea pens and oyster reefs. Also very fine-grained silty sandstones within the lower part of the Chenque Formation (early Miocene) at Rada Tilly (Chubut Province) containing hundreds of sea pen rods and oysters reefs. The results indicate that although actualism may be in dispute it still holds true as the cornerstone of sedimentology and taphonomy.Simposio IX: El presente es la clave del pasado: importancia de los estudios actualistas en paleontologíaFacultad de Ciencias Naturales y Museo2010info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionResumenhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/16737enginfo:eu-repo/semantics/altIdentifier/isbn/978-987-95849-7-2info:eu-repo/semantics/reference/hdl/10915/25738info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T16:34:35Zoai:sedici.unlp.edu.ar:10915/16737Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:34:35.384SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Writing on the mud: a Patagonian tale by sea pens and oysters
title Writing on the mud: a Patagonian tale by sea pens and oysters
spellingShingle Writing on the mud: a Patagonian tale by sea pens and oysters
Casadio, Silvio A.
Ciencias Naturales
Paleontología
Patagonia
Sea pens
Oysters
title_short Writing on the mud: a Patagonian tale by sea pens and oysters
title_full Writing on the mud: a Patagonian tale by sea pens and oysters
title_fullStr Writing on the mud: a Patagonian tale by sea pens and oysters
title_full_unstemmed Writing on the mud: a Patagonian tale by sea pens and oysters
title_sort Writing on the mud: a Patagonian tale by sea pens and oysters
dc.creator.none.fl_str_mv Casadio, Silvio A.
author Casadio, Silvio A.
author_facet Casadio, Silvio A.
author_role author
dc.subject.none.fl_str_mv Ciencias Naturales
Paleontología
Patagonia
Sea pens
Oysters
topic Ciencias Naturales
Paleontología
Patagonia
Sea pens
Oysters
dc.description.none.fl_txt_mv Sea pens are anthozoans belonging to the Order Pennatulacea with a wide geographic distribution but with a scarce fossil record. They are the only octocorals adapted to live in soft sediments. Unlike other octocorals, they have an axial polyp that has a rigid, calcareous axis and a peduncle. On the other hand, oysters are stable islands of hard substrate in the otherwise unstable soft muddy environment of the sea bottom. Here I present a comparison between a recent shoreface environment recorded in Bahía San Blas (Buenos Aires Province) with a conspicuous population of sea pens and oyster reefs. Also very fine-grained silty sandstones within the lower part of the Chenque Formation (early Miocene) at Rada Tilly (Chubut Province) containing hundreds of sea pen rods and oysters reefs. The results indicate that although actualism may be in dispute it still holds true as the cornerstone of sedimentology and taphonomy.
Simposio IX: El presente es la clave del pasado: importancia de los estudios actualistas en paleontología
Facultad de Ciencias Naturales y Museo
description Sea pens are anthozoans belonging to the Order Pennatulacea with a wide geographic distribution but with a scarce fossil record. They are the only octocorals adapted to live in soft sediments. Unlike other octocorals, they have an axial polyp that has a rigid, calcareous axis and a peduncle. On the other hand, oysters are stable islands of hard substrate in the otherwise unstable soft muddy environment of the sea bottom. Here I present a comparison between a recent shoreface environment recorded in Bahía San Blas (Buenos Aires Province) with a conspicuous population of sea pens and oyster reefs. Also very fine-grained silty sandstones within the lower part of the Chenque Formation (early Miocene) at Rada Tilly (Chubut Province) containing hundreds of sea pen rods and oysters reefs. The results indicate that although actualism may be in dispute it still holds true as the cornerstone of sedimentology and taphonomy.
publishDate 2010
dc.date.none.fl_str_mv 2010
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info:eu-repo/semantics/publishedVersion
Resumen
http://purl.org/coar/resource_type/c_5794
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/16737
url http://sedici.unlp.edu.ar/handle/10915/16737
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/isbn/978-987-95849-7-2
info:eu-repo/semantics/reference/hdl/10915/25738
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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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