Biogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), Argentina

Fil: Carmona, Noelia Beatriz. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.

Detalles Bibliográficos
Autores: Carmona, Noelia Beatriz, Ponce, Juan José, Wetzel, Andreas
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:Argentina
Institución:Universidad Nacional de Río Negro
Repositorio:RID-UNRN (UNRN)
Idioma:inglés
OAI Identifier:oai:rid.unrn.edu.ar:20.500.12049/9054
Acceso en línea:https://pubs.geoscienceworld.org/sepm/palaios/article-abstract/33/9/431/548358/BIOGENIC-STRUCTURES-OF-UNIONIFORM-BIVALVES-IN-WET?redirectedFrom=fulltext
http://rid.unrn.edu.ar/handle/20.500.12049/9054
https://doi.org/10.2110/palo.2018.030
Access Level:acceso abierto
Palabra clave:Ciencias Exactas y Naturales
Río Negro
Formation
ichnology
id AR_6488e4e40141edf82ee7064c074aeb5e
oai_identifier_str oai:rid.unrn.edu.ar:20.500.12049/9054
network_acronym_str AR
network_name_str Argentina
repository_id_str
dc.title.none.fl_str_mv Biogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), Argentina
title Biogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), Argentina
spellingShingle Biogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), Argentina
Carmona, Noelia Beatriz
Ciencias Exactas y Naturales
Río Negro
Formation
ichnology
Ciencias Exactas y Naturales
title_short Biogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), Argentina
title_full Biogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), Argentina
title_fullStr Biogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), Argentina
title_full_unstemmed Biogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), Argentina
title_sort Biogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), Argentina
dc.creator.none.fl_str_mv Carmona, Noelia Beatriz
Ponce, Juan José
Wetzel, Andreas
author Carmona, Noelia Beatriz
author_facet Carmona, Noelia Beatriz
Ponce, Juan José
Wetzel, Andreas
author_role author
author2 Ponce, Juan José
Wetzel, Andreas
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Exactas y Naturales
Río Negro
Formation
ichnology
Ciencias Exactas y Naturales
topic Ciencias Exactas y Naturales
Río Negro
Formation
ichnology
Ciencias Exactas y Naturales
description Fil: Carmona, Noelia Beatriz. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.
publishDate 2018
dc.date.none.fl_str_mv 2018-09
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 Carmona, Ponce, Wetzel (2018). Biogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), Argentina. Palaios; (33) 9; 431-440
0883-1351
https://pubs.geoscienceworld.org/sepm/palaios/article-abstract/33/9/431/548358/BIOGENIC-STRUCTURES-OF-UNIONIFORM-BIVALVES-IN-WET?redirectedFrom=fulltext
http://rid.unrn.edu.ar/handle/20.500.12049/9054
https://doi.org/10.2110/palo.2018.030
identifier_str_mv Carmona, Ponce, Wetzel (2018). Biogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), Argentina. Palaios; (33) 9; 431-440
0883-1351
url https://pubs.geoscienceworld.org/sepm/palaios/article-abstract/33/9/431/548358/BIOGENIC-STRUCTURES-OF-UNIONIFORM-BIVALVES-IN-WET?redirectedFrom=fulltext
http://rid.unrn.edu.ar/handle/20.500.12049/9054
https://doi.org/10.2110/palo.2018.030
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://pubs.geoscienceworld.org/palaios
(33) 9
Palaios
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv SEPM
publisher.none.fl_str_mv SEPM
dc.source.none.fl_str_mv reponame:RID-UNRN (UNRN)
instname:Universidad Nacional de Río Negro
instname_str Universidad Nacional de Río Negro
reponame_str RID-UNRN (UNRN)
collection RID-UNRN (UNRN)
repository.name.fl_str_mv RID-UNRN (UNRN) - Universidad Nacional de Río Negro
repository.mail.fl_str_mv rid@unrn.edu.ar
_version_ 1799196783280128000
spelling Biogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), ArgentinaCarmona, Noelia BeatrizPonce, Juan JoséWetzel, AndreasCiencias Exactas y NaturalesRío NegroFormationichnologyCiencias Exactas y NaturalesFil: Carmona, Noelia Beatriz. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.Fil: Ponce, Juan José. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.Fil: Wetzel, Andreas. Geologisch–Palaontologisches Institut, Universitat Basel, Bernoullistrasse 32, CH-4056 Basel, SwitzerlandEnvironmental changes within a Neogene coastal dune system are recorded by endobenthic unioniform bivalves that lived in muddy or sandy interdune pond sediments. These bivalves were suspension-filter feeders that formed dense, almost monospecific communities in the wet-interdune deposits of the continental intervals of the Río Negro Formation (late Miocene–early Pliocene). Activity of unioniform bivalves appears to be related to sediment type; resting and locomotion traces dominate in the muddy heterolithic facies, whereas equilibrium/escape structures prevail in the sand-dominated heterolithic facies. These traces characterize two scenarios of the wet-interdune development. First, during high and/or relatively stable water levels, bivalves colonized the muddy bottom and produced resting and locomotion traces. When water level dropped due to desiccation, biogenic structures were impacted by the formation of mud cracks and subsequently covered by sand delivered by migrating dunes. Second, in spite of dune migration, some interdune areas remained wet or flooded and, in response to sediment aggradation, the bivalves produced equilibrium or escape structures, depending on the thickness of eolian sand cover. Only the integration of ichnologic and sedimentologic observations allows deciphering the evolution of the Neogene wet-interdune system in such a detail.Environmental changes within a Neogene coastal dune system are recorded by endobenthic unioniform bivalves that lived in muddy or sandy interdune pond sediments. These bivalves were suspension-filter feeders that formed dense, almost monospecific communities in the wet-interdune deposits of the continental intervals of the Río Negro Formation (late Miocene–early Pliocene). Activity of unioniform bivalves appears to be related to sediment type; resting and locomotion traces dominate in the muddy heterolithic facies, whereas equilibrium/escape structures prevail in the sand-dominated heterolithic facies. These traces characterize two scenarios of the wet-interdune development. First, during high and/or relatively stable water levels, bivalves colonized the muddy bottom and produced resting and locomotion traces. When water level dropped due to desiccation, biogenic structures were impacted by the formation of mud cracks and subsequently covered by sand delivered by migrating dunes. Second, in spite of dune migration, some interdune areas remained wet or flooded and, in response to sediment aggradation, the bivalves produced equilibrium or escape structures, depending on the thickness of eolian sand cover. Only the integration of ichnologic and sedimentologic observations allows deciphering the evolution of the Neogene wet-interdune system in such a detail.SEPM2018-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfCarmona, Ponce, Wetzel (2018). Biogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), Argentina. Palaios; (33) 9; 431-4400883-1351https://pubs.geoscienceworld.org/sepm/palaios/article-abstract/33/9/431/548358/BIOGENIC-STRUCTURES-OF-UNIONIFORM-BIVALVES-IN-WET?redirectedFrom=fulltexthttp://rid.unrn.edu.ar/handle/20.500.12049/9054https://doi.org/10.2110/palo.2018.030enghttps://pubs.geoscienceworld.org/palaios(33) 9Palaiosinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2024-05-10T11:50:50Zoai:rid.unrn.edu.ar:20.500.12049/9054instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692024-05-10 11:50:50.645RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse
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