Skip navigation
Por favor, use este identificador para citar o enlazar este ítem: http://rid.unrn.edu.ar/handle/20.500.12049/9054

Registro completo de metadatos
Campo DC Valor Lengua/Idioma
dc.contributor.authorCarmona, Noelia Beatriz-
dc.contributor.authorPonce, Juan José-
dc.contributor.authorWetzel, Andreas-
dc.date.accessioned2022-08-30T15:29:33Z-
dc.date.available2022-08-30T15:29:33Z-
dc.date.issued2018-09-
dc.identifier.citationCarmona, Ponce, Wetzel (2018). Biogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), Argentina. Palaios; (33) 9; 431-440es_ES
dc.identifier.issn0883-1351es_ES
dc.identifier.otherhttps://pubs.geoscienceworld.org/sepm/palaios/article-abstract/33/9/431/548358/BIOGENIC-STRUCTURES-OF-UNIONIFORM-BIVALVES-IN-WET?redirectedFrom=fulltextes_ES
dc.identifier.urihttp://rid.unrn.edu.ar/handle/20.500.12049/9054-
dc.description.abstractEnvironmental 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.es_ES
dc.format.extentp. 431-440es_ES
dc.language.isoenes_ES
dc.publisherSEPMes_ES
dc.relation.urihttps://pubs.geoscienceworld.org/palaioses_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/-
dc.titleBiogenic structures of unioniform bivalves in wet-interdune deposits (Late Miocene-Early Pliocene), Argentinaes_ES
dc.typeArticuloes_ES
dc.rights.licenseCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-ND 4.0)-
dc.description.filiationCarmona, Noelia Beatriz. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.es_ES
dc.description.filiationPonce, Juan José. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.es_ES
dc.description.filiationWetzel, Andreas. Geologisch–Palaontologisches Institut, Universitat Basel, Bernoullistrasse 32, CH-4056 Basel, Switzerlandes_ES
dc.subject.keywordRío Negroes_ES
dc.subject.keywordFormationes_ES
dc.subject.keywordichnologyes_ES
dc.type.versioninfo:eu-repo/semantics/publishedVersiones_ES
dc.subject.materiaCiencias Exactas y Naturaleses_ES
dc.origin.lugarDesarrolloUniversidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geologíaes_ES
dc.relation.journalissue(33) 9es_ES
dc.description.reviewtruees_ES
dc.description.resumenEnvironmental 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.es_ES
dc.identifier.doihttps://doi.org/10.2110/palo.2018.030-
dc.relation.journalTitlePalaioses_ES
Aparece en las colecciones: Artículos

Archivos en este ítem:
Archivo Descripción Tamaño Formato  
Carmona Ponce Wetzel 2018 Palaios.pdf7,22 MBAdobe PDFVisualizar/Abrir

Este documento es resultado del financiamiento otorgado por el Estado Nacional, por lo tanto queda sujeto al cumplimiento de la Ley N° 26.899


Este ítem está sujeto a una licencia Creative Commons Licencia Creative Commons Creative Commons