Palaeoenvironmental analysis based on alluvial ostracod assemblages of the Cenicero section (lower Miocene, NW Ebro Basin)

In this work we perform for the first time a palaeoenvironmental and biostratigraphic analysis of the lower Miocene alluvial deposits of the Cenicero section (NW sector of the Ebro Basin; N Iberian Peninsula), based on the ostracod and micromammal assemblages. One of the main characteristics of this...

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Autores: Martínez García, Blanca María, Suárez Hernando, Oier, Hernández, J. M., Suárez Bilbao, Aitziber, Murelaga Bereicua, Javier
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/18207
Acceso en línea:http://hdl.handle.net/10810/18207
Access Level:acceso abierto
Palabra clave:ostracods
micromammals
Palaeoecology
Biostratigraphy
lower Miocene
ebro basin
turiec basin
spain
evolution
paleosols
slovakia
ecology
bird
GEOLOGY
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repository_id_str
spelling Palaeoenvironmental analysis based on alluvial ostracod assemblages of the Cenicero section (lower Miocene, NW Ebro Basin)Martínez García, Blanca MaríaSuárez Hernando, OierHernández, J. M.Suárez Bilbao, AitziberMurelaga Bereicua, JavierostracodsmicromammalsPalaeoecologyBiostratigraphylower Mioceneebro basinturiec basinspainevolutionpaleosolsslovakiaecologybirdGEOLOGYIn this work we perform for the first time a palaeoenvironmental and biostratigraphic analysis of the lower Miocene alluvial deposits of the Cenicero section (NW sector of the Ebro Basin; N Iberian Peninsula), based on the ostracod and micromammal assemblages. One of the main characteristics of this section is the unusual abundance on non-reworked ostracods present in the studied samples compared to other European sequences of similar age and sedimentary environment. This fact has allowed us to develop precise palaeoenvironmental reconstructions. The variations of the identified ostracod assemblages, defined by species such as Cyclocypris laevis, Ilyocypris bradyi, Ilyocypris gibba, Limnocythere sp. or Pseudocandona parallela, record the development of small, ephemeral and shallow ponds in a distal alluvial and/or floodplain environment. Towards the upper part of the section the ponds appear to be less ephemeral, being the aquatic systems more stable for ostracods development. Variations in the water temperature and salinity have been observed along the section, which are related to changes in the local pluviometric regime. On the other hand, the presence of micromammals in one of the studied samples has allowed the precise dating of this section. Thus, the presence of Armantomys daamsi dates the Cenicero section as Agenian (lower Miocene), local zone Y2 (MN2).Consejo Superior de Investigaciones Científicas, Museo Nacional de Ciencias Naturales201620162015info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/18207reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoEspañolhttp://estudiosgeol.revistas.csic.es/index.php/estudiosgeol/article/view/918/1000info:eu-repo/semantics/openAccess© 2015 CSIC. This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial (by-nc) Spain 3.0 Licenseoai:addi.ehu.eus:10810/182072026-06-18T09:23:17Z
dc.title.none.fl_str_mv Palaeoenvironmental analysis based on alluvial ostracod assemblages of the Cenicero section (lower Miocene, NW Ebro Basin)
title Palaeoenvironmental analysis based on alluvial ostracod assemblages of the Cenicero section (lower Miocene, NW Ebro Basin)
spellingShingle Palaeoenvironmental analysis based on alluvial ostracod assemblages of the Cenicero section (lower Miocene, NW Ebro Basin)
Martínez García, Blanca María
ostracods
micromammals
Palaeoecology
Biostratigraphy
lower Miocene
ebro basin
turiec basin
spain
evolution
paleosols
slovakia
ecology
bird
GEOLOGY
title_short Palaeoenvironmental analysis based on alluvial ostracod assemblages of the Cenicero section (lower Miocene, NW Ebro Basin)
title_full Palaeoenvironmental analysis based on alluvial ostracod assemblages of the Cenicero section (lower Miocene, NW Ebro Basin)
title_fullStr Palaeoenvironmental analysis based on alluvial ostracod assemblages of the Cenicero section (lower Miocene, NW Ebro Basin)
title_full_unstemmed Palaeoenvironmental analysis based on alluvial ostracod assemblages of the Cenicero section (lower Miocene, NW Ebro Basin)
title_sort Palaeoenvironmental analysis based on alluvial ostracod assemblages of the Cenicero section (lower Miocene, NW Ebro Basin)
dc.creator.none.fl_str_mv Martínez García, Blanca María
Suárez Hernando, Oier
Hernández, J. M.
Suárez Bilbao, Aitziber
Murelaga Bereicua, Javier
author Martínez García, Blanca María
author_facet Martínez García, Blanca María
Suárez Hernando, Oier
Hernández, J. M.
Suárez Bilbao, Aitziber
Murelaga Bereicua, Javier
author_role author
author2 Suárez Hernando, Oier
Hernández, J. M.
Suárez Bilbao, Aitziber
Murelaga Bereicua, Javier
author2_role author
author
author
author
dc.subject.none.fl_str_mv ostracods
micromammals
Palaeoecology
Biostratigraphy
lower Miocene
ebro basin
turiec basin
spain
evolution
paleosols
slovakia
ecology
bird
GEOLOGY
topic ostracods
micromammals
Palaeoecology
Biostratigraphy
lower Miocene
ebro basin
turiec basin
spain
evolution
paleosols
slovakia
ecology
bird
GEOLOGY
description In this work we perform for the first time a palaeoenvironmental and biostratigraphic analysis of the lower Miocene alluvial deposits of the Cenicero section (NW sector of the Ebro Basin; N Iberian Peninsula), based on the ostracod and micromammal assemblages. One of the main characteristics of this section is the unusual abundance on non-reworked ostracods present in the studied samples compared to other European sequences of similar age and sedimentary environment. This fact has allowed us to develop precise palaeoenvironmental reconstructions. The variations of the identified ostracod assemblages, defined by species such as Cyclocypris laevis, Ilyocypris bradyi, Ilyocypris gibba, Limnocythere sp. or Pseudocandona parallela, record the development of small, ephemeral and shallow ponds in a distal alluvial and/or floodplain environment. Towards the upper part of the section the ponds appear to be less ephemeral, being the aquatic systems more stable for ostracods development. Variations in the water temperature and salinity have been observed along the section, which are related to changes in the local pluviometric regime. On the other hand, the presence of micromammals in one of the studied samples has allowed the precise dating of this section. Thus, the presence of Armantomys daamsi dates the Cenicero section as Agenian (lower Miocene), local zone Y2 (MN2).
publishDate 2015
dc.date.none.fl_str_mv 2015
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/18207
url http://hdl.handle.net/10810/18207
dc.language.none.fl_str_mv Español
language_invalid_str_mv Español
dc.relation.none.fl_str_mv http://estudiosgeol.revistas.csic.es/index.php/estudiosgeol/article/view/918/1000
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Consejo Superior de Investigaciones Científicas, Museo Nacional de Ciencias Naturales
publisher.none.fl_str_mv Consejo Superior de Investigaciones Científicas, Museo Nacional de Ciencias Naturales
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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