Calibrating lower-middle Miocene mammal faunas and unravelling climate change during the Miocene Climate Optimum: the Bardenas Reales de Navarra record (Ebro basin, NE Iberian Peninsula)

Larrasoaña, Juan Cruz; Suárez-Hernando, Oier; Beamud, Elisabet; Garcés, Miguel; Pérez de Landazábal Berganzo, José Ignacio; Gómez Polo, Cristina; Ruiz-Sánchez, Francisco Javier; Mata, María Pilar; Murelaga, Xabier

Calibrating lower-middle Miocene mammal faunas and unravelling climate change during the Miocene Climate Optimum: the Bardenas Reales de Navarra record (Ebro basin, NE Iberian Peninsula)

dc.contributor.author	Larrasoaña, Juan Cruz
dc.contributor.author	Suárez-Hernando, Oier
dc.contributor.author	Beamud, Elisabet
dc.contributor.author	Garcés, Miguel
dc.contributor.author	Pérez de Landazábal Berganzo, José Ignacio
dc.contributor.author	Gómez Polo, Cristina
dc.contributor.author	Ruiz-Sánchez, Francisco Javier
dc.contributor.author	Mata, María Pilar
dc.contributor.author	Murelaga, Xabier
dc.contributor.department	Ciencias	es_ES
dc.contributor.department	Zientziak	eu
dc.contributor.department	Institute for Advanced Materials and Mathematics - INAMAT2	en
dc.date.accessioned	2025-02-24T09:49:39Z
dc.date.available	2025-02-24T09:49:39Z
dc.date.issued	2024-10-22
dc.date.updated	2025-02-24T09:45:14Z
dc.description.abstract	The chronology of lower Miocene Iberian small mammal faunas is still poorly constrained given the scarcity of well dated sedimentary successions including small mammal fossil localities. Such scarcity has prevented also an accurate understanding of the response of European terrestrial ecosystem to global changes across the Miocene climate optimum (MCO), one of the best analogues of present-day global warming. Here we present an updated fossil small mammal record of the Bardenas Reales de Navarra (western Ebro basin, Spain), where an expanded lower to middle Miocene continental succession is superbly exposed. Previous and new magnetostratigraphic results from this succession have enabled us to propose, along with additional magnetostratigraphically-dated Iberian faunas, a new chronology for local zones Y to D (Mammal Neogene zones MN2 to MN5). In addition to that, the studied small mammal faunas point to a gradual increase in temperature and humidity conditions in SW Europe between 20 and 15.5 Ma, which appears to be coupled with the progressive shift towards warmer regional (Atlantic) and global conditions across the MCO, thereby pointing to gradual changes in oceanic circulation as the main driver of this period of global warmth. The evolution of sedimentary facies appears to indicate a threshold response of the Ebro basin hydrological balance to the MCO, whereas pedogenic formation of magnetic minerals seems to be linked to periods of enhanced climate variability. These results highlight the need of combining different paleoenvironmental indicators in order to obtain a reliable view of the response of continental ecosystems to global warming.	en
dc.description.sponsorship	This study was supported by project BARCLIM (BR23/5), granted by the Junta de Bardenas Reales de Navarra, and by the Consolidated Research Group IT-1602-22 of the Basque Government Research System. Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature.
dc.format.mimetype	application/pdf	en
dc.format.mimetype	application/zip	en
dc.identifier.citation	Larrasoaña, J. C., Suarez-Hernando, O., Beamud, E., Garcés, M., Pérez-Landazábal, J. I., Gómez-Polo, C., Ruiz-Sánchez, F. J., Mata, M. P., Murelaga, X. (2024). Calibrating lower-middle Miocene mammal faunas and unravelling climate change during the Miocene Climate Optimum: the Bardenas Reales de Navarra record (Ebro basin, NE Iberian Peninsula). Journal of Iberian Geology, 1-26. https://doi.org/10.1007/s41513-024-00265-7.
dc.identifier.doi	10.1007/s41513-024-00265-7
dc.identifier.issn	1698-6180
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/53543
dc.language.iso	eng
dc.publisher	Springer
dc.relation.ispartof	Journal of Iberian Geology (2024)
dc.relation.publisherversion	https://doi.org/10.1007/s41513-024-00265-7
dc.rights	© 2024 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License.
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/
dc.subject	Ebro basin	en
dc.subject	Environmental magnetism	en
dc.subject	Iberian Peninsula	en
dc.subject	Magnetochronology	en
dc.subject	Miocene climate optimum	en
dc.subject	Small mammals	en
dc.title	Calibrating lower-middle Miocene mammal faunas and unravelling climate change during the Miocene Climate Optimum: the Bardenas Reales de Navarra record (Ebro basin, NE Iberian Peninsula)	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/publishedVersion
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