Journal of Micropalaeontology
Journal of Micropalaeontology
JM
Articles | Volume 43, issue 1
Articles | Volume 43, issue 1
https://doi.org/10.5194/jm-43-55-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/jm-43-55-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 43, issue 1
Research article
 | 
11 Apr 2024
Research article |  | 11 Apr 2024

Nannofossils from the Middle Eocene Sabiñánigo Sandstone Formation in the Jaca Basin (southern Pyrenees): biostratigraphy and paleoenvironmental implications

Elizabeth R. Lasluisa, Oriol Oms, Eduard Remacha, Alba González-Lanchas, Hug Blanchar-Roca, and José Abel Flores

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Latest update: 29 Oct 2025
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Short summary
We studied sediment samples containing marine plankton under the polarized microscope from the Sabiñánigo sandstone formation, a geological formation located in the Jaca Basin in Spain. The main result of this work was a more precise age for the formation, the Bartonian age, in the Middle Eocene period. In addition, we obtained information on the temperature of the ocean water in which the plankton lived, resulting in the surface ocean waters in this area being warm and poor in nutrients.
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