148395 20260219090940.0 doi 10.55407/geogaceta104481 sideral 141767 ART-2024-141767 eng Larena, Zuriñe d13C and d18O-based interpretation of Miocene carbonates of the Miranda-Trebiño basin, NE Iberia: preliminary insights 2024 Access copy available to the general public Unrestricted The stable isotopes (C and O), bulk mineralogy and sedimentary facies types of the Miocene lacustrine palustrine carbonates of the Cucho Section (Miranda-Trebiño basin, N Iberia) are studied. The results indicate deposition in a freshwater carbonate lake recording significant biogenic CO2 input, changing Precipitation/Evaporation rates and variations in vegetation cover and pedogenesis on palustrine areas. Short-lived stages of higher salinity and evaporative conditions are recorded by the relative abundance of fine-grained dolomite. The highest δ13C values suggest 12C sequestration in anoxic bottom waters due to water column stratification. These new data support the general deepening trend of the lake system established from previous sedimentological analyses. info:eu-repo/semantics/openAccess by-nc-sa https://creativecommons.org/licenses/by-nc-sa/4.0/deed.es 0.2 2024 0.168 2024 Geology 2024 Q4 0.4 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Arenas, Concha Universidad de Zaragoza (orcid)0000-0002-4212-0524 Murelaga, Xabier Baceta, Juan Ignacio 2000 280 Universidad de Zaragoza Dpto. Ciencias de la Tierra Área Estratigrafía 76 (2024), 19-22 Geogaceta Geogaceta 0213-683X 522219 http://zaguan.unizar.es/record/148395/files/texto_completo.pdf Versión publicada 3092101 http://zaguan.unizar.es/record/148395/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:148395 articulos driver 2026-02-19-09:00:48 ARTICLE