Caracterización paleoambiental de los yacimientos de Paracuellos-3 y Paracuellos-5 (Mioceno medio, Cuenca de Madrid) a partir de la estructura de pesos corporales de las faunas de mamíferos
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Abstract
El evento de enfriamiento global del Mioceno medio ha sido descrito, a escala local, en el centro de la Península Ibérica (Cuenca de
Madrid). Algunos yacimientos paleontológicos como Somosaguas
(14,1 Ma) y Cerro de los Batallones (9 Ma) han sido ampliamente
estudiados. Además, otros yacimientos situados temporalmente entre ellos, como los yacimientos de Paracuellos del Jarama, tienen un
gran potencial de estudio. En este trabajo se han caracterizado los
paleoambientes de los yacimientos de Paracuellos-5 (13,7 Ma) y Paracuellos-3 (12,8 Ma), ambos pertenecientes al Mioceno medio, para
dar una visión más completa de las características paleoambientales
de este intervalo. Se emplearon seis modelos cuantitativos de inferencia climática basados en la estructura de pesos corporales de los
mamíferos para estimar la temperatura y la precipitación en el área
de estudio. Las inferencias ambientales obtenidas permiten exponer
la hipótesis de que en un intervalo de tiempo menor a 1 millón de
años, el ambiente existente en Paracuellos tuvo una tendencia hacia
el aumento de la humedad, aún manteniéndose como un ambiente
de extrema aridez
The middle Miocene global cooling event has been described at a local scale in central Spain (Madrid Basin). There are well-studied fossil sites as Somosaguas (14.1 Ma) and Cerro de los Batallones (9 Ma). In addition, other fossil sites situated temporarily between them, such as the Paracuellos del Jarama fossil sites have a great potential. In this work, the palaeoenvironments of Paracuellos-5(13.7 Ma) and Paracuellos-3 (12.8 Ma) sites, both from the middle Miocene, have been characterized to show a more complete view of the environmental characteristics prevailing during this period. Six quantitative climatic inference models based on body-size structure of mammal faunas have been used to estimate temperature and precipitation of the study area. The obtained environmental inferences allow formulating the hypothesis that, in a time interval of less than 1 million years, the environment of Paracuellos experienced a trend through slightly more humid conditions, remaining as an extremely arid environment
The middle Miocene global cooling event has been described at a local scale in central Spain (Madrid Basin). There are well-studied fossil sites as Somosaguas (14.1 Ma) and Cerro de los Batallones (9 Ma). In addition, other fossil sites situated temporarily between them, such as the Paracuellos del Jarama fossil sites have a great potential. In this work, the palaeoenvironments of Paracuellos-5(13.7 Ma) and Paracuellos-3 (12.8 Ma) sites, both from the middle Miocene, have been characterized to show a more complete view of the environmental characteristics prevailing during this period. Six quantitative climatic inference models based on body-size structure of mammal faunas have been used to estimate temperature and precipitation of the study area. The obtained environmental inferences allow formulating the hypothesis that, in a time interval of less than 1 million years, the environment of Paracuellos experienced a trend through slightly more humid conditions, remaining as an extremely arid environment







