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Gran caída de temperatura a través de la transición Eoceno-Oligoceno en el centro de América del Norte
Alessandro Zanazzi1, Matthew J Kohn, Bruce J MacFadden
1Department of Geological Sciences, University of South Carolina, Columbia, South Carolina 29208, USA. azanazzi@geol.sc.edu
Nature
|February 9, 2007
Resumen
La transición Eoceno-Oligoceno vio un enfriamiento continental significativo de 8.2 ° C durante 400.000 años, impactando a los reptiles y anfibios, pero no a los mamíferos. Este cambio climático probablemente fue impulsado por la disminución del dióxido de carbono atmosférico.
Área de la Ciencia:
- Paleoclimatología Paleoclimatología
- Paleontología Paleontología.
- La geoquímica es la geoquímica.
Sus antecedentes:
- La transición Eoceno-Oligoceno (aprox. Hace 33,5 millones de años) marcó un importante evento de enfriamiento del Cenozoico.
- Los registros climáticos marinos están bien estudiados, pero los cambios continentales siguen siendo menos comprendidos.
- Investigaciones anteriores arrojaron datos inconsistentes sobre el momento y la magnitud de los cambios climáticos continentales.
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