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Updated: Jul 12, 2026

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Sediment Core Extrusion Method at Millimeter Resolution Using a Calibrated, Threaded-rod
Published on: August 17, 2016
El evento del límite Eoceno/Oligoceno en las profundidades marinas
Resumen
El límite Eoceno/Oligoceno muestra cambios microfósiles graduales, no una extinción masiva. Los cambios paleoclimáticos, no un impacto de bólido, impulsaron los cambios bióticos del Paleógeno tardío.
Área de la Ciencia:
- Paleontología Paleontología.
- Micropaleontología Micropaleontología
- La paleoceanografía es la paleoceanografía.
Sus antecedentes:
- El límite entre el Eoceno y el Oligoceno es un intervalo crítico en la historia de la Tierra.
- Las hipótesis anteriores sugirieron un evento catastrófico, posiblemente un impacto de bólido, en este límite.
Objetivo del estudio:
- Para analizar los cambios bióticos a través de la frontera Eoceno/Oligoceno.
- Investigar las causas de los cambios bióticos durante el Paleógeno tardío.
Principales métodos:
- Análisis de microfósiles calcáreos.
- Análisis de microfósiles silícicos.
Principales resultados:
- Se observaron cambios bióticos graduales, sin evidencia de un evento de extinción masiva.
- Cambios bióticos identificados que se correlacionan con el cambio de las condiciones paleoclimáticas y paleoceanográficas.
- No se encontró apoyo para un evento de impacto de bólido que cause un evento biótico catastrófico.
Conclusiones:
- Los cambios bióticos a través de la frontera Eoceno/Oligoceno fueron graduales e impulsados por cambios ambientales.
- El Paleógeno tardío experimentó cambios paleoceanográficos y paleoclimáticos significativos que afectaron a la vida marina.
- Los datos refutan la hipótesis de una extinción masiva inducida por el impacto de un bólido en el límite Eoceno/Oligoceno.
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