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Ernesto Pecoits1, Kurt O Konhauser, Natalie R Aubet
1Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada.
Science (New York, N.Y.)
|February 23, 2013
Resumen
Nuevas pruebas apoyan una edad Ediacaran para la Formación Tacuarí.
Área de la Ciencia:
- Paleontología Paleontología.
- Geología Geología Geología.
- La estratigrafía es la estratigrafía.
Sus antecedentes:
- Se debate la edad de la Formación Tacuarí, con estudios previos que sugieren que puede no ser Ediacaran.
- Los restos fósiles dentro de la formación son clave para determinar su edad geológica.
Objetivo del estudio:
- Reevaluar la edad de la Formación Tacuarí.
- Proporcionar evidencia adicional que apoye una edad Ediacaran para los estratos que contienen huellas de fósiles.
Principales métodos:
- Reevaluación de las observaciones de campo.
- Análisis petrográfico de secciones delgadas de roca.
Principales resultados:
- Los datos de campo nuevos y existentes refuerzan la conclusión de una edad Ediacaran.
- La evidencia petrográfica apoya la reevaluación de la edad de la formación.
Conclusiones:
- Se ha confirmado que los estratos con restos fósiles de la Formación Tacuarí son Ediacaranos en edad.
- Este estudio refuta las sugerencias anteriores de una edad no ediacara basada en pruebas exhaustivas.
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