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Paleoclima: una atractiva Tierra bola de nieve que todavía es difícil de tragar
Science (New York, N.Y.)
|September 11, 2007
Resumen
La hipótesis de la Tierra bola de nieve propone que la Tierra estuvo completamente congelada durante millones de años. La evidencia reciente apoya que los glaciares fluyen hacia los mares tropicales, un aspecto clave de este antiguo escenario climático.
Área de la Ciencia:
- Ciencias de la Tierra Ciencias de la Tierra Ciencias de la Tierra
- Paleoclimatología Paleoclimatología
- Geología Geología Geología.
Sus antecedentes:
- La hipótesis de la Tierra bola de nieve sugiere un evento de glaciación global.
- Esta teoría tiene como objetivo explicar las observaciones enigmáticas de la era Neoproterozoica.
Objetivo del estudio:
- Evaluar la aceptación científica y la evidencia de apoyo para la hipótesis de la Tierra bola de nieve.
- Para resaltar el consenso reciente sobre aspectos específicos de la teoría.
Principales métodos:
- Revisión de la evidencia geológica de la era Neoproterozoica.
- Análisis de datos relacionados con la glaciación antigua y los niveles del mar.
Principales resultados:
- La hipótesis de la Tierra bola de nieve, aunque inicialmente controvertida, está ganando fuerza científica.
- Una parte significativa de la comunidad científica ahora acepta que los glaciares se extendieron a los mares tropicales durante este período.
Conclusiones:
- La teoría de la Tierra bola de nieve proporciona una explicación plausible para las anomalías geológicas pasadas.
- La creciente evidencia apoya la ocurrencia de eventos extremos de glaciación global en la historia de la Tierra.
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