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Simulation of the Planetary Interior Differentiation Processes in the Laboratory
Published on: November 15, 2013
Mineralogía global y historia acuosa de Marte derivada de los datos de OMEGA/Mars Express
Jean-Pierre Bibring1, Yves Langevin, John F Mustard
1Institut d'Astrophysique Spatiale (IAS), Bâtiment 121, 91405 Orsay Campus, France.
Science (New York, N.Y.)
|April 22, 2006
Resumen
El mapeo mineralógico revela la historia geológica de Marte a través de tres épocas: una alteración acuosa temprana que forma filosilicatos, una era posterior de sulfato ácido y un período final de intemperie seca que forma óxidos de hierro.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- La mineralogía es la Mineralogía.
- Geología Geología Geología.
Sus antecedentes:
- El instrumento OMEGA (Observatoire pour la Mineralogie, l'Eau, les Glaces et l'Activité) proporciona datos minerológicos globales para Marte.El instrumento OMEGA es un instrumento de observación de Marte que se encuentra en el centro de la Tierra.
- Comprender la historia geológica y climática de Marte es crucial para la ciencia planetaria.
Objetivo del estudio:
- Para analizar los datos minerales globales del instrumento OMEGA para reconstruir la historia geológica y climática de Marte.
- Identificar distintas épocas mineralógicas y sus condiciones ambientales asociadas en Marte.
Principales métodos:
- Utilizando datos del instrumento OMEGA en la nave espacial Mars Express de la Agencia Espacial Europea.
- Realización de mapas minerológicos globales para identificar las firmas minerales clave.
Principales resultados:
- Los filosilicatos, indicativos de una alteración acuosa temprana, son frecuentes en los antiguos terrenos marcianos (era filociana).
- Los sulfatos, formados en un ambiente ácido, caracterizan una era posterior (la era theiikian).
- Los óxidos férricos anhídridos, formados por el lento desgaste superficial sin agua líquida significativa, dominan la era más reciente (siderikian), comenzando hace aproximadamente 3.500 millones de años.
Conclusiones:
- Marte experimentó distintas épocas geológicas y climáticas, cada una caracterizada por procesos específicos de formación mineral.
- El Marte primitivo fue moldeado por una significativa alteración acuosa, seguida de condiciones ácidas, y en última instancia, un ambiente de superficie más seco y dominado por el clima.
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