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El flujo de paleo-fluido controlado por fractura en Candor Chasma, Marte
Chris H Okubo1, Alfred S McEwen
1Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA. chriso@lpl.arizona.edu
Science (New York, N.Y.)
|February 17, 2007
Resumen
Se encontraron zonas localizadas de alteración de fluidos a lo largo de las articulaciones en el Candor Chasma de Marte. Esto indica el flujo de fluidos subterráneos pasados a través de fracturas, destacando los depósitos fracturados como sitios clave para estudiar la historia geológica del agua de Marte.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Geología Geología Geología.
- Astrobiología Astrobiología.
Sus antecedentes:
- Los depósitos en capas en el Candor Chasma de Marte preservan un registro del pasado geológico del planeta.
- Comprender las interacciones fluido-roca es crucial para descifrar la historia hidrológica de Marte.
Objetivo del estudio:
- Para investigar la evidencia de alteración de fluidos en el pasado dentro de depósitos en capas en el oeste de Candor Chasma.
- Para determinar el papel de las fracturas en la migración de fluidos subterráneos en Marte.
Principales métodos:
- Análisis de las observaciones de color del Experimento Científico de Imágenes de Alta Resolución (HiRISE) en el Orbitador de Reconocimiento de Marte (MRO).
- Identificación de zonas de cementación y blanqueamiento localizadas a lo largo de las uniones dentro de depósitos en capas.
Principales resultados:
- Zonas observadas de alteración localizada del fluido, incluyendo cementación y blanqueo, a lo largo de las articulaciones.
- Estas zonas de alteración indican la migración y cementación de fluidos subterráneos en el pasado.
- La erosión posterior ha expuesto estas características de alteración del subsuelo en la superficie.
Conclusiones:
- El flujo de fluidos a lo largo de las fracturas fue un mecanismo significativo para la migración de fluidos subterráneos en estos depósitos marcianos en capas.
- Los depósitos fracturados en capas se identifican como objetivos prometedores para futuras investigaciones sobre la historia geológica del agua en Marte.
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