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Preparation and Reactivity of Gasless Nanostructured Energetic Materials
Published on: April 2, 2015
Actividad piroclástica en la placa de origen en el cráter Gusev, Marte
S W Squyres1, O Aharonson, B C Clark
1Department of Astronomy, Space Sciences Building, Cornell University, Ithaca, NY 14853, USA.
Science (New York, N.Y.)
|May 5, 2007
Resumen
Home Plate, una meseta marciana, revela orígenes volcánicos explosivos. Sus rocas sugieren que el material piroclástico se depositó y luego fue reelaborado por el viento, ofreciendo información sobre Marte.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Geología Geología Geología.
- Volcanología Volcanología.
Sus antecedentes:
- Home Plate es una meseta en capas ubicada dentro del cráter Gusev en Marte.
- Se caracteriza por rocas clásticas de composición de basalto alcalino moderadamente alterada.
- Estas rocas están notablemente enriquecidas en elementos altamente volátiles.
Objetivo del estudio:
- Investigar el origen y los mecanismos de emplazamiento de la meseta de Home Plate.
- Diferenciar entre los orígenes volcánicos y de impacto para las características geológicas observadas.
- Para entender los procesos de deposición y post-deposición que dieron forma a la meseta.
Principales métodos:
- Análisis de la textura de los estratos rocosos.
- Investigación geoquímica de la composición de las rocas.
- Análisis comparativo de modelos de explosión volcánica frente a modelos de cráteres de impacto.
Principales resultados:
- La unidad inferior de Home Plate exhibe texturas indicativas de emplazamiento durante un evento explosivo.
- Los datos geoquímicos favorecen fuertemente un origen volcánico explosivo sobre un origen de impacto.
- La unidad superior parece ser material eólico (reelaborado por el viento) derivado de la misma fuente piroclástica que la unidad inferior.
Conclusiones:
- La meseta de Home Plate se interpreta como un producto de la explosiva actividad volcánica en Marte.
- La estructura en capas refleja la deposición piroclástica inicial seguida de una modificación eólica.
- Este hallazgo contribuye a la comprensión de la historia volcánica y atmosférica de Marte.
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