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Evidencia de un volcanismo joven en Mercurio desde el tercer sobrevuelo del MESSENGER
Louise M Prockter1, Carolyn M Ernst, Brett W Denevi
1Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA. Louise.Prockter@jhuapl.edu
Science (New York, N.Y.)
|July 22, 2010
Resumen
Los datos de la nave espacial MESSENGER revelan un extenso volcanismo temprano en Mercurio. La evidencia sugiere que la actividad volcánica, incluidos los respiraderos explosivos, persistió durante un tiempo significativo, potencialmente en la historia posterior del sistema solar.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Volcanología Volcanología.
- El cráter de impacto es el cráter de impacto.
Sus antecedentes:
- La nave espacial MESSENGER proporcionó datos cruciales sobre la evolución geológica de Mercurio.
- Observaciones anteriores indicaron actividad volcánica temprana en Mercurio.
Objetivo del estudio:
- Para analizar los datos de los sobrevuelos de MESSENGER para comprender el vulcanismo de Mercurio.
- Para investigar el origen y el momento de las características geológicas en Mercurio.
Principales métodos:
- Análisis de imágenes de alta resolución de los sobrevuelos de la nave espacial MESSENGER.
- Análisis espectral de las características de la superficie, incluidas las llanuras lisas y las cuencas de impacto.
- Interpretación geológica de las formas de relieve y las estructuras de impacto volcánicas.
Principales resultados:
- Confirmación del vulcanismo temprano generalizado en Mercurio.
- Descubrimiento de una cuenca joven de 290 km de anillo de picos con llanuras lisas y espectralmente distintas de origen volcánico.
- Identificación de un gran candidato explosivo de ventilación volcánica con depósitos brillantes.
Conclusiones:
- El vulcanismo de Mercurio fue generalizado y ocurrió durante un período prolongado.
- Las llanuras volcánicas dentro de la cuenca del anillo de picos indican un volcanismo efusivo posterior a la formación de la cuenca.
- Los hallazgos sugieren que la actividad volcánica en Mercurio puede haberse extendido hasta la segunda mitad de la historia del sistema solar.
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