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A Study of the Complexation of Mercury(II) with Dicysteinyl Tetrapeptides by Electrospray Ionization Mass Spectrometry
Published on: January 8, 2016
Volcanismo en Mercurio: evidencia del primer sobrevuelo del MESSENGER
James W Head1, Scott L Murchie, Louise M Prockter
1Department of Geological Sciences, Brown University, Providence, RI 02912, USA. James_Head@brown.edu
Science (New York, N.Y.)
|July 5, 2008
Resumen
Los nuevos datos de MESSENGER revelan respiraderos volcánicos en Mercurio, lo que apoya un origen volcánico para sus llanuras. Esto resuelve un debate de larga data sobre la historia geológica del planeta.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Volcanología Volcanología.
- Geología Geología Geología.
Sus antecedentes:
- El origen de las llanuras de Mercurio ha sido objeto de debate desde las misiones Mariner 10.
- Los posibles orígenes incluyen inundaciones volcánicas o estanques de eyecciones de impacto.
Objetivo del estudio:
- Para investigar el origen de las llanuras de Mercurio utilizando nuevos datos de alta resolución.
- Para determinar el papel del vulcanismo en la historia geológica de Mercurio.
Principales métodos:
- Análisis de imágenes de alta resolución (hasta 150 metros por píxel) del sobrevuelo del MESSENGER.
- Examen de imágenes en color y distribuciones de frecuencia de tamaño de cráter de impacto.
- Identificación de los respiraderos volcánicos y las características geológicas indicativas de la actividad volcánica e intrusiva.
Principales resultados:
- Pruebas de respiraderos volcánicos encontrados alrededor de la cuenca de Caloris.
- Las llanuras se colocaron secuencialmente dentro y alrededor de los cráteres de impacto, superando varios kilómetros de espesor.
- Características como graben radial y cráteres fracturados en el suelo sugieren actividad intrusiva.
Conclusiones:
- Los hallazgos apoyan fuertemente un origen volcánico para varias regiones de llanuras en Mercurio.
- El vulcanismo jugó un papel importante en la configuración de la evolución geológica de Mercurio.
- Esta investigación resuelve la controversia que rodea el origen de las llanuras de Mercurio.
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