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Simulation of the Planetary Interior Differentiation Processes in the Laboratory
Published on: November 15, 2013
Las pruebas acopladas 142Nd-143Nd de un prolongado océano de magma en Marte
V Debaille1, A D Brandon, Q Z Yin
1Lunar and Planetary Institute, 3600 Bay Area Boulevard, Houston, Texas 77058, USA. debaille@lpi.usra.edu
Nature
|November 23, 2007
Resumen
Marte Marte es el planeta Marte.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- La geoquímica es la geoquímica.
- Cosmoquímica es la cosmoquímica.
Sus antecedentes:
- La diferenciación temprana de silicatos es clave para comprender la evolución de los planetas terrestres.
- La longevidad del océano de magma planetario está poco limitada.
- El interior de Marte conserva registros de diferenciación temprana debido a la convección limitada.
Objetivo del estudio:
- Para resolver las escalas de tiempo de diferenciación temprana de silicato en Marte.
- Para investigar la historia de la cristalización del océano de magma marciano.
Principales métodos:
- Se utilizaron cronómetros de corta duración 146Sm-142Nd y de larga duración 147Sm-143Nd.
- Analizó un conjunto de meteoritos marcianos de Shergottite, Nakhla y Chassigny (SNC).
Principales resultados:
- La diferenciación de silicatos marcianos se produjo durante aproximadamente 100 millones de años después de la formación del núcleo.
- Los datos sugieren una progresiva cristalización de un océano de magma.
- La solidificación prolongada indica una atmósfera marciana primitiva y gruesa.
Conclusiones:
- La historia temprana de diferenciación de silicatos de Marte está limitada por el análisis de meteoritos.
- Un océano de magma de larga vida apunta a una tasa de enfriamiento reducida debido a una atmósfera temprana gruesa.
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