Las antiguas intrusiones ígneas y la expansión temprana de la Luna reveladas por la gradiometría gravitatoria de GRAIL
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Updated: May 16, 2026
06:14
Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
Published on: July 30, 2020
Jeffrey C Andrews-Hanna1, Sami W Asmar, James W Head
1Department of Geophysics and Center for Space Resources, Colorado School of Mines, Golden, CO 80401, USA. jcahanna@mines.edu
Science (New York, N.Y.)
|December 11, 2012
Resumen
Las antiguas intrusiones lunares, identificadas utilizando datos de gravedad de GRAIL, revelan la expansión temprana de la Luna. Estos diques subterráneos sugieren un período de estiramiento global en la historia temprana de la Luna.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Geología Lunar Geología Lunar
- La geofísica es la geofísica.
Sus antecedentes:
- La historia temprana de la Luna está oscurecida por impactos en la superficie.
- Las estructuras subterráneas pueden contener pistas sobre el antiguo pasado de la Luna.
Objetivo del estudio:
- Para investigar las estructuras subterráneas de la Luna utilizando gradiometría gravitacional.
- Para entender los primeros procesos geológicos lunares y la expansión.
Principales métodos:
- Aplicación de la gradiometría de gravedad a los datos de la misión del Laboratorio de Recuperación e Interiorismo por Gravedad (GRAIL).
- Inversión de anomalías de gravedad para identificar estructuras subterráneas.
- Análisis de las relaciones transversales para determinar la edad.
Principales resultados:
- Identificación de numerosas anomalías de gravedad lineal, que indican intrusiones subterráneas (diques).
- Estas intrusiones se interpretan como evidencia de magmatismo y extensión litosférica.
- Los diques datan de los períodos pre-nectarianos a nectarianos, anteriores al final del bombardeo pesado.
Conclusiones:
- La Luna experimentó un período de estrés extensional isotrópico global temprano en su historia.
- Esta extensión es consistente con un aumento del radio lunar de 0,6 a 4,9 km.
- Los hallazgos apoyan los modelos térmicos que predicen la expansión lunar temprana.
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