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Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
Observaciones clementinas de la región aristarchus de la luna
Science (New York, N.Y.)
|December 16, 1994
Resumen
Los datos de la nave espacial Clementine revelan que la meseta Aristarchus en la Luna está cubierta de vidrio piroclástico, con basaltos de marea subyacentes. La región también contiene materiales ricos en olivino y anortosita, ofreciendo pistas sobre la historia geológica lunar.
Área de la Ciencia:
- Geología lunar geología lunar.
- Ciencias planetarias Ciencias planetarias.
- La teledetección es la sensorización remota.
Sus antecedentes:
- La meseta de Aristarco es una importante característica lunar con complejas características geológicas.
- Estudios anteriores han sugerido diversos materiales y procesos de formación en la región.
Objetivo del estudio:
- Investigar la composición y la historia geológica de la región de Aristarco utilizando datos multispectrales y topográficos.
- Para caracterizar los depósitos piroclásticos y los materiales subyacentes en la meseta de Aristarco.
- Para identificar y analizar composiciones minerales específicas dentro del cráter Aristarchus.
Principales métodos:
- Análisis de datos multispectrales y topográficos de la nave espacial Clementine.
- Interpretación de perfiles de altimetría para determinar la topografía de la meseta.
- Examen de las profundidades de excavación de cráteres para estimar el grosor de la capa piroclástica.
- Análisis de imágenes del infrarrojo cercano para identificar composiciones minerales.
Principales resultados:
- La meseta Aristarchus exhibe una caída de norte a noroeste y se eleva 2 km por encima de las lavas circundantes.
- El vidrio piroclástico oscuro y rojizo, de 10 a 30 metros de espesor, cubre la meseta.
- Los basaltos de mar se identifican debajo de los piroclásticos, expuestos en cráteres y ríos.
- Se detectan materiales ricos en olivina y afloramientos de anortosita en los picos centrales del cráter Aristarchus.
Conclusiones:
- Los depósitos piroclásticos y los basaltos subyacentes proporcionan información sobre la historia volcánica y de impacto de Aristarchus.
- El anortosito identificado puede representar derivados magmáticos locales o restos de la corteza lunar primordial.
- Los datos clementinos ofrecen una visión completa de la compleja evolución geológica de la región de Aristarco.
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