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El rover Perseverance revela un antiguo sistema de lagos del delta y depósitos de inundación en el cráter Jezero,
N Mangold1, S Gupta2, O Gasnault3
1Laboratoire Planétologie et Géodynamique, Centre National de Recherches Scientifiques, Université Nantes, Université Angers, Unité Mixte de Recherche 6112, 44322 Nantes, France.
Science (New York, N.Y.)
|October 7, 2021
Resumen
El rover Perseverance descubrió rocas sedimentarias en el cráter Jezero, Marte, lo que indica una transición de un entorno de lago persistente a eventos de inundación de alta energía. Esto revela la evolución hidrológica del cráter.
Área de la Ciencia:
- Ciencias planetarias
- Geología
- Hidrología
Sus antecedentes:
- El cráter Jezero en Marte exhibe un depósito sedimentario en forma de abanico.
- Las observaciones orbitales revelaron su presencia, pero el análisis detallado fue limitado.
Objetivo del estudio:
- Analice las imágenes del rover Perseverance para entender la evolución hidrológica del cráter Jezero.
- Investigar las formaciones rocosas sedimentarias en el depósito de ventilador.
Principales métodos:
- Análisis de las imágenes del rover tomadas en los primeros tres meses después del aterrizaje.
- Interpretación de las estructuras sedimentarias, incluidos los estratos inclinados y los conglomerados rocosos.
Principales resultados:
- Las caras de los afloramientos revelaron detalles nunca antes vistos del depósito de abanico.
- Los estratos inclinados sugieren la deposición del delta en un lago.
- Los estratos superiores compuestos de conglomerados de rocas indican deposiciones de inundación de alta energía.
Conclusiones:
- La sucesión sedimentaria en el cráter Jezero muestra una transición de un entorno de lago sostenido a flujos fluviales episódicos de alta energía.
- Esto proporciona información sobre la historia hidrológica dinámica de Marte.
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