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Updated: Jul 12, 2026

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Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt
Published on: August 7, 2017
Un modelo de iniciación de pluma de manto para el basalto de inundación de wrangellia y otras mesetas oceánicas
Resumen
Las Wrangellia terrane se encuentran en tierra.
Área de la Ciencia:
- Geología Geología Geología.
- La tectónica de placas es la tectónica de placas.
- Volcanología Volcanología.
Sus antecedentes:
- El Wrangellia terrane en Alaska y Columbia Británica es una gran meseta oceánica acrecentada.
- Los estratos del Triásico revelan una gruesa secuencia de basalto de inundación (3-6 km) intercalado entre rocas sedimentarias marinas.
Objetivo del estudio:
- Para investigar los procesos de formación de los basaltos de inundación del terreno de Wrangellia.
- Para probar la aplicabilidad del modelo de cabeza de pluma del manto a la formación de la meseta oceánica.
Principales métodos:
- Análisis geológico de los estratos del Triásico en el terreno de Wrangellia.
- Comparación de la historia geológica de Wrangellia con modelos de iniciación del penacho del manto.
Principales resultados:
- El terreno de Wrangellia experimentó una elevación rápida y una erupción masiva de basalto en 5 millones de años, seguida de un hundimiento.
- Esta secuencia se alinea con las predicciones del modelo de iniciación del penacho del manto para el volcanismo de inundación continental.
- Se sugieren procesos de formación similares para otras mesetas oceánicas como Ontong-Java y Kerguelen.
Conclusiones:
- La iniciación del penacho del manto proporciona un modelo viable para la rápida formación de grandes mesetas oceánicas.
- Estos eventos son significativos en el desarrollo de la corteza oceánica y continental.
- El terreno de Wrangellia sirve como un ejemplo clave de formación de meseta oceánica impulsada por plumas.
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