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Sistemas magmáticos verticalmente extensos e inestables: una visión unificada de los procesos ígneos

Katharine V Cashman¹, R Stephen J Sparks², Jonathan D Blundy²

¹School of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK. glkvc@bristol.ac.uk.

Science (New York, N.Y.)

|March 25, 2017

Resumen

Las erupciones volcánicas son impulsadas por sistemas de magma que se extienden a través de la Tierra

Área de la Ciencia:

Ciencias de la Tierra
Volcanología
Sistemas Magmáticos

Sus antecedentes:

Los estudios clásicos se centraron en las cámaras de magma de la corteza superior.
Investigaciones recientes hacen hincapié en los procesos magmáticos en toda la corteza.

Objetivo del estudio:

Examinar las pruebas de los sistemas magmáticos transcrustales.
Resaltar los procesos físicos que rigen la estabilidad y la desestabilización de las capas ricas en fundido.
Investigar las condiciones para el ascenso del derretimiento y la formación de cámaras de magma poco profundas.

Principales métodos:

Revisión de la literatura de las pruebas geológicas y geofísicas.
Análisis de los procesos físicos en los sistemas magmáticos.
Síntesis de datos sobre la generación, segregación y acumulación de la fusión.

Principales resultados:

Los sistemas magmáticos operan a través de la corteza, desde los niveles inferiores hasta los superiores.
Existe un equilibrio entre la lenta generación de fusión de la corteza inferior y la rápida acumulación de la corteza superior.
El debate activo rodea el estado físico, la distribución y la longevidad del derretimiento de la corteza.

Conclusiones:

Los sistemas magmáticos transcrustales son cruciales para comprender la actividad volcánica.
La desestabilización de las capas de fusión de la corteza inferior puede conducir a la formación de cámaras de magma poco profundas.
Las cámaras de magma poco profundas y efímeras juegan un papel clave en las erupciones volcánicas.

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