Mediciones de temperatura en lagos de lava de carbonatita y flujos desde oldoinyo lengai, Tanzania
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Resumen
Oldoinyo Lengai fue una de ellas.
Área de la Ciencia:
- Volcanología Volcanología.
- La geoquímica es la geoquímica.
- Petrología Petrología.
Sus antecedentes:
- La petrogénesis de la carbonatita ofrece información sobre los procesos del manto y la evolución del magma rico en CO2.
- Oldoinyo Lengai es el único volcán de carbonatita activo de la Tierra, con una erupción única de lava rica en sodio.
Objetivo del estudio:
- Para investigar las características físicas de los fundidos de carbonatita.
- Para medir las temperaturas y las viscosidades de los flujos de lava y lagos de carbonatita activa.
Principales métodos:
- Mediciones de temperatura in situ de los flujos y lagos de lava activos.
- 1-Experimentos de fusión en atmósfera en muestras de carbonatita natural.
Principales resultados:
- Las temperaturas de la lava de carbonatita oscilaron entre 491 y 544 °C, significativamente más bajas que las de las lavas de silicato.
- La fusión de carbonatita exhibió viscosidades más bajas en comparación con las lavas basálticas fluidas a las temperaturas observadas.
Conclusiones:
- El estudio confirma temperaturas magmáticas inusualmente bajas para los fundidos de carbonatita.
- Los hallazgos proporcionan datos cruciales sobre las propiedades físicas del magma de carbonatita activa.
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