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Ostwald maduración de las arcillas y minerales metamórficos
Science (New York, N.Y.)
|April 27, 1990
Resumen
Los minerales de arcilla se recristalizan a través de la maduración de Ostwald, preservando la historia geológica dentro del tamaño de las partículas. El análisis de estos tamaños revela procesos de formación minerales detallados y líneas de tiempo.
Área de la Ciencia:
- La geoquímica es la geoquímica.
- La mineralogía es la Mineralogía.
- Geología Geología Geología.
Sus antecedentes:
- Los minerales de arcilla y otros minerales diagenéticos/metamórficos se someten a la recristalización.
- La maduración de Ostwald es un mecanismo común que impulsa esta transformación mineral.
Objetivo del estudio:
- Para investigar la maduración de Ostwald en arcilla y minerales relacionados.
- Para demostrar cómo las distribuciones de tamaño de partícula registran los procesos de recristalización.
- Establecer un método para determinar la historia geológica de estos minerales.
Principales métodos:
- Análisis de las distribuciones de tamaño de partícula.
- Separación de diferentes tamaños de partículas de muestras de un solo mineral.
- Análisis químicos, estructurales e isotópicos independientes de tamaños de partículas separadas.
Principales resultados:
- Las formas de distribución del tamaño de las partículas se correlacionan con las leyes de la tasa de maduración de Ostwald.
- Un registro de la recristalización se conserva a través de diferentes tamaños de partículas.
- Se pueden reconstruir historias geológicas detalladas a partir de este registro conservado.
Conclusiones:
- La maduración de Ostwald es un proceso clave en la evolución de los ensamblajes de arcilla y minerales metamórficos.
- El análisis del tamaño de las partículas ofrece un nuevo enfoque para descifrar historias minerales complejas.
- Este método permite una reconstrucción detallada de las vías de formación y alteración de minerales.
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