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Updated: Jul 11, 2026
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Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
Published on: August 5, 2016
Rapido hundimiento continental después del inicio y evolución de la subducción
Science (New York, N.Y.)
|March 20, 1992
Resumen
La topografía dinámica de la subducción de losas provoca un rápido hundimiento continental. Los modelos numéricos revelan que estas tasas coinciden con la acumulación de sedimentos del Fanerozoico a lo largo de los márgenes de las placas norteamericanas.
Área de la Ciencia:
- La geodinámica es la geodinámica.
- La tectónica es la tectónica.
- La sedimentología sedimentológica.
Sus antecedentes:
- Los procesos de margen activo, incluida la topografía dinámica, influyen en la litosfera continental.
- Las explicaciones anteriores para el hundimiento a menudo se centraban en la carga supracrustal.
Objetivo del estudio:
- Para investigar el papel de la topografía dinámica en el hundimiento continental durante el cierre de la cuenca oceánica.
- Para comparar las tasas de hundimiento dinámico con la acumulación de sedimentos.
Principales métodos:
- Modelado numérico de iniciación y evolución de la topografía dinámica.
- Análisis de las tasas de hundimiento en relación con la reducción de la profundidad de las losas y el cierre de las cuencas oceánicas.
Principales resultados:
- Las tasas dinámicas de hundimiento pueden exceder los 100 metros por millón de años.
- Estas tasas son comparables a la acumulación de sedimentos del Fanerozoico a lo largo de márgenes convergentes.
Conclusiones:
- La topografía dinámica es un factor importante del rápido hundimiento en los márgenes continentales activos.
- El modelado numérico proporciona información crucial sobre los procesos tectónicos que anteriormente se atribuían únicamente a la carga superficial.
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