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Partición de deslizamiento por propagación elastoplástica de deslizamiento oblicuo en profundidad
David Bowman1, Geoffrey King, Paul Tapponnier
1Department of Geological Sciences, California State University, Fullerton, 800 State College Boulevard, Fullerton, CA 92834-6850, USA. dbowman@fullerton.edu
Science (New York, N.Y.)
|May 17, 2003
Resumen
La partición del deslizamiento a lo largo de los límites tectónicos se explica por la propagación hacia arriba del deslizamiento oblicuo, creando zonas de fallas distintas. Este modelo predice con precisión los tipos de fallas observadas en los principales sistemas de fallas.
Área de la Ciencia:
- Geología Estructural Geología Estructural
- Tectonofísica es la física de las tectonas.
- Mecánica de los terremotos Mecánica de los terremotos
Sus antecedentes:
- El movimiento oblicuo en los límites tectónicos a menudo se divide en fallas con diferentes sentidos de deslizamiento.
- Comprender el origen de la partición de deslizamiento es crucial para la geología estructural, la tectonofísica y la mecánica de los terremotos.
Objetivo del estudio:
- Para explicar el fenómeno de la partición de deslizamiento a lo largo de las fronteras tectónicas.
- Para investigar el papel de la propagación elastoplástica en la formación de fallas.
Principales métodos:
- Modelación de la propagación elastoplástica ascendente del deslizamiento oblicuo desde una falla o zona de corte más profunda.
- Analizando el campo de deformación resultante por delante de la falla de propagación.
Principales resultados:
- El campo de deformación por delante de la falla se divide en zonas distintas de fallas normales, inversas y de deslizamiento.
- El modelo predice con éxito la distribución observada de los tipos de fallas.
Conclusiones:
- El particionamiento de deslizamiento puede explicarse por la propagación elastoplástica del deslizamiento oblicuo.
- El modelo proporciona un mecanismo viable para comprender el comportamiento de las fallas en los límites tectónicos, validado por observaciones de campo.
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