Publication: Cuantificación de la deformación asociada a la falla de Berzosa (Sistema Central Español)
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1987
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Seminario de Estudos Galegos. Area de Xeoloxía e Minería ; Instituto Universitario de Xeoloxía "Isidro Parga Pondal"
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Abstract
En relación con la zona de cizalla dúctil de Berzosa Honrubia que actúa durante la segunda fase de deformación Hercínica, se han calculado los elipsoides de deformación
finita asociados a la misma. Para el cálculo se usan los métodos de Ramsay (1967), Dunnet (1969), y Fry (1979). Los resultados muestran una variación en el tipo de elipsoide a lo largo de la traza de la zona de cizalla. En los extremos tienen valores K>l. y en la parte central de K < 1 .
Estos valores se interpretan en función de la variación de la orientación entre la traza cartográfica de la falla y la dirección de transporte tectónico, localizándose los elipsoides con valores de K < 1, en la región donde la dirección de movimiento Y la traza son normales, y los elipsoides con K>l en la región donde son paralelos
In the ductil shear zone of Berzosa Honrubia, active during the Hercynic second phase, finite strain ellipsoids have been calculated. Methods of Rarnsay, Dunnet, and Fry have been used for this calculation. The results show a variation in the strain elipsoid shape through the shear zone trace. The central part hlts strain ellipsoids with K < 1 and in the edges it has ellipsoids with K> 1. Interpretation of those values is based on the variation in the orientation of the fault cartographic trace and tectonic transport direction. Ellipsoids with K < 1 are dominant in areas where the trace fault and the tectonic transport direction are normal. The values of K> 1 are located where the trace and tectonic transport direction are parallel
In the ductil shear zone of Berzosa Honrubia, active during the Hercynic second phase, finite strain ellipsoids have been calculated. Methods of Rarnsay, Dunnet, and Fry have been used for this calculation. The results show a variation in the strain elipsoid shape through the shear zone trace. The central part hlts strain ellipsoids with K < 1 and in the edges it has ellipsoids with K> 1. Interpretation of those values is based on the variation in the orientation of the fault cartographic trace and tectonic transport direction. Ellipsoids with K < 1 are dominant in areas where the trace fault and the tectonic transport direction are normal. The values of K> 1 are located where the trace and tectonic transport direction are parallel