Análisis de la deformación a partir del estudio de la anisotropia de susceptibilidad magnética (ASM) en una estructura de pliegues y cabalgamientos. Ejemplo de un corte del sector central del Pirineo Oscense
- Ó. Pueyo
- Á. González 1
- J. Ipas 1
- J. Manuel 1
- J.Á. Orgaz 1
- Á. Rodés 2
- F. Teixido 3
- A. Gil 1
- H. Millán 1
- 1 Dpto. de Ciencias de la Tierra, Universidad de Zaragoza
- 2 Facultad de Geología, Universidad de Barcelona
- 3 Instituto Jaume Aimera (CSIC)
ISSN: 1576-5172
Ano de publicación: 2004
Título do exemplar: VI CONGRESO GEOLÓGICO DE ESPAÑA (Zaragoza, 12-15 julio, 2004)
Número: 6
Páxinas: 327-330
Tipo: Artigo
Outras publicacións en: Geotemas (Madrid)
Resumo
A pyrenean section has been studied in order to search for a relationship between magnetic fabric (AMS) and deformation. The section, which is normal to the main ESE-WNW macrostructures, comprises materials from Devonian to Eocene (seven stations, with a total of 52 cores). It has been observed that in the internal zone of the chain the K1 AMS axis is parallel to the tectonic transport direction, and is transversal to the major structures. In the external zone, however, it is parallel tothe major structures. These results indicate that the magnetic lineation may be due to shearing during thrusting in the internal zone, and to flexural folding in the external one. This work stresses the utility of AMS in structural analysis.