Estructura de la Cuenca de Ugíjar a partir de datos gravimétricos y magnéticos (Zonas Internas, Cordillera Bética Central)
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Abstract
Nuevas medidas gravimétricas y magnéticas adquiridas en la Cuenca
de Ugíjar contribuyen a determinar el espesor de su relleno sedimentario y
las estructuras que deforman las rocas sedimentarias y el basamento. La
combinación de los resultados gravimétricos con datos geológicos de superficie
confirma la asimetría de la cuenca, condicionada por el funcionamiento,
en su borde sur, de fallas ENE-OSO y componente dextrorsa-normal.
En el borde norte, el techo del basamento profundiza con pendiente regional
constante hacia el sur aunque hay estructuras tectónicas que deforman
el relleno sedimentario. La existencia de dipolos magnéticos de pequeña entidad
en el sector N está probablemente relacionada con mineralizaciones
metálicas discontínuas asociadas al contacto Alpujárride/Nevado-Filábride
New gravity and magnetic data reveal the geometry and thickness of the Ugíjar basin infill and provide additional information about the tectonic structures that deform both the basin and the basement rocks. As previous geological data suggested, the basin is asymmetric and highly conditioned by the activity of ENE-WSW trending faults with right-lateral/normal kinematics that are located in the southern border of the basin. At the northern boundary, the basement top dips smoothly southwards, although there are minor tectonic structures that deform up to the sedimentary infill. Magnetic dipoles have been detected in the northern part of the studied sector, probably associated with small and disperse metallic mineralizations deposited along the Alpujárride/Nevado-Filábride contact
New gravity and magnetic data reveal the geometry and thickness of the Ugíjar basin infill and provide additional information about the tectonic structures that deform both the basin and the basement rocks. As previous geological data suggested, the basin is asymmetric and highly conditioned by the activity of ENE-WSW trending faults with right-lateral/normal kinematics that are located in the southern border of the basin. At the northern boundary, the basement top dips smoothly southwards, although there are minor tectonic structures that deform up to the sedimentary infill. Magnetic dipoles have been detected in the northern part of the studied sector, probably associated with small and disperse metallic mineralizations deposited along the Alpujárride/Nevado-Filábride contact







