Cuantificación del desplazamiento dextroso Alpino en la cordillera Ibérica a partir de datos gravimétricos

Abstract

Intraplate deformation in the eastern zone of the Iberian Peninsula is characterized by strike-slip faulting during Tertiary. Gradient pattern of Bouguer Anomaly Map of the Spanish Central SystemIberian Range linking zone are related to main crustal faults. Gradients pattern has been analysed by means of a raster type Geographic Information System. Two main gradien orientations associated with Spanish Central System structures (NE-SW) and with Iberian Range structures (NW-SE) have been established. Gradient map and artificial shading image have been used to quantify dextral slip along NOSE faults. Slip value reach a figure of 34 km. Assuming that the slip began in Oligocene times, movement rate between the Spanish Central System and the Iberian Range Castilian Branch is 0.93 mm/y. Considering a Middle Miocene start a 2.2 mm/y slip rate is computed