Active continental subduction beneath the Betic Cordillera and the AlboranSea

P- and S-wave seismic tomography detect a low-velocity anomaly in the upper mantle beneath the Betic Cordillera and the Alboran Sea region. The anomal y is associated with the intermediate-depth seismicity (h < 110 km) in the region. This structure is interpreted as a result of an active continental subduction. Gravity modeling and seismic attenuation also show the continen tal nature of the low-velocity zone. Stresses determined from the focal mec hanisms of the intermediate-depth earthquakes also agree with the scenario of continental subduction, which is caused by the middle-late Miocene to pr esent-day northwest-southeast convergence of the African and European plate s and the continental collision that raised the cordillera.