RT journal article
T1 Active Shortening Simultaneous to Normal Faulting Based on GNSS, Geophysical, and Geological Data: The Seismogenic Ventas de Zafarraya Fault (Betic Cordillera, Southern Spain)
A1 Madarieta-Txurruka, Asier
A1 González-Castillo, Lourdes
A1 Peláez, José A.
A1 Galindo-Zaldivar, Jesús
A1 Borque, María J.
A1 Lacy, María C.
A1 Ruiz-Armenteros, Antonio M.
A1 Henares, Jesús
A1 Ruano, Patricia
A1 Sánchez Alzola, Alberto
A1 Avilés, Manuel
A1 Rodríguez-Caderot, Gracia
A1 Martínez-Moreno, Francisco José
A1 Tendero-Salmerón, Víctor
A1 Vinardell-Peña, Raquel
A1 Gil, Antonio J.
A2 Estadística e Investigación Operativa
K1 bending-moment fault
K1 Betic Cordillera
K1 compressional front
K1 GNSS network
K1 Granada Basin
K1 gravitational collapse
AB The central Betic Cordillera, southern Spain, is affected by an uplift related to the NNW–SSE Eurasia-Nubia convergence and shallow ENE–WSW orthogonal extension accommodated by the extensional system of the Granada Basin. The combination of geophysical, geodetic, and geological data reveals that the southwestern boundary of this extensional system is a seismically active compressional front extending from the W to the SW of the Granada Basin. The near-field Global Navigation Satellite System data determine NNE–SSW shortening of up to 2 mm/yr of the compressional front in the Zafarraya Polje. In this setting, the normal Ventas de Zafarraya Fault developed as a result of the bending-moment extension of the Sierra de Alhama antiform and was last reactivated during the 1884 Andalusian earthquake (Mw 6.5). The uplift in the central Betic Cordillera together with the subsidence in the Western Alborán Basin may facilitate a westward to southwestward gravitational collapse through the extensional detachment of the Granada Basin. The heterogeneous crust of the Betic Cordillera would generate the compressional front, which is divided into two sectors: thrusting to the west, and folding associated with buttressing to the south. Our results evidence that basal detachments, linking extensional fault activity with compressional fronts, may determine the activity of local surface structures and the geological hazard in densely populated regions
PB John Wiley and Sons Inc
SN 1944-9194
YR 2024
FD 2024
LK http://hdl.handle.net/10498/32620
UL http://hdl.handle.net/10498/32620
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026