The central Alboran Sea active tectonics: implications in seismic hazard of indenter and roll-back interaction

The Alboran Sea constitutes one of the most active margins of Iberia related to the NW-SE convergence of Eurasia and Nubia (Western Africa),that produced the present-day continental collision. The recent evolution of the easternmostAlboran Sea is driven by anindenter tectonics that formed the Aguilas Arc-Vera Gulf and the central Alboran Sea indenters. Theyhave reached different rate of development,sharingseveral common features: they are bounded by two sets of strike slip faults, NNE-SSW sinistral(generally most active)and NW-SE dextralfaults,beingassociated to folds. In the central Alboran Sea, the prominent Alboran ridge isanENE-WSW antiform developed by the detached cover on a rigid basement. The central Alboran Sea indenter determines the main features of the Trans Alboran Shear Zone, awide deformational strip that concentrates most of the active folds, strike-slip faults andseismicity connectingthe Moroccan coast in the Al Hoceima area and the Spanish coast in the Campo de Daliasregion. This deformation zone occurs in the western boundary of the central Alboran Sea indenter and is affected by the interaction with roll-backtectonicsthat produced thedeep,low deformed and sinking of the WesternAlboran Sea Basin surrounded by the Gibraltar Arc. In thisa framework of migrationof the deformation,new faults developed westwards of the formed ones. The integration of onshoreand offshore geological, seismic, geophysical and geodetical observations isessential to reveal in detail the recent deformation of the regionand the interplay of folds and faults

Bibliographic Details

Main Authors:	Galindo-Zaldívar, Jesús, Ercilla, Gemma, Estrada, Ferran, Peláez Montilla, José A., Gil, Antonio J., Tendero-Salmerón, Víctor, Vázquez, Juan Tomás, Madarieta-Txurruka, Asier, González Castillo, Lourdes
Other Authors:	Ministerio de Economía y Competitividad (España)
Format:	comunicación de congreso biblioteca
Language:	English
Published:	2022-07-07
Subjects:	South Iberian margin, Faults and folds, Migration of deformation, Sea-land integration,
Online Access:	http://hdl.handle.net/10261/333542
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