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handle: 10261/29372
[EN] In the Central sector of the Subbetic, there are a belt of structures, folds and thrust faults, with a NE-SW to N-S orientation and another one, with lesser importance, with a NW-SE to N-S strike. These directions are clearly oblique to the ENE-WSW trend, the more common for these type of structures in the Subbetic. These belts were formed from the Middle to the Late Miocene within a compressional field which direction changed from WNW-ESE to NW-SE and NNW-SSE. In the same context was formed, during the Late Miocene, the Prebetic arc of Cazorla, bounded to the southwest by the Tiscar fault, a transfer fault, facilitating the west/northwestwards displacement of its southwest side, formed mainly by Subbetic units. These Subbetic oblique structures are situated between the Gibraltar and the Cazorla arcs and, although are much lesser important, were formed within the same scheme of progressive deformations occurred in the Betic Cordillera from the Late Burdigalian.
[ES] En el sector central del Subbético existe una banda de estructuras, pliegues y fallas inversas, de dirección NE-SO a N-S y otra de dirección NO-SE a N-S, menos marcada que la anterior. Estas direcciones son netamente oblícuas a la más común del Subbético que es ENE-OSO. Estas bandas se han formado del Mioceno medio al superior en un campo de esfuerzos cuya dirección de compresión principal cambió del ONO-ESE a NO-SE y NNO-SSE. En este mismo contexto se formó en el Mioceno superior el arco prebético de Cazorla, limitado al suroeste por la falla de Tíscar que es una falla de transferencia que facilitó que el bloque sudoccidental, formado en buena medida por materiales subbéticos, avanzara más hacia el oeste-noroeste. Estas estructuras, se sitúan entre el arco de Gibraltar y el de Cazorla y, si bien son mucho menos importantes, responden al mismo esquema de deformaciones progresivas ocurridas en la Cordillera Bética desde el Burdigaliense superior.
Este trabajo se ha realizado en el marco del Grupo de Investigación nº 217 de la Junta de Andalucía.
8 páginas, 5 figuras.
Peer reviewed
Prebetic, Betic Cordillera, Prebético, Cordillera Bética, Tectonic arcs, Arcos tectónicos, Subbético, Tíscar fault, Subbetic, Falla de Tíscar
Prebetic, Betic Cordillera, Prebético, Cordillera Bética, Tectonic arcs, Arcos tectónicos, Subbético, Tíscar fault, Subbetic, Falla de Tíscar
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