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Stratigraphic and tectonic evolution of the western Alboran Sea: Late miocene to recent
Authors:A C Campillo  A Maldonado  A Mauffret
Institution:(1) Instituto de Ciencias del Mar, CSIC, Paseo Nacional s/n, 08039 Barcelona, Spain;(2) Département de Géodynamique, Tectonique et Environment/CNRS, Université Pierre et Marie Curie, 75252 Paris Cedex 05, France
Abstract:The western Alboran Sea contains three morphostructural domains: continental margins, structural highs, and basins, some with diapirs. Seven sequences from Tortonian to upper Quaternary, identified on airgun profiles, record a distinct set of depositional events. The tectonic evolution was influenced by the relative movement of the African and Iberian plates. Connections through the Atlantic/Mediterranean gateways and global sea level oscillations are recorded as major unconformities in the depositional record. A Neogene change in tectonic character from transtensional to transpressional regimes is postulated on the basis of changes in the regional stress field orientation.
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