Miguel Ángel López Horgue, Arantza Aranburu Artano, Pedro Angel Fernández Mendiola, Joaquín García Mondéjar
An angular unconformity in the Upper Albian siliciclastic series of Karrantza (Bizkaia), northern Spain, is highlighted. The unconformity occurs at the inflatum/dispar ammonite Zones boundary. Tidal channel sandstones and mudstones are overlain by tidal sheet sandstones and conglomeratic sandstones. This episode is correlated with coeval tectonic expressions: compression, diapir extrusion, block tilting, forced regressions and overall erosion along the Basque-Cantabrian Basin.
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