RT Journal Article T1 La discordancia de Moyuela (Zaragoza): precisiones sobre la tectónica extensional en el límite Oxfordiense-Kimmeridgiense en la Cuenca Ibérica T1 The angular unconformity of Moyuela (Zaragoza): remarks on extensional tectonic events at the Oxfordian-Kimmeridgian boundary in the Iberian basin A1 Aurell, Marc A1 Pérez Urresti, I. A1 Ramajo Cordero, Javier A1 Meléndez Hevia, Guillermo A1 Bádenas, Beatriz AB An angular unconformity has been found at the lower part of the Sot de Chera Fm. near the village of Moyuela (Northern Iberian Chain, NE Spain). This unconformity develops during a tectonic extension at the turn of the Oxfordian-Kimmeridgian stages. Biostratigraphic and taphonomic analyses of the ammonite succession reveal a small statigraphic gap at the top of the Yatova Fm,, partly affecting the Bimammatum and Hauffianum Subzones. The lower part of the overlying Sot de Chera Fm. has been accurately dated as Galar Subzone by the common ocurrence of Sutnerla galar (OPPEL). This provides a precise dating of the tilting phase responsible for the observed angular unconformity. The unconformity of Moyuela confirms previous interpretations about the regional extension of a tectonic event which involved tilting of blocks during the deposition of the Sotde Chera marly Fm. and would give further support to setting the Oxfordian-Kimmeridgian boundary below the Plan u la Zone, at the base of Hauffianum Subzone PB Sociedad Geológica de España YR 1997 FD 1997 LK http://hdl.handle.net/10272/10580 UL http://hdl.handle.net/10272/10580 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 1 jun 2026