RT Journal Article T1 Icnofósiles, sedimentación episódica/ tempestitas fangosas y «black shales» de ambientes seudoanóxicos, en sucesiones marinas de plataforma y rampa T1 Ichnofossils, episodic events, mud tempestites and pseudoanoxic black shales in marine shelf and ramp successions A1 García Ramos, José Carlos A1 Suárez de Centi, C. A1 Valenzuela, M. AB Déposition of blade shale fades on marine shelves and ramps has been habitually attributed to several causes related to oxygen-depleted bottom waters: sea level fluctuations, very slow water circulation, high organic productivity in the surface water; etc. This paper concerns to black shale deposits quickly accumulated on a w e ll oxygenated bottom, devoid o f bioturbation, and related to mud-rich storm events PB Sociedad Geológica de España YR 1992 FD 1992 LK http://hdl.handle.net/10272/16342 UL http://hdl.handle.net/10272/16342 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026