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Compositional and taphonomic gradients show fluctuating depositional conditions on Middle Jurassic brachiopod-rich accumulations from Northern Calcareous Alps (Austria–Germany) García Joral, Fernando Baeza Carratalá, José Francisco Giannetti,Alice 564.8“6152”(430) 551.762.2(430) Brachiopods Western Tethys Taphofacies Jurassic Northern Calcareous Alps Depositional events Paleontología Geología estratigráfica 2416.02 Paleontología de Los Invertebrados 2506.19 Estratigrafía Brachiopod-rich accumulations of the well-known ‘VilserKalk’ calcareous units from the Middle Jurassic of Zehrer (Allgäuer Alps) have been recognised and analysed from a taphonomic standpoint. These brachiopod concentrations are frequent in the Jurassic deposits of various Alpine-Mediterranean localities, usually related to resedimentation processes generated by high-hydrodynamic episodes. In the four brachiopod-bearing accumulations recorded, high concentrations of mainly articulate shells are preserved in pocket-like deposits made up of brachiopod communities with quite different structure, size-frequency distribution, diversity and taxonomic composition. The analysed taphocharacters indicate different hydrodynamic regimes of diverse intensity for each accumulation, resulting in a gradation of the resedimentation processes. The inferred transport of the shells from the source area is minimal, the bioclastic levels constituting para-autochthonous assemblages without significant spatial averaging. The four defined taphofacies include different assemblages that chronostratigraphycally span the latest Toarcian-early Bajocian interval. These taphofacies are interpreted in terms of depth-related variations concurring with environmental disturbance events in several phases of the evolutionary history of the basin, progressively ranging from shallower proximal accumulations to shell-beds originated in more distal depositional environments. Alexander von Humboldt Foundation Universidad Complutense de Madrid Universidad de Alicante Depto. de Geodinámica, Estratigrafía y Paleontología Fac. de Ciencias Geológicas TRUE pub 2024-09-09T14:11:49Z 2024-09-09T14:11:49Z 2023-06-15 journal article VoR https://hdl.handle.net/20.500.14352/108025 0891-2963 10.1080/08912963.2023.2221274 1029-2381 eng Research Groups PBM-910431 VIGROB-167 IGCP- 710 PID2019-104625RB-I00 García Joral, F., Baeza-Carratalá, J. F., & Giannetti, A. (2023). Compositional and taphonomic gradients show fluctuating depositional conditions on Middle Jurassic brachiopod-rich accumulations from Northern Calcareous Alps (Austria–Germany). Historical Biology, 36(8), 1570–1582. https://doi.org/10.1080/08912963.2023.2221274 restricted access application/pdf Taylor and Francis