Resumen de Caracterización del relleno sedimentario de la Galería del Osario (cueva de el Sidrón, Asturias, España)
Sergio Sánchez Moral, Juan Carlos Cañaveras Jiménez, Javier Lario, S. Cuezva, Pablo G. Silva Barroso, Marco de la Rasilla Vives, Francisco Javier Fortea Pérez
Stratigraphic and sedimentological works show that the Osario Gallery in El Sidron Cave has a complex sedimentary infill. Bones and artefacts are present throughout an unsorted and unbedded unit which consists of a mixture of gravel-sized limestone fragments with silty loam filling the spaces among the clasts. This unit represents a high energy phase interpreted as debris flow deposit related to the collapse of an upper level or gallery and/or recording a big storm event. Textural and geochemical features of sediments probably reflect a reorganization in the hydrodynamic behaviour of the gallery as response to the emplacement of collapse-derived sediments and/or a lowering of the piezometric level in the cave (due to a change in the external base level).
