RT Journal Article T1 Estratigrafía, petrografía y significado paleogeográfico de las radiolaritas jurásicas de tipo austroalpino de la unidad de las Nieves (Formación Parauta, Rondaides, Cordillera Bética Occidental) T1 Stratigraphy, petrography and pajaeogeographical significance of austroalpine-type jurassic radiolarites of the Nieves unit (Parauta Formation, Rondaides, Western Betic Cordillera) A1 Martín Algarra, Agustín A1 Aguado, Roque A1 Gursky, H. J. A1 O´Dogherty, Luis AB The Parauta Radiolarite Formation (Nieves unit, Rondaides) is dated as Middle Bathonian by radiolarians and indirect biostratigraphic criteria. It was deposited in a deep basin, perched and confined in the distal zone of a starved continental palaeomargin, formed after rifting of a Triassic carbonate platform. The Rondaide margin constituted the westernmost end of the Mesozoic terrane from which the Betic Internal Zones are derived, as well as the southeastern border of an oceanic basin that connected the Central Atlantic and the Ligurian-Piemont oceans. The Parauta Radiolarite Formation shows striking similarities with some coeval Austroalpine and Prealpine radiolarites PB Sociedad Geológica de España YR 1997 FD 1997 LK http://hdl.handle.net/10272/10304 UL http://hdl.handle.net/10272/10304 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026