RT Journal Article T1 El sílex de tipo “Urbasa”. Caracterización petrológica y geoquímica de un marcador litológico en yacimientos arqueológicos del Suroeste europeo durante el Pleistoceno superior y Holoceno inicial T1 The “Urbasa” type flint. Main petrological and geochemical features of a litologhic marker in late Pleistocene andearliest Holocene archaeological sites A1 Tarriño, A. A1 Olivares, M. A1 Etxebarria, N. A1 Baceta, Juan Ignacio A1 Larrasoaña, J. C. A1 Yusta, Iñaki A1 Pizarro, José Luis A1 Cava, A. A1 Barandiarán, I. A1 Murelaga, Xabier AB The “Urbasa” flint, which occurs intercalated within shallow-water limestones of Thanetian (upper Paleocene)age was one of the best and most used flint sources during the Prehistoric times in the Basque-Cantabrianarea. Two of the main outcrops/quarries where the “Urbasa” flint was exploited are located in the Urbasaridge (W Navarra). The analysis of the compositional texture, mineralogy and geochemical features hasrevealed that the “Urbasa” flint is highly pure and of fine-grained texture, but with high contents of moganite,traces of organic matter and, less frequently, carbonates and clay YR 2007 FD 2007 LK http://hdl.handle.net/10272/8355 UL http://hdl.handle.net/10272/8355 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 31 may 2026