Resumen de Texturas superficiales en los granos de cuarzo de las arenas del Plioceno superior de la zona Jerez-Lebrija (SW de España)
José Pedro Moral Cardona, Ángel Sánchez Bellón, Salvador Domínguez Bella, José Manuel Gutiérrez Mas, Francisco de Borja López Aguayo, Manuel Antonio Caballero López-Lendínez
In the Jerez-Lebrija are (SW Spain) there are deposits of Pliocene sands which are exploited in various quarries. The analysis of the surface features presented by the quartz grains from these sands refveals different stages in their evolution of the grains. The first of these stages is recorded in the form of conchoidal fractures and arcuate steps; the second is represented by an assemblage of features comprising isolated Vs, grooves and chattermark trails. In a posterior stage chemical features were developed in relation to tropic climatic conditions.
