RT Journal Article T1 Unidades litoestratigráficas del Terciario del sector de Sepúlveda-Ayllón. Borde suroriental de la Cuenca del Duero T1 Lithostratigraphic Tertiary units of Sepúlveda-Ayllón area. Southeast border of Duero Basin A1 López Olmedo, F. A1 Montes Santiago, M. J. A1 Nozal, F. A1 Luengo, J. AB Six new Tertiary lithostratigraphic units, each one corresponding to a separate stratigraphic sequence,have been recognized in the southeast border of the Duero Basin (north of the Somosierra - Ayllón Sierra).The age of these units is Paleogene-Late Miocene (Turolian) to Pliocene. The lower units are synorogenic,consequence of the tectonic uplift on the Central System while the upper units are postorogenic. Theseunits are correlated with other ones of equal regional scale and well known age in the Duero Basin PB Sociedad Geológica de España YR 2005 FD 2005 LK http://hdl.handle.net/10272/8762 UL http://hdl.handle.net/10272/8762 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 1 jun 2026