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 Olmos, Javier 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. These units are correlated with other ones of equal regional scale and well known age in the Duero Basin. PB Sociedad Geológica de España SN 0213-683X YR 2005 FD 2005 LK https://hdl.handle.net/20.500.14352/120287 UL https://hdl.handle.net/20.500.14352/120287 LA spa NO Montes Santiago, M. et al. (2005) «Unidades litoestratigráficas del Terciario del sector de Sepúlveda-Ayllón. Borde suroriental de la Cuenca del Duero», Geogaceta, 38, pp. 75-78. NO 38ª Sesión Científica, Teruel, 2005. DS Docta Complutense RD 26 feb 2026