RT Journal Article T1 Metapelitas de alta presión de la Unidad de Santiago (Complejo de Ordenes, NO del Macizo Ibérico) T1 High - pressure metapelites from the Santiago Unit (Ordenes Complex, NW of the Iberian Massif) A1 Rubio Pascual, F. J. A1 Arenas, R. A1 Díaz García, F. AB A high - pressure - low - to intermediate temperature eo - Hercynian metamorphic event characterizes the tectonothermal evolution of the Santiago Unit, in the western margin of the Ordenes Complex. P-T conditions fo r the mineral assemblages of the high - pressure event (which is essentially preserved as a very thin Si=S1 included in albite porphyroblasts in semipelitic schists) have been estimated at 493 ± 9 °C and 14.7 ± 0.7 kbar (minimum pressure). The development of the high - pressure metamorphism and the lacking of significative reequilibrium of their characteristic mineralogy, suggests that the unit (probably a fragment o f the continental margin of Condwana) has been uplifted inm ediately after undergoing subduction in the beginning of the Hercynian Orogeny PB Sociedad Geológica de España YR 1992 FD 1992 LK http://hdl.handle.net/10272/14137 UL http://hdl.handle.net/10272/14137 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 31 may 2026