Aplicaciones geotermobarométricas de los contenidos en elementos trazas de minerales granulíticos: Zr en rutilo y HREE en granate de los xenolitos félsicos de la corteza inferior del Sistema Central Español

Abstract

Geothermobarometric estimations based on the trace element concentration of minerals from lower crustal
peraluminous felsic granulite xenoliths from the Spanish Central System (SCS) have been performed. Zr in
rutile thermometry (Zack et al., 2004) gives a main range of 970 to 1100 ºC whereas HREE in garnet
barometry (Bea et al., 1997) yields a pressure range of 7.2 to 9.3 kbar. These new thermobarometric data
overlap previous P-T estimates based on conventional metamorphic phase equilibria. Nevertheless, the
slightly higher temperature range obtained with rutile thermometry force to future revision of granulite
mineral equilibria of the SCS lower crustal xenoliths.