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
ISSN: 0213-683X
Year of publication: 2006
Issue: 40
Pages: 99-102
Type: Article
More publications in: Geogaceta
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.