P-T conditions of mantle xenoliths from La Banya del Boc and Puig d’Adri volcanoes (Girona)
| Autor: | Oliveras, V., Galán, Gumer |
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| Jazyk: | Spanish; Castilian |
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Arias Montano. Repositorio Institucional de la Universidad de Huelva instname |
| Popis: | Several thermometers and one barometer are used in order to determine the P-T conditions of type I xenoliths enclosed in alkaline mafic lavas from the Catalan Neogene-Quaternary volcanism. Average temperatures from the different thermometers are similar and higher in harzburgites (1106- 1036º C) than in lherzolites (1043- 867º C), and one pyroxenite shows similar T to harzburgites (1078º C). Low standard deviation for the T estimates reflects equilibrium in most samples for the thermometric reactions. Pressure estimates show high uncertainty, except for few samples, the pyroxenite included, which give consistent values (15.0- 9.6 kbar) within the spinel lherzolite field |
| Databáze: | OpenAIRE |
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