Referência Bibliográfica
Publication_BiblioReference
PEREIRA, I., BENTO DOS SANTOS, T., SOARES, V., COTRIM, B., CASTRO, P. (2023) - A profusão de granitos anatécticos na Zona Centro Ibérica: modelação das condições de fusão. Livro de Resumos do XI Congresso Nacional de Geologia, Coimbra, Portugal, 31-32.
Resumo
PublicationAbstract
In the Central Iberian Zone, the metamorphism during the variscan orogeny evolved from Barrovian
conditions during D1, to anatexis during the late stages of D2 and D3. Migmatites in most anatectic complexes
lack garnet or cordierite, and yield sillimanite and K-feldspar. This generally indicates that peak metamorphic
conditions are not very high, which is at odds with the profusion of S-type granites and diatexites, indicating
excess of 40% melt volumes. We test and evaluate the role of pelite geochemistry and of water-saturated melt
reactions during these anatectic events.