Geochemistry and petrogenesis of biotite granodiorite and its microgranulares enclaves from Oledo-Idanha-a-Nova pluton (Central Portugal)

Antunes, I.M.H.R.; Neiva, A.M.R.; Silva, M.M.V.G.

http://hdl.handle.net/10400.11/760

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Authors

Antunes, I.M.H.R.

Neiva, A.M.R.

Silva, M.M.V.G.

Abstract(s)

The lower Ordovician medium-grained biotite of 479-480 Ma predominates in the Oledo-Idanha-a-Nova pluton and is deformed. It contains different biotite tonalitic and biotite granodioritic microgranular enclaves concentrated on the pluton’s west part. Microgranular enclaves and host biotite granodiorite are I-type granitic rocks and contain amphibole, sphene, allanite, ilmenite and magnetite.

Description

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Keywords

Microgranular enclaves Fractional crystallization Magma mixing Deformation Oledo Idanha-a-Nova

URI

http://hdl.handle.net/10400.11/760

Citation

ANTUNES, I.M.H.R. ; NEIVA, A.M.R. ; SILVA, M.M.V.G. (2007) - Geochemistry and petrogenesis of biotite granodiorite and its microgranulares enclaves from Oledo-Idanha-a-Nova pluton (Central Portugal). In Congresso Ibérico de Geoquímica, 6, Vila Real, 16-21 de Julho - Livro de resumos = Abstracts book. Vila Real : UTAD. p. 77. Comunicação.