Geochemistry and isotopic data of the granitic rocks from Castelo Branco pluton (Central Portugal)

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

http://hdl.handle.net/10400.11/755

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Authors

Antunes, I.M.H.R.

Neiva, A.M.R.

Silva, M.M.V.G.

Abstract(s)

The Castelo Branco pluton is exposed over an area of 390 Km2 and consists of five late- to post-tectonic Hercynian granitic rocks, which intruded the Cambrian schist-metagraywacke complex. They are concentrically arranged. A medium- to fine-grained muscovite>biotite granite (G1) crops out in the pluton’s core and is surrounded by a medium- to fine-grained, slightly porphyritic biotite>muscovite granodiorite (G2), encircled by a medium- to coarse-grained porphyritic biotite>muscovite granodiorite (G3), grading into a medium- to coarse-grained porphyritic biotite = muscovite granite (G4). A coarse-grained muscovite>biotite granite (G5) forms only external parts of the pluton in the N and NE.

Keywords

Pluton Geochemistry Isotopic data

URI

http://hdl.handle.net/10400.11/755

Citation

ANTUNES, I.M.H.R. ; NEIVA, A.M.R. ; SILVA, M.M.V.G. (2005) - Geochemistry and isotopic data of the granitic rocks from Castelo Branco pluton (Central Portugal). In International Symposium on Applied Isotope Geochemistry, 6, Prague, 11-16 September - Abstracts. p. 6-7. Comunicação.