Petrogenesis of the Paleozoic magmatic rocks of the Carnian Alps

S. Sinigoi*, C. Beltrame, M. Coltorti, F. Princivalle, L. Secco

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

On the basis of whole-rock and mineral chemistry two main magmatic groups can be established for the Paleozoic Volcanism of the Carnian Alps. High-Ti Volcanics (HTV) and Low-Ti Volcanics (LTV). Spilitization processes have not masked the primary magmatic character. The two groups are characterized by very different trace element patterns and cannot be correlated by a fractionation process. The HTV require an enriched mantle source whereas the geochemistry of the LTV indicates strong crustal contamination. Both magmatic groups are consistent with a major rifting episode. The contamination via assimilation of crustal rocks of the LTV group implies that rifting developed in a continental area.

Original languageEnglish
Pages (from-to)263-276
Number of pages14
JournalMineralogy and Petrology
Volume38
Issue number4
DOIs
Publication statusPublished - Jul 1988
Externally publishedYes

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