Protolithic age and time of metamorphism of amphibolites from Slasten lithotectonic unit (Southern Pirin Mountains)
The investigated amphibolites from the Slasten lithotectonic unit are found as a strongly elongated body trending north-south at the eastern slope of the Pirin Mountain, near the village of Ilinden. These rocks are hosted by biotite and biotite-amphibole gneisses, some partially migmatized and containing thin intercalations of marble. The mineral composition is amphibole, plagioclase, epidote, quartz, garnet, pyroxene, titanite, and calcite. P-T conditions of metamorphism are in the range 691–724°C and 0.74–0.86 GPa. LA-ICP-MS analyses of zircons yield a Middle Triassic (246.4±3.2 Ma) age of formation of these amphibolites.
Authors
- Philip Machev
- Lyubomirka Macheva
- Irena Peytcheva (ORCID: https://orcid.org/0000-0003-1130-0861)
- М. В. Стифеева (ORCID: https://orcid.org/0000-0003-0529-6499)
- Е. Б. Сальникова
- Julia Plotkina
Publication Details
- Journal
- Review of the Bulgarian Geological Society
- Published
- 2024-11-01
- DOI
- https://doi.org/10.52215/rev.bgs.2024.85.2.183
- Primary Topic
- Geological Formations and Processes Exploration
- Type
- article
- Field-Weighted Citation Impact
- 0.00