Plagioklasgranit der Silvretta-Decke
Back to SilvrettaRepresentation and status
- Color CMYK
- (0%,0%,0%,100%)
- Rank
- lithostratigraphic unit
- Validity
- Unit is in Use
- Status
- informal term
Nomenclature
- Deutsch
- Plagioklasgranit der Silvretta-Decke
- Français
- Granite à plagioclase de la nappe de la Silvretta
- Italiano
- Granito a plagioclase della falda delle Silvretta
- English
- Plagioclase granite of the Silvretta nappe
- Historical Variants
-
Silvretta garnet-hornblende-plagioclase orthogneisses = Grt-Hbl-Pl Gneisses (Müller et al. 1996), plagiogranite from the Silvretta nappe (Schaltegger et al. 2002)
Description
- Description
-
60% unzonierter Plagioklas, 20-25% Hornblende, 15% Quarz, bis 5% Granat, Epidot (sowie bis 1% Zirkon!) (Müller et al. 1996)
Age
- Age at top
-
- Early Cambrian
- Age at base
-
- Neoproterozoic (= Late Proterozoic)
- Dating Method
-
532 +/-30 Ma (Müller et al. 1996)
Geography
- Type area
- Oberes Val Sarsura (GR)
Palaenography and tectonic
- Tectonic unit (resp. main category)
- Kind of protolith
-
- plutonic
- Conditions of formation
-
protolith = oceanic plagiogranite (Müller et al. 1996)
- Metamorphism
- polycyclic