Gneiss oeillé des Lacerandes
Representation and status
- Color CMYK
- (0%,30%,30%,2%)
- Color RGB
- R: 250 G: 175 B: 175
- Rank
- lithostratigraphic unit
- Validity
- Unit is in Use
- Status
- informal term
Nomenclature
- Deutsch
- Lacerandes-Augengneis
- Français
- Gneiss oeillé des Lacerandes
- Italiano
- Gneiss occhiadino delle Lacerandes
- English
- Lacerandes Augengneiss
- Origin of the Name
- Historical Variants
- zone des gneiss oeillés (Oulianoff in: Lugeon et al. 1942), gneiss oeillé de Liddes-Lacerandes (Thélin & Ayrton 1983), gneiss oeillés de Liddes-Lacerandes (Desmons & Ploquin 1989), Les Lacerandes augengneiss (Bergomi et al. 2017)
Description
- Description
- issu de la recristallisation en profondeur de schistes (blastes à inclusions)
Age
- Age at top
-
- Late Ordovician
- Age at base
-
- Middle Ordovician
- Dating Method
- Inherited cores of Cryogenian (687 +/-18.5 to 829.3 +/-10.6 Ma) and Ediacaran (567.8 +/-4.1 to 605.3 +/-8.8 Ma) ages ; magmatic overgrowth of 456.4 +/-2.4 Ma (Bergomi et al. 2017)