Brunni-Granit
Back to Fruttstock-Gruppe (mittelvariszische Intrusiva)Representation and status
- Index
- gamma-Br
- Color CMYK
- (0%,51%,49%,16%)
- Color RGB
- R: 215 G: 105 B: 110
- Rank
- lithostratigraphic Formation
- Validity
- Unit is in Use
- Status
- informal term
Nomenclature
- Deutsch
- Brunni-Granit
- Français
- Granite de la Brunni
- Italiano
- Granito della Brunni
- English
- Brunni Granite
- Origin of the Name
-
Alp Brunni (UR) bei Silenen am Brunnital
- Historical Variants
-
Brunni-Granit (Gnos 1988, Labhart & Renner 2012, Gisler 2018), Brunni Granite (Berger et al. 2017)
Hierarchy and sequence
- Superordinate unit
Age
- Age at top
-
- Middle Pennsylvanian
- Age at base
-
- Middle Pennsylvanian
Palaenography and tectonic
- Tectonic unit (resp. main category)
- Kind of protolith
-
- plutonic
- Metamorphism
- monocyclic
References
- Definition
-
(2017) :
Geological Map of the Aar Massif, Tavetsch and Gotthard Nappes. Geological Special Map 1:100'000, Explanatory Notes 129
p.41: The Brunni Granite is a homogeneous leucocratic granite with characteristic large crystals of allanite/epidote and locally K-feldspar megacrysts. It is affected by a weak foliation of Alpine age, which becomes more intense towards the south (SCHALTEGGER et al.1991). It forms an intrusive complex together with the Düssi Diorite (δD) showing abundant magma mixing and mingling structures (GNOS 1988, RIESEN 1991).