«Jüngere Orthogneise»

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Representation and status

Index
-
CMYK Color
-
RGB color
R: 250 G: 175 B: 180
Rank
lithostratigraphic unit
Validity
Unit is in Use
Status
incorrect name (though informally used)
SCS note
-
SCS date
-
Comment
-

Nomenclature

German
«Jüngere Orthogneise»
French
-
Italian
-
English
«Younger Orthogneisses»
Origin of the Name
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Historical Variants
Junes orthogneiss = association granitique de Flüela (Brugger 1992), younger orthogneisses (Maggetti & Flisch 1993), Younger Orthogneiss (Schaltegger & Gebauer 1999)
Nomenclatorial Remarks
-

Synonyms

Synonyms
Non-synonyms
Possible confusion

Description

Description
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Geomorphology
-
Thickness
-

Components

Lithological content
-
Mineral content
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Fossil content
-

Hierarchy and succession

Units at roof
    -
Units at floor
Lateral equivalents
Upper boundary
-
Lower boundary
-
Stratigraphic discussion
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Age

Age at top
Late Ordovician
Note about top
-
Age at base
Late Ordovician
Note about base
-
Dating method
451 +/-2 Ma (Rb/Sr-Isochron: Flisch 1987, Maggetti & Flisch 1993), 460-420 Ma (Poller et al. 1997a/b)

Geography

Geographical extent
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Type area
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Type locality
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Type profile
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Reference profiles
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Point of interest
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Paleogeography and tectonic

Paleogeography
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Kind of protolith
  • volcanic
  • plutonic
Conditions of formation
-
Sequence
-
Tectonic Unit (resp. main category)
Silvretta
  • S-chanf :
    inkl. Suvsilvrettide Linsen
Metamorphism
polycyclic
Metamorphic facies
-
Note on metamorphism
-

References

Definition
-
Revision
-
Important publications
  • Liebetrau Volker (1996): Petrographie, Geochemie und Datierung der "Flüelagranitischen Assoziation" (sog. Jüngere Orthogneise) des Silvrettakristallins, Graubünden - Schweiz. , Inauguraldissertation Univ. Freiburg, 233 Seiten

Material and varia

Applications
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  • Flüela-Augengneis Show details

    Origin of the Name

    Flüela Weisshorn (GR) (bzw. Flüelapass)

    Rank
    lithostratigraphic Formation
    Status
    informal term
    Valid name
    In Short
    Heller, grobaugiger, flaseriger, Zweiglimmer-Alkalifeldspatgneis. Oft mit fein- bis mittelkörnigen Muskovit-Alkalifeldspatgneisen verknüpft.
    Age
    Late Ordovician - Late Ordovician
    Thickness
    -
    Geographical extent
    -
    Type area
    -
    Comment
    -
  • Tschuggen-Augengneis Show details

    Origin of the Name

    Tschuggen (GR) an der Flüelastrasse

    Rank
    lithostratigraphic Formation
    Status
    informal term
    Valid name
    In Short
    Dunkler, biotitreicher «Jüngerer Orthogneis» der Silvretta-Decke, mit einzelne kleinere und loser verteilte Kalifeldspataugen.
    Age
    Ordovician - Ordovician
    Thickness
    -
    Geographical extent
    -
    Type area
    -
    Comment
    -
  • Frauenkirch-Augengneis Show details

    Origin of the Name

    Frauenkirch (GR), SW Davos

    Rank
    lithostratigraphic unit
    Status
    local name (informal)
    Valid name
    In Short
    Aplitisch-pegmatitischer «Jüngerer Orthogneis» der Silvretta-Decke (Fe-karbonathaltige Variante des Typs Flüela).
    Age
    Ordovician - Ordovician
    Thickness
    -
    Geographical extent
    -
    Type area
    -
    Comment
    Als hochdifferenzierte Entwicklung des Flüela-Granites interpretiert (Maggetti & Flisch 1993).
  • Fuorcla-Gneis Show details

    Origin of the Name
    -
    Rank
    lithostratigraphic unit
    Status
    -
    Valid name
    In Short
    -
    Age
    -
    Thickness
    -
    Geographical extent
    -
    Type area
    -
    Comment
    -
  • Urezzas-Augengneis Show details

    Origin of the Name

    Piz Urezzas (GR)

    Rank
    lithostratigraphic unit
    Status
    local name (informal)
    Valid name
    In Short
    -
    Age
    -
    Thickness
    -
    Geographical extent
    -
    Type area
    -
    Comment
    -
  • Radönt-Augengneis Show details

    Origin of the Name

    Piz Radönt (GR), SSW Flüelapass

    Rank
    lithostratigraphic unit
    Status
    local name (informal)
    Valid name
    In Short
    Glimmerreicher (Biotit und Muskovit) Augengneis der Silvretta-Decke.
    Age
    Late Ordovician - Late Ordovician
    Thickness
    -
    Geographical extent
    -
    Type area
    -
    Comment
    -
  • Güstizia-Muskovitgneis Show details

    Origin of the Name

    God da la Güstizia (GR), N Zernez

    Rank
    lithostratigraphic Formation
    Status
    informal term
    Valid name
    In Short
    Heller, mittelkörniger bis grobflaseriger, hellglimmerreicher «Jüngerer Orthogneis» der Silvretta-Decke.
    Age
    Ordovician - Ordovician
    Thickness
    -
    Geographical extent
    -
    Type area
    -
    Comment
    Am Südrand der Silvretta enthält der Güstizia-Augengneis alpin gebildeten Stilpnomelan (Grauert 1969).
  • Macun-Zweiglimmergneis Show details

    Origin of the Name

    Macun (GR)

    Rank
    lithostratigraphic unit
    Status
    local name (informal)
    Valid name
    In Short
    Fein- bis mittelkörniger Muskovit-Alkalifedspatgneis der Silvretta-Decke.
    Age
    -
    Thickness
    -
    Geographical extent
    -
    Type area
    -
    Comment
    -