Sogn-Placi-Gneiskomplex

Representation and status

Index

G-S

Color CMYK

(0%,18%,27%,14%)

Color RGB

R: 220 G: 180 B: 160

Rank

lithostratigraphic Formation

Validity

Unit is in Use

Status

informal term

Nomenclature

Deutsch

Sogn-Placi-Gneiskomplex

Français

Complexe gneissique de Sogn Placi

Italiano

Complesso gneissico di Sogn Placi

English

Sogn Placi Gneiss Complex

Origin of the Name

Val Sogn Placi (GR)

Historical Variants

Sogn Placi Gneiss Complex (Berger et al. 2017)

Age

Age at top

• Middle Paleozoic

Age at base

• Proterozoic

Geography

Geographical extent

Dünnes Band am östlichen Ende der Ausserberg-Avat-Zone. Tritt auch als Lagen innerhalb des Massa-Gneiskomplexes.

References

Definition

Berger Alfons, Mercolli Ivan, Herwegh Marco, Gnos Edwin (2017) : Geological Map of the Aar Massif, Tavetsch and Gotthard Nappes. Geological Special Map 1:100'000, Explanatory Notes 129

p.25: Meta-arkose and metapsammite grading locally into schist, two-mica gneiss and phyllite constitute the Sogn Placi Gneiss Complex. These rocks form a band with a thickness of a few hundred metres at the eastern end of the Ausserberg-Avat Zone. Layers of similar metasedimentary gneiss occur in the migmatitic gneiss of the Massa Gneiss Complex but are too thin to be shown on the present map scale.