Val-Pigniu-Gneiskomplex

Rappresentazione e statuto

Index

G-Gl

Colore CMYK

(0%,20%,30%,10%)

Colore RGB

R: 230 G: 185 B: 160

Rango

Formazione litostratigrafica

Uso

Unità in uso.

Status

termine informale

Nomenclatura

Deutsch

Val-Pigniu-Gneiskomplex

Français

Complexe gneissique du Val Pigniu

Italiano

Complesso gneissico della Val Pigniu

English

Val Pigniu Gneiss Complex

Origine del nome

Val da Pigniu = Panix (GR)

Varianti storiche

---- (Trümpy 1947), Val Pigniu Gneiss Complex (Berger et al. 2017)

Età

Geomorfologia

• Paleozoico

Età alla base

• Precambriano

Geografia

Estensione geografica

Gebiet zwischen Brigel und Val Pigniu.

Referenze

Definizione

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.61: The Val Pigniu Gneiss Complex (GGl) includes a sliver of metasedimentary gneiss surrounded by Carboniferous–Permian clastic and volcanic rocks of the Glarus Verrucano Group outcropping in an area between Brigels and Val Pigniu. In some places, intrusions of small dioritic bodies within this gneiss complex are observed (WEBER 1924). Locally, stratigraphic contacts indicate that some occurrences of the metasedimentary gneiss could represent the crystalline basement of the Glarus Nappe Complex. In some other outcrops, a possible transition between pre-Variscan metasedimentary gneiss and Permian sedimentary and volcanic rocks is questionable. Due to the scarcity of outcrops in this area, the tectonic position of the Val Pigniu Gneiss Complex cannot completely be attested (see discussion on p. 105 ff.).