Alp-Cavradi-Gneiskomplex

Rappresentazione e statuto

Index

P-C

Colore CMYK

(12%,0%,15%,35%)

Colore RGB

R: 145 G: 165 B: 140

Rango

Formazione litostratigrafica

Uso

Unità in uso.

Status

termine informale

Nomenclatura

Deutsch

Alp-Cavradi-Gneiskomplex

Français

Complexe gneissique de l'Alp Cavradi

Italiano

Complesso gneissico dell'Alp Cavradi

English

Alp Cavradi Gneiss Complex

Origine del nome

Alp Cavradi (GR), Tujetsch

Varianti storiche

Paragneis am Nordrand des Gotthard-Massivs (Niggli 1944), Paragneis mit lokalen Schiefer- und Phylliteinschaltungen am Nordrand der Gotthard-Decke (Vögeli et al. 2013), Alp Cavradi Gneiss Complex (Berger et al. 2017)

Età

Geomorfologia

• Paleozoico

Età alla base

• Paleozoico

Geografia

Estensione geografica

Nordrand des Gotthardgebirgmassivs.

Paleogeografia e tettonica

Termini generici

• Gotthard

Tipo di origine

• sedimentaria

Metamorfismo

policiclico (alpino e varisico)

Facies metamorfica

• facies a scisti verdi
• facies anfibolitica

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.71: The Alp Cavradi Gneiss Complex corresponds to the “Paragneis am Nordrand des Gotthard-Massivs” of NIGGLI (1944) with sericite-biotite gneiss as the dominant lithology. Layers of phyllite, quartzite and graphitic schist are intercalated with the gneiss. NIGGLI (1944) indicated an age between the emplacement of the Ordovician “Streifengneis” and the Permian Medel Granite/Cristallina Granodiorite for the protoliths of these metasedimentary rocks. In contrast, AMBÜHL (1929) interpreted the sericite-biotite gneiss as a surface alteration of the metasedimentary rocks at the contact with Carboniferous–Permian sedimentary rocks.