Goms-Gneiskomplex

Darstellung und Status

Index

G-Go

Farbe CMYK

(0%,16%,16%,2%)

Farbe RGB

R: 250 G: 210 B: 210

Rang

lithostratigraphische Formation

Gebrauch

Element ist in Gebrauch

Status

informeller Begriff

Nomenklatur

Deutsch

Goms-Gneiskomplex

Français

Complexe gneissique de Goms

Italiano

Complesso gneissico di Goms

English

Goms Gneiss Complex

Herkunft des Namens

Goms (VS)

Historische Varianten

Goms Gneiss Complex (Berger et al. 2017)

Hierarchie und Abfolge

Untergeordnete Einheiten

• Unterwassern-Gneis

Alter

Alter Top

• Paläozoikum

Alter Basis

• Präkambrium

Referenzen

Erstdefinition

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.67: Following OBERHOLZER (1955), the two slices of polycyclic gneisses were depicted on the present map but, due to the map scale, these two lithologically distinguished units were grouped into one single unit called the Goms Gneiss Complex. OBERHOLZER (1955) described two-mica plagioclase K-feldspar gneiss, migmatite (“Mischgneise”) and biotite-plagioclase gneiss derived from sedimentary protoliths intercalated with amphibolitic layers and a serpentinite lens. These rock associations are very similar to sequences in the “Streifengneis” Complex, Paradis Gneiss Complex and the Val Nalps Gneiss Complex of the adjacent Ausserbinn-Piz Cavel Zone of the Gotthard Nappe. Noteworthy is a strong alteration of the gneisses in the region of Ernen and an epidote- and chlorite-rich metagranodiorite (“Gneis von Unterwasser”, OBERHOLZER 1955).

Neubearbeitung

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