Timun-Gneiskomplex

Torna a falda della Suretta

Rappresentazione e statuto

Colore CMYK
(0%,16%,16%,2%)
Colore RGB
R: 250 G: 210 B: 210
Rango
Gruppo litostratigrafico
Uso
Unità in uso.
Status
termine informale

Nomenclatura

Deutsch
Timun-Gneiskomplex
Français
Complexe gneissique du (Piz) Timun
Italiano
Complesso gneissico del (Piz) Timun
English
Timun Gneiss Complex
Origine del nome

Piz Timun (GR)

Varianti storiche

Timunmasse (Wilhelm 1929, 1933), Timun-Stellamasse (Zurflüh 1961), Timun complex (Milnes & Schmutz 1978), Complesso Stella-Timun (Sciesa 1991), gneiss de Timun (Mayerat Demarne 1994 p.19)

Nota sul nome

Blanc 1965

Gerarchia e successione

Unità di rango inferiore

Paleogeografia e tettonica

Termini generici
Tipo di origine
  • sedimentaria
Metamorfismo
policiclico
Facies metamorfica
  • facies anfibolitica
  • metamorfismo debole

Referenze

Revisione
Milnes Alan G., Schmutz Hans-Ulrich (1978) : Structure and history of the Suretta nappe (Pennine zone, Central Alps): a field study. Eclogae geol. Helv. 17/1, 19-33

p.22: Again, parts of this extremely heterogeneous rock complex have been described petrographically in great detail (Zurflüh 1961, Blanc 1965). It is thought to be the country rock into which the Roffna granite-porphyry was originally intruded (see Zurflüh 1961). The complex consists mainly of chlorite-sericite schists and schistose gneisses, with discontinuous augen gneiss and amphibolite intercalations, as well as grey gneiss horizons, very similar to Roffna gneiss, and some more exotic rock types (e.g. the «eclogite» of Val di Lei. Staub 1926, Schärer 1974). In parts of the area, for reasons given below, the contact between the Timun complex and the Roffna gneiss cannot be defined unambiguously. Although the Alpine metamorphism was low grade over the whole area, and most rocks are completely retrograded, remnants of the original, probably Caledonian, amphibolite facies metamorphism of this basement complex have been described recently (Wenk 1974).

  • Val-di-Lei-Eklogit

    Rango
    unità litostratigrafia
    Statuto
    termine locale (informale)
    Nomenclatorial Remarks
    eclogite» of Val di Lei. Staub 1926, Schärer 1974
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