Fuggstock-Member

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Rappresentazione e statuto

Colore CMYK
(0%,50%,63%,22%)
Colore RGB
R: 200 G: 100 B: 75
Rango
Membro litostratigrafico (Sotto-formazione)
Uso
Unità in uso.
Status
termine informale

Nomenclatura

Deutsch
Fuggstock-Member
Français
Membre du Fuggstock
Italiano
Membro del Fuggstock
English
Fuggstock Member
Origine del nome

Fuggstock = Fuggenstock (GL), südöstlichen Vorgipfel des Gulderstockes

Varianti storiche
Fuggstock-Sernifit (Fisch 1961, Huber 1964, Ryf 1964, Rutsch et al. 1966), Fuggstock Sernifite (Letsch et al. 2015), Fuggstock-Formation
Nota sul nome
Sernifite supérieur (Huber 1964)

Descrizione

Descrizione
WL Sst und Ton-/Siltssteine, mit Tuffen, Tuffiten & Spilitlagen, Basis konglomeratisch
Potenza
max. ca. 460 m an der Typlokalität

Gerarchia e successione

Limite superiore
gradual upward fining

Età

Geomorfologia
  • Cisuraliano (= Primo Permiano)
Età alla base
  • Cisuraliano (= Primo Permiano)

Geografia

Estensione geografica
von Widersteinerloch im Nordwesten bis in den Westhang des Wissgandstöckli im Osten

Paleogeografia e tettonica

  • Verrucano
Termini generici
Tipo di origine
  • sedimentaria
Condizioni di formazione
thinning towards the NE (contrary to the Üblital Sernifite)

Referenze

Revisione
Letsch Dominik, Winkler Wilfried, von Quadt Albrecht, Gallhofer Daniela (2015) : The volcano-sedimentary evolution of a post-variscan intramontane basin in the Swiss Alps (Glarus Verrucano) as revealed by zircon U-Pb age dating and Hf isotope geochemistry. International Journal of Earth Sciences (Geologische Rundschau) 104, 123–145

p.133: In the latter area [NE of the Sernftal], the Mären Formation passes gradually into a finer-grained, brownish-red or locally purple Sernifite. Contrary to the Üblital Formation, this Sernifite body thins towards the NE and was thus most probably shed from the SW, i.e. the area of the present-day Freiberg (Fisch 1961; Ryf 1965). It contains only little spilitic detritus (Ryf 1965) but very much, often well-rounded, quartz grains (up to 50% of all components). The rest is composed of feldspar and mica with the former often exhibiting in thin section irregular patches and spots where the feldspar has been replaced by calcite and sericite. (...) The Fuggstock Sernifite is very rich in heavy minerals, particularly zircon, especially in comparison with the zircon-poor Üblital Formation.
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