Grindelwald-Marmor

Torna a Elvetico occidentale

Rappresentazione e statuto

Colore CMYK
(0%,56%,81%,6%)
Colore RGB
R: 240 G: 105 B: 45
Rango
unità litostratigrafia
Uso
Unità in uso.
Status
termine locale (informale)

Nomenclatura

Deutsch
Grindelwald-Marmor
Français
Marbre de Grindelwald
Italiano
Marmo di Grindelwald
English
Grindelwald Marble
Varianti storiche

Grindelwaldner Marmor (Arbenz 1909, Heim 1919, Arbenz & Müller 1920, Wieland 1976), Breccienmarmor am Unteren Grindelwaldgletscher (Seeber 1911), Grindelwaldnermarmor (de Quervain 1969), Marbre du Grindelwald (Rutsch & Stalder 1970)

Descrizione

Descrizione

Mitteleozäne Brekzienvarietät der marmorisierten Siderolithbildungen mit einer grünen, roten oder violetten Grundmasse. Die Komponenten stammen aus der Quinten-Formation, der Öhrli-Formation und aus den Tschingelkalken (Helvetischer Kieselkalk) und treten in einer sandig-tonigen Matrix auf.

Età

Geomorfologia
  • Eocene medio
Età alla base
  • Eocene medio

Geografia

Estensione geografica
Unteres Tal des Grindelwald-Gletschers.

Paleogeografia e tettonica

  • Siderolitico
Paleogeografia
North Tethyan Shelf (Helv.) :
marge continentale européenne
Termini generici
Tipo di origine
  • sedimentaria
Metamorfismo
non metamorfo

Referenze

Revisione
Menkveld-Gfeller Ursula, Kempf Oliver, Funk Hanspeter (2016) : Lithostratigraphic units of the Helvetic Palaeogene: review, new definition, new classification. Swiss J. Geosc. 109/2, 171-199

p.177: The Grindelwald ‘‘Marble’’ (‘‘Grindelwaldner Marmor’’, Arbenz 1909, Wieland 1976) outcrops in the valley of the lower Grindelwald glacier and is known for its use as building stone for door casings, columns and furniture tops. It is lens-like embedded in the limestone of the Öhrli Formation as colourful breccia. Components of Helvetischer Kieselkalk,Öhrli- and Quinten formations are enclosed by a sandy, dark-green or argillaceous, dark-red to violet matrix.

The Grindelwald ‘‘Marble’’ is considered as a breccia-variety of the Siderolithic Group; the less well known Rosenlaui ‘‘Marble’’ equally corresponds to a breccia-variety of the Siderolithic Group.

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