Malor-Member

Rappresentazione e statuto

Colore CMYK
(0%,8%,51%,4%)
Colore RGB
R: 245 G: 225 B: 120
Rango
Membro litostratigrafico (Sotto-formazione)
Uso
Unità in uso.
Status
termine formale valido

Nomenclatura

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

Malorrus = Ahornenrus (GL)

Varianti storiche

Malorschichten (Frey 1965), Malor Member (Menkveld-Gfeller et al. 2016)

Descrizione

Descrizione

Das Malor-Member besteht aus plattigen Mergeln mit eingeschalteten, feinen Sandstein- und Glimmersandsteinlagen. In den Sandsteinen können lokal Graduierung und Parallellamination beobachtet werden. Die Matrix ist kalkig, kann aber lokal auch silifiziert sein. In den obersten Lagen des Members treten Fragmente von karbonatisierten Andesiten auf.

Potenza
Wenige Zentimeter bis 15-25 m (Frey 1965), 30-40 m (Menkveld-Gfeller et al. 2016).

Gerarchia e successione

Unità sovrastante
Limite superiore

Ahornen-Member

Limite inferiore

Globigerinenschiefern = Stad-Formation

Età

Geomorfologia
  • Priaboniano
Età alla base
  • Priaboniano
Metodo di datazione

Biostratigraphie: Grossforaminiferen

Geografia

Estensione geografica
Zentral- und Ostschweiz (Klausenpass bis Linthtal).
Località-tipo
  • Ahornenrus = Malorrus (GL)
    Caratteristiche del sito
    • typische Fazies
    Agibilità del sito
    • Grat
    Coordinate
    • (2716150 / 1192700)
    Nota
    • Frey 1965, Menkveld-Gfeller et al. 2016

Paleogeografia e tettonica

  • Paleogene del Elvetico
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.188: The Malor Member was described by Frey (1965; ‘‘Malor-Schichten’’) at its type locality Ahornenrus [today Malorrus] (2716.150/1192.700).

Lithology: The Malor Member emanates from the Stad Formation by inserting fine-grained sandstone- and micaceous sandstone layers. Also, sandy limestone beds repeatedly occur in alternation with slaty marlstone.

Gradation and parallel lamination can be seen locally in the sandstones. The matrix is calcareous but can also be siliceous locally (oily gloss). In the highest layers, scattered fragments of carbonated andesite occur. The entire thickness is approx. 30–40 m. Overyling strata: Ahornen Member; underlying strata: Stad Formation. Biostratigraphy: Priabonian, Larger foraminifera. Current geographical extent: Central and Eastern Switzerland: Klausenpass to Linth valley. Tectonic units: Central and Eastern Switzerland: Lower Helvetic.

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