Membre de Langy
Rappresentazione e statuto
- Colore CMYK
- (0%,11%,26%,31%)
- Colore RGB
- R: 175 G: 155 B: 130
- Rango
- Membro litostratigrafico (Sotto-formazione)
- Uso
- Unità in uso.
- Status
- termine formale valido
Nomenclatura
- Deutsch
- Langy-Member
- Français
- Membre de Langy
- Italiano
- Membro di Langy
- English
- Langy Member
- Origine del nome
-
Plan du Langy (VD) - Ormont-Dessous
- Varianti storiche
-
Grès de Langy (Badoux & Homewood 1978, Badoux & Gabus 1991), Langy member (Ringgenberg et al. 2001)
Descrizione
- Potenza
- 40 m (Badoux & Gabus 1991)
Gerarchia e successione
- Unità di rango superiore
- Unità sovrastante
- Unità sottostante
Età
- Geomorfologia
-
- Bathoniano
- Età alla base
-
- Bathoniano
- Metodo di datazione
-
Foraminifères: Protopeneroplis striata (Weynschenk), Archeosepta platierensis (Wernli) [Badoux & Homewood 1978]
Geografia
- Regione-tipo
- Vallée de la Grande Eau, entre Le Sépey et la Forclaz
Paleogeografia e tettonica
- Tipo di origine
-
- sedimentaria
Referenze
- Revisione
-
(2001) :
The Jurassic sequence of the Niesen nappe in the region of Le Sépey - La Forclaz (Swirtzerland): witness of the Piemont rifting in the Helvetic paleogeographic domain. Bull. Soc. vaud. Sci. nat. 87/4, 353-372
p.360: 2.1.6. Langy member (Bathonian) The base and the middle part of this member consist of decimetric beds of coarse calcareous sandstones and argillaceous intercalations. The rest is made of metric to decametric grain flows of coarse calcareous sandstones and calcareous microconglomerates without intercalations. The elements are quartz and feldspars and contain up to 30% of limestone clasts, mainly ooliths with quartz and feldspar cores but also echinodermic fragments and foraminifera (Protopeneroplis striata and Archeosepta platierensis) which indicate a Bathonian age. In the microconglomerates, the detritic fragments are very diversified: gneiss, quartzites, dolomites, black limestones, volcanoclastic rocks and some rhyolites.