Membre de Poncin

Representation and status

Color CMYK

0 / 30 / 25 / 0

Color RGB

R: 250 G: 190 B: 175

Rank

lithostratigraphic Member (Subformation)

Validity

Unit is in Use

Status

informal term

Nomenclature

Deutsch

Poncin-Member

Français

Membre de Poncin

Italiano

Membro di Poncin

English

Poncin Member

Origin of the Name

Poncin (Ain, France)

Historical Variants

Sables supérieurs (Renevier 1854, Pictet & Renevier 1858), Cénomanien inférieur (Rollier 1912a), Sables et calcaires gréseux à glauconie (Cénomanien) (Mangold & Enay 2004), Poncin Member (Pictet et al. 2016, Brentini 2018)

Nomenclatorial Remarks

ex «sables supérieurs»

Links

Synonyms

«Grès verts micacés»

Hierarchy and sequence

Superordinate unit

• Formation de la Perte-du-Rhône

Units at roof

• Formation de Narlay

Units at floor

• Membre de Mussel

Upper boundary

Formation de Narlay (passage vertical aussi bien que latéral)

Lower boundary

Membre de Mussel

Age

Age at top

• Late Cenomanian

Note about top

Cénomanien tardif ?

Age at base

• Early Cenomanian

Geography

Geographical extent

[cf. Busnardo et al. 1966a]

Type area

Jura méridional

Palaenography and tectonic

• Cretaceous of the Jura Mountains

Tectonic unit (resp. main category)

• Jura :
  Juragebirge

Kind of protolith

• sedimentary

Metamorphism

non metamorphic

References

Definition

Pictet Antoine, Delamette Michel, Matrion Bertrand (2016) : The Perte-du-Rhône Formation, a new Cretaceous (Aptian-Cenomanian) lithostratigraphic unit in the Jura mountains (France and Switzerland). Swiss J. Geosc. 109/2, 221-240

Material and varia