Membre des Erpilles

Back to Membre du Balmi (-grabe/-wald)

Representation and status

Index
t4
Color CMYK
0 / 45 / 65 / 0
Color RGB
R: 245 G: 175 B: 110
Rank
lithostratigraphic Formation
Validity
Unit is in Use
Status
valid formal name
Scs Note

Ratifié par le SKS, avec changement hiérarchique (Formation > Membre).

Scs Date
27.04.2017

Nomenclature

Deutsch
Erpilles-Member
Français
Membre des Erpilles
Italiano
Membro delle Erpilles
English
Erpilles Member
Origin of the Name

Les Erpilles (VD), Rougemont

Historical Variants

Formation des Erpilles (Plancherel et al. 2012, Braillard 2016), Erpilles Member (Baud et al. 2016)

Nomenclatorial Remarks

«Formation bréchique» auct., Bereich der Dolomitbreccien (Genge 1958), Cycle IV (Baud & Mégard-Galli 1975), Cycle IVa (Màgard-Galli & Baud 1977), Lumachelles spathiques et dolomies (Hofstetter 1982)

Description

Thickness
100-250 m (Baud 1972), 80 m au Seehore (Genge 1958)

Hierarchy and sequence

Subordinate units
Units at roof
Units at floor
Lower boundary

Base marquée par un brusque apport terrigène (argiles jaunâtres à sombres).

Age

Age at top
  • Late Ladinian
Age at base
  • Early Ladinian

Geography

Type area
Rocher des Rayes (VD), écaille des Gastlosen
Type locality
  • Les Erpilles (VD)
    Site particularities
    • Obergrenze
    • typische Fazies
    Coordinates
    • (2581250 / 1152500)
    Note
    • Plancherel et al. 2012 ; base absente tectoniquement
Type profile
  • Les Erpilles (VD)
    Site particularities
    • Obergrenze
    • typische Fazies
    Coordinates
    • (2581250 / 1152500)
    Note
    • Baud et al. 2016: base définie par un plan de chevauchement
Reference profiles
  • Rocher Plat - Rocher Pourri (VD)
    Site particularities
    • Obergrenze
    • Untergrenze
    • typische Fazies
    Site accessibility
    • Grat
    Coordinates
    • (2581020 / 1145290)
    Note
    • Baud et al. 2016 Suppl. Mat. Fig. g/h: 55 m

Palaenography and tectonic

  • Triassic of the Briançonnais
Paleogeography
Briançonnais Terrane :

microcontinent briançonnais

Tectonic unit (resp. main category)
Kind of protolith
  • sedimentary
Metamorphism
non metamorphic

References

Definition
Baud Aymon, Plasencia Pablo, Hirsch Francis, Richoz Sylvain (2016) : Revised middle Triassic stratigraphy of the Swiss Prealps based on conodonts and correlation to the Brianc¸onnais (Western Alps). Swiss J. Geosc. 109/2, 365-377

p.368: The second member, the Erpillles Member, starts with terrigenous yellowish clay (mudstone). This sudden terrigenous input was previously interpreted as the base of a new cycle (Cycle IVa, Mégard-Galli and Baud 1977). But it is at present interpreted as the continuation of the high-stand deposit of Cycle III that consists of the thick, partly brecciated, dolomite of the Erpilles Member.

Material and varia

15203094

  • «Gelbe Schiefer»

    Rank
    lithostratigraphic unit
    Status
    local name (informal)
    Age
    Ladinian
    Show details
Back to top