Culmet-Kalk

Representation and status

Color CMYK
(0%,27%,32%,27%)
Color RGB
R: 185 G: 135 B: 125
Rank
lithostratigraphic Member (Subformation)
Validity
Unit is in Use
Status
local name (informal)
Status discussion

Nomenclature

Deutsch
Culmet-Kalk
Français
Calcaire du (Piz) Culmet
Italiano
Calcare del (Piz) Culmet
English
Culmet Limestone
Origin of the Name

Piz Culmet (GR), bei Alp Ramoz

Historical Variants
Rätkalke (Eggenberger 1925), Oberer Rhaetkalk auct., Culmet-Kalk (Furrer 1981/1993, Dössegger et al. 1982), Bunte Kalke = Culmet-Kalk (Eberli 1985), Culmet Limestone (Furrer et al. 1985)

Description

Description

Dickbankige bis hin zu massigen, hellgrauen Kalken mit sehr wenigen Fossilien (Bivalven, Ostracoden, Echinoderme, Peloide). Vereinzelt Adern oder Knollen aus dunklem Chert. Leitbank über der typischen Kössen-Formation.

Thickness
7-10 m (Furrer et al. 1985)

Components

Fossil Content
  • echinoderms
  • bivalves
  • ostracods
Dickbankige bis hin zu massigen, hellgrauen Kalken mit sehr wenigen Fossilien: Bivalven, Ostracoden, Echinoderme, Peloide.

Hierarchy and sequence

Units at roof
Upper boundary
Alpisella-Schichten (Allgäu-Fm.)
Lower boundary
Kössen-Fm. bzw. Schattwald-Schichten

Age

Age at top
  • Hettangian
Note about top

Hettangian?

Age at base
  • Hettangian
Note about base

Hettangian?

Geography

Geographical extent
Leitbank der zentralen Ortler-Decke (Engadiner Dolomiten) und der Schiahorn-Decke (Aroser Dolomiten).

Palaenography and tectonic

Tectonic unit (resp. main category)
Kind of protolith
  • sedimentary
Conditions of formation
"Shallow marine environment" (Furrer et al. 1985)

References

Definition
Furrer Heinz (Ed.) (1985) : Field workshop on Triassic and Jurassic sediments in the Eastern Alps of Switzerland. Mitt. geol. Inst. ETH und Univ. Zürich (N.F.) 248, 81 S.

p.27: A thick bedded to massive horizon of grey limestones very poor in fossils (bivalves, ostracods and echinoderms). This characteristic marker bed of the central Ortler unit and the Arosa Dolomites is 7-10 m thick.
Back to top