Eptingen-Bank

Representation and status

Color CMYK
(0%,30%,68%,2%)
Color RGB
R: 250 G: 175 B: 80
Rank
lithostratigraphic Bed
Validity
Unit is in Use
Status
valid formal name

Nomenclature

Deutsch
Eptingen-Bank
Français
Banc d'Eptingen
Italiano
Strati di Eptingen
English
Eptingen Bed
Origin of the Name

Eptingen (BL)

Historical Variants

Eptinger Oolith (Merki 1961, Müller et al. 1984), Eptingen Bed (Pietsch et al. 2016)

Description

Description

Oolithischer Leithorizont mit meistens dolomitisierten Ooiden. Silexkonkretionen treten lokal im oolithischen Intervall auf.

Thickness
0-8 m (Merki 1961).

Components

Lithologic Content

dolomitisierte Ooide

Hierarchy and sequence

Upper boundary

Oberster Teil des Liedertswil-Members oder unterster Teil des Stamberg-Members.

Lower boundary

Liedertswil-Member

Age

Age at top
  • Ladinian
Age at base
  • Ladinian

Geography

Geographical extent
Faltenjura zwischen Reigoldswil und Bänkerjoch, Tafeljura westlich Rheinfelden, Dinkelberg, Wutachgebiet, sowie Bohrungen Weiach, Benken und Schlattingen.
Type locality
Type profile

Palaenography and tectonic

  • Triassic of the Jura Mountains
Paleogeography
Northern Tethyan Carbonate Platform :
Plateforme de Bourgogne, ... = Northern Tethyan Carbonate Platform (NTCP)
Tectonic unit (resp. main category)
Kind of protolith
  • sedimentary
Metamorphism
non metamorphic

References

Definition
Pietsch Johannes S., Wetzel Andreas, Jordan Peter (2016) : A new lithostratigraphic scheme for the Schinznach Formation (upper part of the Muschelkalk Group of northern Switzerland). Swiss J. Geosc. 109/2, 285-307

The Eptingen Bed represents the middle oolitic interval of the Schinznach Formation. The ooids are mostly dolomitised (Merki 1961; Rieser 1964) and, therefore, lost their internal structure. If the dolomitisation also concerns the matrix, the ooid shapes often can be recognised under microscope only. In the region of Eptingen chert nodules occur in the oolitic interval. They enclose silicified ooids (Merki 1961). For discussion of the lithostratigraphic definition of the oolitic intervals see below.

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