Variansmergel-Formation

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Representation and status

Index
jmV
Color CMYK
(0%,14%,33%,16%)
Color RGB
R: 215 G: 185 B: 145
Rank
lithostratigraphic Formation
Validity
Unit is in Use
Status
valid formal name

Nomenclature

Deutsch
Variansmergel-Formation
Français
Variansmergel-Formation
Italiano
Variansmergel-Formation
English
Variansmergel-Formation
Origin of the Name

Namengebendes Fossil: Brachiopodenart "Rhynchonella" varians Schl. = Rhynchonelloidella alemanica (Rollier 1911). Siehe auch Lithostratigraphisches Lexikon Deutschland (LithoLex).

Historical Variants

Variansschichten (Kelhofer 1913), Varians-Schichten (Schlegelmilch 1985), Variansmergel-Formation (Bloos et al. 2005, LGRB 2016)

Description

Thickness
Ca. 6 m im Wutachgebiet (Bloos et al. 2005)

Hierarchy and sequence

Subordinate units

Age

Age at top
  • Bathonian
Age at base
  • late Bajocian

Geography

Geographical extent
Oberrheingraben, Hochrhein- und Klettgau-Gebiet (Baden-Württemberg, SW-Deutschland).

Palaenography and tectonic

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

  • Lagenalis-Bank

    Name Origin

    Namengebendes Fossil: Brachiopodenart Zeilleria (Ornithella) lagenalis.

    Rank
    lithostratigraphic Bed
    Status
    local name (informal)
    In short
    Kalkiges Leithorizont im Dach der Variansmergel-Fm.
    Age
    Bathonian
    Show details
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