Rahberg-Bank

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Representation and status

Color CMYK
(0%,5%,63%,25%)
Color RGB
R: 190 G: 180 B: 70
Rank
lithostratigraphic Bed
Validity
Unit is in Use
Status
valid formal name
Status discussion

Nomenclature

Deutsch
Rahberg-Bank
Français
Banc du Rahberg
Italiano
Strato di Rahberg
English
Rahberg Bed
Origin of the Name

Rahberg = Raaberg (SG), NE Ende des Mattstock

Historical Variants

Rahberghorizont (Funk 1971), Raaberg-Schicht (Haldimann 1977), Rahbergbank, Rahberg-Bank, Raaberg-Schicht (Kuhn 1996), Rahberg Bed (Föllmi et al. 2007)

Description

Description

Dunkler, feinkörniger, inwendig dunkel grünlichgrauer Kalk mit vielen glasigen Quarzkörnern und feinen, dunkelgrünen Glaukonitkörnchen. Verwittert sandig und enthält schwarzgraue, phosphoritartige Knollen und massenhaft Versteinerungen, namentlich Discoideen.

Thickness
5 - 15 cm

Components

Mineral Content
  • quartz
  • glauconite

Hierarchy and sequence

Superordinate unit

Age

Age at top
  • Early Hauterivian
Note about top

Basis der Loryi-Zone

Age at base
  • Early Hauterivian
Note about base

Radiatus-Zone

Dating Method

Ammoniten-Biostratigraphie: Astieria sayni Kil. und Leopoldia sp. (Baumberger et al. 1907, Kuhn 1996).

Geography

Geographical extent
Ostschweiz
Type area
westliche Churfirsten, Säntisgebiet

Palaenography and tectonic

  • Neocomian
  • Cretaceous of the Helvetics
Paleogeography
North Tethyan Shelf :
marge continentale européenne
Tectonic unit (resp. main category)
Kind of protolith
  • sedimentary
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