Untere Sandsteinzone (der OMM)

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Representation and status

Color CMYK
N/A
Color RGB
R: 125 G: 125 B: 125
Rank
lithostratigraphic unit
Validity
Unit is not in Use
Status
obsolete term (disused)

Nomenclature

Deutsch
Untere Sandsteinzone (der OMM)
Français
Untere Sandsteinzone (der OMM)
Italiano
Untere Sandsteinzone (der OMM)
English
Untere Sandsteinzone (der OMM)
Origin of the Name
Sandsteinabfolge im unteren Teil der OMM (zwischen «Burdigales Basiskonglomerat» und Bisig- bzw. Safenwil-Muschelsandstein).
Historical Variants
Untere Sandsteinzone (Büchi 1957, Gerber & Wanner 1984, Habicht 1987), Untere burdigale Sandsteinzone (Büchi 1958a S.102), untere Sandsteinzone (Bitterli et al. 2011), Sandstone succession = untere Sandsteinzone (Jost et al. 2016)

Description

Thickness
40-50 m im Norden, 80-100 m im Süden (Büchi 1957, Kt. Aargau) ; 100-150 m (Büchi et al. 1961, Büchi et al. 1967); 70-100 m (Bitterli et al. 2011) ; 80-250 m (Jost et al. 2016)

Hierarchy and sequence

Units at roof

Age

Age at top
  • Burdigalian
Age at base
  • Burdigalian

Geography

Point of interest
  • Muhen-Rütisgraben (AG)
    Site particularities
    • typische Fazies
    Site accessibility
    • Bachprofil
    Coordinates
    • (2648200 / 1242725)
    Note
    • almost continuous section (Jordan et al. 2011b Fig.12, Jost et al. 2016 p.154)

Palaenography and tectonic

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

References

Definition
Büchi U. P. (1957) : Zur Gliederung des Burdigalien im Kanton Aargau. Bull. Ver. Schweiz. Petrol.-Geol. und - Ing. 23, 33-40
Definition
Jost Jürg, Kempf Oliver, Kälin Daniel (2016) : Stratigraphy and palaeoecology of the Upper Marine Molasse (OMM) of the central Swiss Plateau. Swiss J. Geosc. 109/2, 149-169

p.154: The lowermost OMM unit is in the study area represented by a succession of olive-green grey to brown, (fine- to) medium-grained sandstone (i.e. the typical appearance of OMM-sandstone, as seen in many buildings throughout the Swiss Plateau). Frequently, the glauconite-bearing sandstone appears massive and is largely devoid of macrofossils or pebbles (see also, e.g., Bu¨chi 1957; Frieling et al. 2009).
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