Tscharren-Formation

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Representation and status

Index
hT
Color CMYK
(11%,0%,22%,29%)
Color RGB
R: 160 G: 180 B: 140
Rank
lithostratigraphic Formation
Validity
Unit is in Use
Status
informal term

Nomenclature

Deutsch
Tscharren-Formation
Français
Formation du Tscharren
Italiano
Formazione del Tscharren
English
Tscharren Formation
Origin of the Name

Tscharren (UR)

Historical Variants

Tscharren-Formation (Schenker 1987, Gisler 2018), Upper Paleozoic Sediments of Tscharren (Franks 1968), Tscharren-Gruppe (Guntli et al. 2016), Tscharren Formation (Berger et al. 2017)

Hierarchy and sequence

Subordinate units

Age

Age at top
  • Late Pennsylvanian
Age at base
  • Late Pennsylvanian
Dating Method

303 +/-4 Ma (Schaltegger & Corfu 1995)

Geography

Type profile

Palaenography and tectonic

  • Permo-Carboniferous
Paleogeography
European Continent
Tectonic unit (resp. main category)

References

Definition
Berger Alfons, Mercolli Ivan, Herwegh Marco, Gnos Edwin (2017) : Geological Map of the Aar Massif, Tavetsch and Gotthard Nappes. Geological Special Map 1:100'000, Explanatory Notes 129

p.43: The Tscharren Formation, outcropping mainly in the Etzlital and Maderanertal, is in all aspects extremely similar to the Diechtergletscher Formation (FRANKS 1968 a, b, SCHENKER 1986, OBERHÄNSLI et al.1988). The rhyolitic tuff of the volcanic sequence alternates with volcaniclastic and clastic rocks (Fig.6) and was dated at 303±4 Ma (SCHALTEGGER & CORFU 1995).

  • «Tuffaceous Member»

    Rank
    lithostratigraphic Member (Subformation)
    Status
    incorrect name (though informally used)
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  • «Ignimbritic Member»

    Status
    unknown status
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  • Rinderbiel-Mikrogranit

    Name Origin

    Hoch Rinderbiel (UR)

    Rank
    lithostratigraphic unit
    In short
    Porphyrischer Mikrogranit der Tscharren-Formation.
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