Sandhubel-Member

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Representation and status

Color CMYK
(0%,73%,81%,27%)
Color RGB
R: 185 G: 50 B: 35
Rank
lithostratigraphic Member (Subformation)
Validity
Unit is in Use
Status
informal term

Nomenclature

Deutsch
Sandhubel-Member
Français
Membre du Sandhubel
Italiano
Membro dell Sandhubel
English
Sandhubel Member
Origin of the Name

Sandhubel (GR), 4 km S Arosa

Historical Variants

Quarzporphyr(tuffe) auct., Sandhubelporphyr (Studer 1837, Rutsch et al. 1966), Feldsteinporphyr (Theobald 1864 S.50), Sandhubel Member (Furrer et al. 1985)

Description

Description

Quarzporphyr, von blassgrüner bis braunvioletter Farbe, mit Einsprengungen von Quarz, Feldspat und Glimmer (Biotit), bald massig bald verschiefert; bisweilen vergesellschaftet mit Quarzporphyrtuffen.

Thickness
300−540 m (Furrer et al. 1985)

Hierarchy and sequence

Units at roof

Age

Age at top
  • Early Permian
Age at base
  • Early Permian

Geography

Geographical extent
Nur im Landwassergebiet: von der Alp Ramoz (E Aroser Rothorn) über den Sandhubel zur Maienfelder Furka und zum Kummerhubel.
Type area
Landwassergebiet (GR) (Silvretta-Decke)
Type locality
  • Sandhubel (GR)
    Site particularities
    • typische Fazies
    Site accessibility
    • Grat
    Coordinates
    • (2771600 / 1179000)
    Note
    • Rutsch et al. 1966

References

Definition
Studer B. (1837) : Die Gebirgsmasse von Davos. Neue Denkschr. allg. Schweiz. Ges. f. ges. Natw. 1 (1836)
Definition
Furrer Heinz (Ed.) (1985) : Field workshop on Triassic and Jurassic sediments in the Eastern Alps of Switzerland. Mitt. geol. Inst. ETH und Univ. Zürich (N.F.) 248, 81 S.

p.16: The Sandhubel Mb. of the Landwasser area (300 to 540 m) mainly consists of volcanoclastics, ignimbrites, tuffs and layered light to green ashtuffs, ...
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