Sandhubel-Member

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

• Chazforà-Formation

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, ...