Tuors-Member

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Representation and status

Color CMYK
(0%,23%,86%,31%)
Color RGB
R: 175 G: 135 B: 25
Rank
lithostratigraphic Member (Subformation)
Validity
Unit is in Use
Status
informal term

Nomenclature

Deutsch
Tuors-Member
Français
Membre du Val Tuors
English
Tuors Member
Origin of the Name

Val Tuors (GR), 4 km ENE Bergün

Historical Variants
Tuors Member (Furrer et al. 1985)
Nomenclatorial Remarks
Ava da Tuors

Description

Description

Feinkörnige, gut gebankte Sandsteine.

Thickness
200 m (Furrer et al. 1985)

Hierarchy and sequence

Superordinate unit
Units at roof

Age

Age at top
  • Early Triassic
Age at base
  • Early Triassic

Geography

Geographical extent
Albula-, Ducan- und Landwassergebiet.
Type area
Albulagebiet (GR) (Silvretta-Decke)

Palaenography and tectonic

Tectonic unit (resp. main category)
Kind of protolith
  • sedimentary
Conditions of formation
Fining-upward: peneplain development with braided river and alluvial plain sediments.

References

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.17: In the Silvretta nappe the heterogeneous coarse Chazforà conglomerates occur only in a few layers of the basal sequence, concentrated in the Albula valley region. The upper part contains coarse layers of angular vein quartz conglomerates interfingering with a fine grained sandsteon complex (Tuors Mb., ca. 200 m).
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