Murteret-Dolomit

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Representation and status

Index
t5'
Color CMYK
(0%,20%,80%,2%)
Color RGB
R: 250 G: 200 B: 50
Rank
lithostratigraphic Formation
Validity
Unit is in Use
Status
informal term

Nomenclature

Deutsch
Murteret-Dolomit
Français
Dolomie du Murteret
Italiano
Dolomia del Murteret
English
Murteret Dolomite
Origin of the Name

Murteret (GR), Zernez

Historical Variants
obernorischer Dolomit (Somm 1965), Murteret Dolomit (Furrer et al. 1985), oberer Dolomit = Murteret-Dolomit (Dössegger 1987, Trümpy et al. 1997), Murteret-Formation

Description

Thickness
50-300 m (Furrer et al. 1985) ; 100-200 m im Gebiet der Kalkfazies bis 900 m gegen Norden (Trümpy et al. 1997)

Components

Fossil Content
  • algae
Kalkalgen, lagenweise Worthenien

Hierarchy and sequence

Upper boundary
Murtèr-Plattenkalk
Lower boundary
Diavel-Fm.

Age

Age at top
  • Norian
Age at base
  • Norian

Geography

Type area
Engadiner Dolomiten (GR)

Palaenography and tectonic

Tectonic unit (resp. main category)
Kind of protolith
  • sedimentary
Conditions of formation
"Shallow sub- tu supratidal" (Furrer et al. 1985)

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.25: Murteret Dolomit, 50-300m: alternation of thick and thinbedded dolomites with sparry pseudomorphs after anhydrite nodules. Shallow sub- to supratidal.
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