«Dolomie blonde»

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Representation and status

Color CMYK
(0%,30%,80%,2%)
Color RGB
R: 250 G: 175 B: 50
Rank
lithostratigraphic Formation
Validity
Unit is in Use
Status
incorrect name (though informally used)
Status discussion

Nomenclature

Deutsch
«Dolomie blonde»
Français
«Dolomie blonde»
Italiano
«Dolomie blonde»
English
«Dolomie blonde»
Historical Variants

Calcaires dolomitiques blonds (Chamot 1961, Badoux 1965), Formation des dolomies blondes (Baud 1972), Formation dolomitique (Thury 1973), Dolomies blondes = Norien (Badoux & Gabus 1991), Dolomies Blondes (Dapples 1998), Cycle CV = blond dolomite (Baud et al. 2016)

Nomenclatorial Remarks

Hauptdolomit (Jeannet 1912), Gelber Dolomit (Märki 1926), dolomies blondes et marnes dolomitiques verdâtres ou beiges = dolomies noriennes = dolomies claires du Trias supérieur (Badoux 1981), gelbliche = "blonde" Keuper-Dolomite (Gruber et al. 2010)

Description

Thickness
80-150 m (Baud 1972), 100 m environ (Badoux 1965), 250 m (Badoux & Gabus 1991)

Hierarchy and sequence

Lower boundary

Passage graduel au «Rhétien» par assombrissement des intervalles marneux.

Age

Age at top
  • Norian
Age at base
  • Norian

Palaenography and tectonic

  • Triassic of the Briançonnais
Tectonic unit (resp. main category)
Kind of protolith
  • sedimentary
Conditions of formation

Environnement marin peu profond de faible énergie, pouvant être lagunaire, associé à un climat chaud (précipitation de dolomie primaire; Dapples 1998).

References

Definition
Baud Aymon, Plasencia Pablo, Hirsch Francis, Richoz Sylvain (2016) : Revised middle Triassic stratigraphy of the Swiss Prealps based on conodonts and correlation to the Brianc¸onnais (Western Alps). Swiss J. Geosc. 109/2, 365-377

p. 370: The Cycle CV is made of medium bedded blond dolomite that is correlated with the Norian ‘‘Hauptdolomit’’ of the Eastern and Southern Alps (Jeannet 1912).

Material and varia

15203061
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