Dolomia Principale

Back to South Alpine

Representation and status

Index
t5
Color CMYK
0 / 40 / 65 / 0
Color RGB
R: 250 G: 170 B: 105
Rank
lithostratigraphic Formation
Validity
Unit is in Use
Status
incorrect name (though informally used)

Nomenclature

Deutsch
Dolomia Principale
Français
Dolomie Principale
Italiano
Dolomia Principale
English
Dolomia Principale
Origin of the Name

Catena montuosa delle Dolomiti (Italia)

Historical Variants

Dolomia superiore (Stoppani 1857), Hauptdolomit (Lepsius 1878, Trümpy 1930), Haupt Dolomit mit Megalodon Gümbeli = Dolomie supérieure (GK100), Norien = Hauptdolomit (Senn 1924), Dolomia Principale (dal Piaz & Trevisan 1956, Bersezio et al. 2004, Montrasio et al. 2012, Bernoulli et al. 2018), Main Dolomite

Nomenclatorial Remarks

Dachsteindolomit ?

Description

Description

Seine Hauptmerkmale sind regelmässige Bankung, Kompaktheit und verhältnismässig grosse Härte. (Senn 1924)

Thickness
0-400 m (Senn 1924 ; präliasische Abtragung) ; sogar bis über 1000 m.

Components

Fossil Content
  • bivalves
  • gastropods
  • algae
  • trace fossils

Leitfossil: Worthenia escheri Stoppani ; Megalodon gümbeli, Isognomon sp., Dasycladaceae (Gyroporella, Heteroporella)

Hierarchy and sequence

Subordinate units
Units at roof
Units at floor
Upper boundary

relazioni laterali di eteropia con le unità del Gruppo dell’Aralalta

Age

Age at top
  • Middle Norian
Age at base
  • Early Norian
Dating Method

Norico inferiore e medio (Jadoul et al., 1994)

Geography

Geographical extent
Monte San Giorgio

Palaenography and tectonic

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

Carbonate platform; intertidal to supratidal environment (shrinkage cracks, algal stromatolites, saurian tracks)

Metamorphism
non metamorphic
Note on metamorphism

dolomitizzazione precoce

  • «Brecce sommitali» della Dolomia Principale

    Rank
    lithostratigraphic unit
    Status
    incorrect name (though informally used)
    In short

    Prevalenti brecce dolomitiche grigie e grigio scure, massive con litofacies tipiche di una piattaforma marginale-pendio associate a dolomie biocostruite a serpulidi e microbialiti.

    Age
    Norian
    Show details

  • «Membro basale» della Dolomia Principale

    Rank
    lithostratigraphic Member (Subformation)
    Status
    incorrect name (though informally used)
    In short

    Litofacies basale della Dolomia Principale, costituita da dolomie scure stratificate.

    Age
    Late Carnian
    Show details
Back to top