Autochthonous North Alpine Foreland

Representation and status

Color CMYK
N/A
Color RGB
R: 241 G: 239 B: 237
Rank
tectonic domain
Validity
Unit is in Use
Status
valid

Nomenclature

Deutsch
Autochthones Nordalpines Vorland
Français
Avant-pays nord-alpin autochtone
Italiano
Avampaese nordalpino autoctono
English
Autochthonous North Alpine Foreland
Historical Variants

Ausseralpiner Bereich, Schwach deformiertes Nordalpines Vorland (nagra), unités marginales, Autochthones Nordalpines Vorland (DM-Geologie), Autochthonous North Alpine Foreland (Gouffon et al. 2024)

Description

Description

Europäischer Kontinentalschelf ohne alpine Deformation.

Palaenography and tectonic

Paleogeography
North Alpine Foreland Basin
Kind of protolith
  • tectonic

References

Definition
Gouffon Yves (Editor) (2024) : Tectonic Map of Switzerland 1:500000, Explanatory notes. Federal Office of Topography swisstopo, Wabern

p.19: The Autochthonous North Alpine Foreland consists of the European platform with its Cenozoic graben structures of eastern France, southwestern Germany and northern Switzerland (e.g., Illies 1981, Eisbacher et al. 1989). The boundary between the Autochthonous North Alpine Foreland and the Detached North Alpine Foreland marks the northernmost limit of significant Alpine compressional deformation.
Accordingly, the Autochthonous North Alpine Foreland is widely absent [sic; >>> deprived] of map-scale compressional structures; small-scale compressive structures however occur in the southern marginal area (Dèzes et al. 2004, Madritsch et al. 2008). According to microscopic strain analyses, the effects of Neogene Alpine deformation extend hundreds of kilometers out into this domain (Craddock et al. 2022 and ref. therein).

  • Bresse Graben

    Name Origin

    Bresse (France)

    Rank
    tectonic subdomain
    Status
    valid
    In short

    The N–S trending Bresse Graben (a segment of the European Cenozoic Rift System) is ca. 35–60 km wide and stretches roughly from Lyon to Dijon. It is clearly separated from the Haute-Saône Platform by NNE–SSW to NE–SW oriented normal faults.

    The Bresse Graben is filled with Paleogene–Neogene sediments which are up to 2 km thick.

    Age
    Mesozoic
  • Haute-Saône Platform

    Rank
    tectonic subdomain
    Status
    valid
    In short

    The Haute-Saône Platform forms the southeastern rim of the Paris Basin and is formed predominantly by Mesozoic sediments, with some post-rift Neogene Molasse sediments. It is mostly located in France except for the Ajoie area. At its eastern boundary, the separation from the northern part of the Upper Rhine Graben is clearly defined by NNE–SSW trending normal faults. In the south, however, the situation is more complex. Here, the limestone plateau of Ajoie, regarded as belonging to the Haute-Saône Platform, is separated from the northward-adjacent Upper Rhine Graben by a W–E trending flexure dissected by N–S trending normal faults. To the south, the Haute-Saône Platform is mostly bounded by the Detached North Alpine Foreland, in particluar by the frontal Faisceaux of the External Folded Jura. South of the Ajoie area, where the External Folded Jura is missing, the Internal Folded Jura is thrust directly onto the Haute-Saône Platform.

    Age
    Paleozoic
    • Vosges Massif

      Rank
      orography
      Status
      informal term
      In short

      The Vosges Massif exposes the basement of the Haute-Saône Platform. It consists of pre-Mesozoic rocks, including Variscan magmatites and metasediments, pre-Variscan metamorphic rocks and, on the southwestern side of the Upper Rhine Graben, unconformably overlying Permo-Carboniferous sediments.

  • Upper Rhine Graben

    Name Origin

    siehe www.oberrheingraben.de

    Rank
    tectonic subdomain
    Status
    valid
    In short

    The NNE–SSW trending Upper Rhine Graben (a segment of the European Cenozoic Rift System located north of Basel) is up to 40 km wide and separates the Haute-Saône Platform to the west from the South German Platform to the east. The graben shoulders are bounded by steep normal faults and include isolated, lowered blocks of Mesozoic platform sediments along the rift-internal sides (the so-called Vorberg Zone, e.g., Isteiner Klotz north of Basel). The Schwarzwald Fault forms the eastern border of the graben. The southwestern border of the graben with the Haute-Saône Platform forms a flexure. In the southeast, the graben borders the External Folded Jura; the corresponding flexure is accentuated and overprinted by Alpine deformation.

    The Upper Rhine Graben is filled with Paleogene–Neogene sediments of 2–3 km thickness.

    Age
    Cenozoic
    • Mainz-Becken

      Name Origin

      Mainz (Deutschland), Rheinland-Pfalz

      Rank
      sedimentary basin
      Status
      informal term
      In short

      Bassin de sédimentation oligocène-miocène de la partie septentrionale du Fossé du Haut-Rhin.

      Age
      Oligocene
    • Vorberg-Zone (des Oberrhein-Grabens)

      Name Origin

      siehe Wikipedia

      Rank
      tectonic zone
      Status
      informal term
      In short

      The Vorberg Zone encompasses blocks of Mesozoic platform sediments lowered along steep normal faults at the rift-internal sides of the Upper Rhine Graben (e.g., Isteiner Klotz north of Basel).

      • Isteiner Horst («Isteiner Klotz»)

        Name Origin

        Istein (Deutschland)

        Rank
        tectonic unit
        Status
        local name (informal)
        • Wohlgeschichtete-Kalke-Formation

          Name Origin

          Siehe Lithostratigraphisches Lexikon Deutschland (LithoLex).

          Rank
          lithostratigraphic Formation
          Status
          valid formal name
          In short

          Dünngebankter mikritischer Kalk.

          Age
          late Oxfordian
        • «Leitschichten»

          Rank
          lithostratigraphic unit
          Status
          incorrect name (though informally used)
        • «Grenzmergelhorizont»

          Rank
          lithostratigraphic Bed
          Status
          local name (informal)
          Valid term
          Roeschenz-Member
          In short

          Kalkmergel-Horizont zwischen ungeschichtete Kalke des «Rauraciens» (unten) und wohlgeschichtete Kalke des «Séquaniens» (oben).

        • «Splitterkalk»

          Name Origin

          Splitterige, harte und spröde Kalke

          Rank
          lithostratigraphic Bed
          Status
          local name (informal)
          Valid term
          Tiergarten-Member Buix-Member
          In short

          Spröder, dichter, weisser bis gelblicher mikritischer Kalk, gegen oben oolithisch.

          • «Jaspisknollen»

            Rank
            lithostratigraphic Bed
            Status
            local name (informal)
            Valid term
            Buix-Member
            In short

            Lokaler Leithorizont mit Silexknollen im mittleren Teil des «Splitterkalkes».

        • «Rauracien-Korallenkalk»

          Name Origin

          Rauraci: peuple gaulois qui vivait à l'ouest de Bâle

          Rank
          petrographic facies
          Status
          obsolete term (disused)
          Valid term
          Grellingen-Member
          In short

          Koralligenen Fazies der St-Ursanne-Formation (Bioherme und Biostrome).

        • «Thamnastraeen-Mergel»

          Name Origin

          Namengebendes Fossil (Korallen): Thamnastraea arachnoides Parkinson.

          Rank
          lithostratigraphic unit
          Status
          obsolete term (disused)
          Valid term
          Liesberg-Member
          In short

          Blaugraue, etwas sandige Mergel mit zahlreichen mit häufiges Auftreten von leicht verkieselten Thamnastreen.(Korallenstöcke des «Unteren Rauraciens»).

          Age
          Oxfordian
        • «Terrain à chailles (marno-calcaires)»

          Name Origin

          Présence de miches calcaires (et non de nodules de silex, comme le terme de chailles le fait penser).

          Rank
          lithostratigraphic unit
          Status
          incorrect term (disused)
          Valid term
          Sornetan-Member
          In short

          Marnes avec de grandes concrétions calcaires contenant de la glauconie et des ammonites.

          Age
          Oxfordian
    • Kalibecken

      Rank
      paleogeography
      Status
      local name (informal)
      In short

      Bassin de sédimentation éocène-oligocène de la partie méridionale du Fossé du Haut-Rhin, caractérisé par une importante accumulation d'évaporites (Éocène tardif - Oligogcène précoce).

      Age
      middle Eocene
      • Wittelsheimer Becken

        Rank
        paleogeography
        Status
        local name (informal)
        In short

        Cuvette occidentale du bassin potassique rhénan.

      • Münchhauser Subbecken

        Rank
        paleogeography
        Status
        local name (informal)
        In short

        Cuvette centrale, peu marquée, du bassin potassique rhénan.

      • Bugginger Becken

        Rank
        paleogeography
        Status
        local name (informal)
        In short

        Cuvette orientale du bassin potassique rhénan.

      • graben de Dannemarie

        Name Origin

        Dannemarie (France)

        Rank
        tectonic
        Status
        local name (informal)
        In short

        Prolongation méridionale du bassin potassique rhénan (les évaporites n'y sont toutefois plus guère développées). L'accident d'Illfurt le sépare du horst de Mulhous à l'est.

  • South German Platform

    Rank
    tectonic subdomain
    Status
    valid
    In short

    ... abgegrenzt im Westen durch den Oberrhein-Graben, im Osten durch die Böhmische Masse.

    • Hegau-Bodensee Graben

      Rank
      tectonic unit
      Status
      valid
      In short

      The NW–SE trending extensional Hegau-Bodensee Graben represents the southeastern extension of the Freiburg-Bonndorf-Bodensee Fault Zone and is associated with the Neogene Hegau Volcanic Province.

    • Schwarzwald Massif

      Name Origin

      Schwarzwald (S-Deutschland)

      Rank
      orography
      Status
      informal term
      In short

      The Schwarzwald Massif exposes the basement of the South German Platform. It consists mainly of metamorphic and plutonic rocks, with some remnants of Late Paleozoic sediments. It is separated from the Upper Rhine Graben by a major normal fault (Schwarzwald Fault).

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