• Quaternary (2.58 Ma)

    Rang
    Période chronostratigraphique
    Statut
    terme formel valide
    Âge
    Gélasien - Holocène
    En bref

     

    Geological period beginning with the Gauss/Matuyama palaeomagnetic reversal and largely influenced by successive glacials in a context of increased global ice volume. In Switzerland one can assume that all of the (peri)glacial deposits belong to the Quaternary.

     

    • Holocene (11.7 ka)

      Name Origin

      holos = fully, entirely , kaïno = recent

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      En bref

       

      Most recent stratigraphic unit referring to the warm episod that began with the end of the last glacial period.

       

      Age
      Holocène
      • Subatlantic

        Rang
        climato/palynostratigraphie
        Statut
        terme informel
        En bref

         

        Current climatic/palynological stage of the European Quaternary (approximate age range: from 2800-2450 calBP = 850-500 BC to present).

         

        Age
        Holocène
      • Subboreal

        Rang
        climato/palynostratigraphie
        Statut
        terme informel
        En bref

         

        Palynological stage of the European Quaternary (approximate age range: 5500-2800 calBP).

         

        Age
        Holocène
      • Atlantic

        Name Origin

        Warm and moist climatic phase originally based on the study of Danish peat bogs.

        Rang
        climato/palynostratigraphie
        Statut
        terme informel
        En bref

         

        Palynological stage depicting a climatic optimum in Europe, and characterised by the presence of oak, elm, linden and iva (approximate range: 9000-5500 calBP).

         

        Age
        Holocène
      • Boreal

        Name Origin

        Cold climatic phase originally based on the study of Danish peat bogs.

        Rang
        climato/palynostratigraphie
        Statut
        terme informel
        En bref

         

        Palynological stage of the European Quaternary (approximate age range: 10200-9000 calBP).

         

        Age
        Holocène
      • Preboreal

        Name Origin

        Transitional climatic phase originally based on the study of Danish peat bogs.

        Rang
        climato/palynostratigraphie
        Statut
        terme informel
        En bref

         

        Palynological stage of the European Quaternary, at the base of the Holocene (approximate age range: 11650-10200 calBP).

         

        Age
        Holocène
    • Pleistocene (2.58 Ma)

      Name Origin

      pleistos = le plus , kaïno = récent

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Gélasien
      • Late Pleistocene (126 ka)

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        By definition, the Late Pleistocene corresponds to the last interglacial–glacial cycle (Gondiswil Interglacial and Birrfeld Glacial in Switzerland).

         

        • Younger Dryas

          Name Origin

          Named after the cold-climate wildflower Dryas octopetala Linnaeus.

           

          Rang
          climato/palynostratigraphie
          Statut
          terme informel
          En bref

           

          Cold floral stage at the end of the Late Pleistocene (12900-11500 BP = 11000-9500 av. J.C.).

           

          Age
          Spätes Pleistozän
        • Allerød

          Name Origin

          Named after the town of Allerød (Denmark).

           

          Rang
          climato/palynostratigraphie
          Statut
          terme informel
          En bref

           

          Warmer climatic oscillation of the late glacial Pleistocene (11800-11000 BP = 11400-10730 av. J.C.), identified on the basis of pollen analysis.

           

          Age
          Spätes Pleistozän
        • Older Dryas

          Name Origin

          Named after the cold-climate wildflower Dryas octopetala Linnaeus.

          Rang
          climato/palynostratigraphie
          Statut
          terme informel
          En bref

           

          (12000-11800 BP = 11590-11400 av. J.C.)

           

          Age
          Spätes Pleistozän
        • Bølling

          Name Origin

          série de tourbes découvertes au lac Bølling, dans le Jutland central

          Rang
          climato/palynostratigraphie
          Statut
          terme informel
          En bref

           

          Floral stage (13000-12000 BP = 11720-11590 av. J.C.).

           

          Age
          Spätes Pleistozän
        • Oldest Dryas

          Name Origin

          Named after the cold-climate wildflower Dryas octopetala Linnaeus.

          Rang
          climato/palynostratigraphie
          Statut
          terme informel
          En bref

           

          Ab ca. 18'000-15'000 BP, je nach Autor.

           

          Age
          Spätes Pleistozän
        • Eemian

          Name Origin

          Named after the river Eem in the area of the city of Amersfoort (Netherlands).

           

          Rang
          chronostratigraphie
          Statut
          terme informel
          Nomenclatorial Remarks
          Riss-Würm interglacial (Alps), Ipswichian (United Kingdom), Mikulin interglacial (Russia), Valdivia interglacial (Chile), Sangamonian (North America)
          En bref

           

          Initial palynostratigraphic subdivision of the Late Pleistocene («Tarantian») of NW Europe, roughly corresponding to MIS-5e and to the Riss-Würm Interglacial.

           

          Age
          Spätes Pleistozän
      • Middle Pleistocene (781 ka)

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        In Switzerland the age of the Hochterrasse deposits roughly coincides with the Middle Pleistocene.

         

        • Saalian

          Name Origin

          Named after the river Saale (Deutschland).

           

          Rang
          chronostratigraphie
          Statut
          terme informel
          En bref

           

          Terminal substage of the Middle Pleistocene of NW Europe, between Holsteinian and Eemian, characterised by cold climate (culminating in the Alpine region with the Riss glaciation).

           

          Age
          Pléistocène moyen
        • Holsteinian

          Name Origin

          Named after the Holstein region (N Germany).

           

          Rang
          chronostratigraphie
          Statut
          terme informel
          Nomenclatorial Remarks
          Hoxnian (United Kingdom), Likhvinian (Russia)
          En bref

           

          Palynostratigraphic subdivision of the Middle Pleistocene (Ionian) of NW Europe, corresponding to MIS-11 and to the Mindel-Riss Interglacial.

           

          Age
          Pléistocène moyen
        • Elsterian

          Name Origin

          Named after the river Weisse Elster (E Germany), a tributary of the river Saale.

           

          Rang
          chronostratigraphie
          Statut
          terme informel
          Nomenclatorial Remarks
          Anglian (United Kingdom), Okian (Russia)
          En bref

           

          Substage of the Middle Pleistocene of NW Europe, corresponding to MIS-12 and characterised by a cold climate (culminating in the Alpine region with the Mindel glaciation).

           

          Age
          Pléistocène moyen
        • Cromerian

          Name Origin

          Named after the East Anglian town of Cromer (UK).

           

          Rang
          chronostratigraphie
          Statut
          terme informel
          En bref

           

          Initial palynostratigraphic subdivision of the Middle Pleistocene («Ionian») of NW Europe, encompassing several glacial/interglacial cycles under a relatively mild climate (Günz-Mindel Interglacial).

           

          Age
          Pléistocène moyen
      • Early Pleistocene (2.58 Ma)

        Rang
        chronostratigraphie
        En bref

         

        Geological subepoch characterised by a predominantly reversed polarised paleomagnetic field (Matuyama) and the onset of large glacial fluctuations.

         

        Age
        Gélasien
        • Calabrian (1.80 Ma)

          Name Origin

          Named after the Calabria region (Italy).

           

          Rang
          Étage chronostratigraphique
          Statut
          terme formel valide
          En bref

           

          Second substage of the Early Pleistocene.

           

          Age
          Pléistocène précoce
          • Sicilian

            Name Origin

            Named after Sicilia (Italia).

             

            Rang
            Sous-Étage chronostratigraphique
            Statut
            valide
            En bref

             

            Regional substage (= late Calabrian, Early Pleistocene) in Italy.

             

            Age
            Calabrien
          • Emilian

            Name Origin

            Named after the Emilia region (Italia).

             

            Rang
            Sous-Étage chronostratigraphique
            Statut
            valide
            En bref

             

            Regional substage (= middle Calabrian, Early Pleistocene) in Italy.

             

            Age
            Calabrien
          • Santernian

            Rang
            Sous-Étage chronostratigraphique
            Statut
            valide
            En bref

             

            Regional substage (= early Calabrian, Early Pleistocene) in Italy.

             

            Age
            Calabrien
        • Gelasian (2.58 Ma)

          Name Origin

          Named after the town of Gela (Italia), Sicilia.

           

          Rang
          Étage chronostratigraphique
          Statut
          terme formel valide
          Age
          Pléistocène précoce
  • Neogene (~ 23 Ma)

    Origine du nom

    neos = new , genos = birth

    Rang
    Période chronostratigraphique
    Statut
    terme formel valide
    Âge
    Aquitanien - Plaisancien (Piacenzien)
    En bref

     

    Formal name for the «late Tertiary» period (Miocene and Pliocene).

     

    • Pliocene (~5.3 Ma)

      Name Origin

      plios = plus , kaïno = récent

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Zancléen
      • Piacenzian (~3.6 Ma)

        Name Origin

        Named after the village of Piacenzia (Italia).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Pliocène tardif
      • Zanclean (~5 Ma)

        Name Origin

        Derived from Zancla, the pre-Roman name for the town of Messina in Sicily (Italy).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        First stage of the Pliocene.

         

        Age
        Pliocène
    • Miocene (~23 Ma)

      Name Origin

      meios = less, kaïno = recent

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Aquitanien
      • Messinian (~7 Ma)

        Name Origin

        Named after the town of Messina (Italia), Sicilia.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        Last stage of the Miocene.

         

        Age
        Miocène tardif
      • Tortonian (~11.6 Ma)

        Name Origin

        Named after the city of Tortona (Italia), Piemonte.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        Stage of the Late Miocene.

         

        Age
        Miocène tardif
      • Serravallian (~13.8 Ma)

        Name Origin

        Named after the town of Serravalle Scrivia (Italia), Piemonte.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        Stage of the Middle Miocene.

         

        Age
        Miocène moyen
      • Langhian (~16.0 Ma)

        Name Origin

        Named after the Langhe area north of Ceva (Italy).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Nomenclatorial Remarks
        le Langhe (plural)
        En bref

         

        Stage of the Middle Miocene.

         

        Age
        Miocène moyen
        • Nördlinger-Ries-Impakt

          Statut
          terme local (informel)
          En bref

           

          Meteorischer Impakt im Grenzgebiet zwischen Schwäbischer Alb und Fränkischer Alb, der durch Coesit-führende Impaktite (insb. Suevit = Schwabenstein) und Tektite (sog. Moldavit) bewiesen wurde.

           

          Age
          Langhien
      • Burdigalian (~20.4 Ma)

        Name Origin

        Named after the town of Bordeaux = Burdigala (Gironde, France).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Nomenclatorial Remarks
        Latin: Burdigalia
        En bref

         

        Second stage of the Miocene.

         

        Age
        Miocène précoce
      • Aquitanian (~23 Ma)

        Name Origin

        Named after the Aquitaine region (France).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        First stage of the Miocene Series, and hence base of the Neogene System.

         

        Age
        Miocène précoce
  • Palaeogene (~ 66 Ma)

    Origine du nom

    palaeos = ancient , genos = birth

    Rang
    Période chronostratigraphique
    Statut
    terme formel valide
    Âge
    Danien - Oligocène tardif
    En bref

     

    Formal name for the «early Tertiary» period (Paleocene, Eocene and Oligocene).

     

    • Oligocene (~34 Ma)

      Name Origin

      oligos = peu , kaïno = récent

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Rupélien
      • Chattian (~28 Ma)

        Name Origin

        Named after the Chatti tribe (Deutschland).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Oligocène
      • Rupelian (~34 Ma)

        Name Origin

        Named after the Rupel river (Belgium).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        First stage of the Oligocene. Its definition was originally based on the Rupel Group.

         

        Age
        Oligocène précoce
    • Eocene (~56 Ma)

      Name Origin

      eos = aurore, début , kaïno = récent

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Yprésien
      • Priabonian (~38 Ma)

        Name Origin

        Named after the village of Priabona (Italia), Vicenza.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Nomenclatorial Remarks
        Parastratotypes à Ghenderle, Brendola, Mossano et Possagno (Cita 1969) ; calcaires marneux à Echinides de Priabona (Boussac 1909a)
        En bref

         

        Last stage of the Eocene. Definition originally based on the «assises de la Granella», «groupe des couches à Orbitoides de Priabona» and «marnes de Brendola».

         

        Age
        Eocène tardif
      • Bartonian (~41 Ma)

        Name Origin

        Named after the village of Barton-on-Sea (Hampshire, UK).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        Second stage of the Middle Eocene. Its definition was originally based both on the Barton Beds (Hampshire) and the Sables d'Auvers-Beauchamp (Paris Basin).

         

        Age
        Eocène moyen
        • Marinesian

          Name Origin

          Named after the village of Marines (Val-d'Oise, France)

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          En bref

           

          Second substage of the Bartonian in the Paris Basin. Original definition based on the «Sables de Marines». It corresponds to the Late Bartonian of the International Time Scale.

           

          Age
          Bartonien
        • Auversian

          Name Origin

          Named after the town of Auvers-sur-Oise (Val d'Oise, France) ; le stratotype des sablières du Bois-le-Roi est en cours d'aménagement.

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          Durée de validité
          Bartonian
          En bref

           

          First substage of the Bartonian in the Paris Basin. It corresponds to the Early Bartonian of the International Time Scale.

           

          Age
          Bartonien précoce
      • Lutetian (~48 Ma)

        Name Origin

        Named after the town of Paris = Lutetia (France).

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        Second stage of the Eocene.

         

        Age
        Eocène moyen
      • Ypresian (~56 Ma)

        Name Origin

        Named after the village of Ypres = Ieper(Belgium).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        First stage of the Eocene.

         

        Age
        Eocène précoce
        • Cuisian

          Name Origin

          Named after the village of Cuise-la-Motte (Oise, France).

           

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          En bref

           

          Last, informal substage of the Ypresian.

           

          Age
          Yprésien tardif
        • Sparnacian

          Name Origin

          Named after the town of Épernay = Sparnacum (Marne, France).

           

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          En bref

           

          Early Ypresian of the Paris Basin.

           

          Age
          Eocène précoce
    • Paleocene-Eocene Thermal Maximum (PETM)

      Rang
      climato/palynostratigraphie
      Statut
      terme informel
      En bref

       

      Global thermal maximum marked by a strong negative anomaly in δ13C values at the Paleocene-Eocene boundary.

       

    • Paleocene (~66 Ma)

      Name Origin

      palaeos = ancient , eos = dawn, kaïno = recent (i.e. Palaeo-Eocene, see Pulvertaft 1999)

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      • Thanetian (~59 Ma)

        Name Origin

        Named after the Isle of Thanet (Kent, UK).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        Last stage of the Paleocene.

         

        Age
        Paléocène tardif
      • Selandian (~62 Ma)

        Name Origin

        Named after the Zealand island (Denmark).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Paléocène moyen
      • Danian (~ 66 Ma)

        Name Origin

        Named after the Latin name for Denmark.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        First stage of the Paleocene (and hence of the Cenozoic as well).

         

        Age
        Paléocène précoce
  • Cretaceous (~ 145 Ma)

    Origine du nom

    Named derived from the characteristic chalk deposits (Latin: creta = craie, Kreide) of the Paris-London Basin.

     

    Rang
    Période chronostratigraphique
    Statut
    terme formel valide
    Âge
    Berriasien - Maastrichtien
    • Late Cretaceous (~ 100 Ma)

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Cénomanien
      • Maastrichtian (~ 71 Ma)

        Name Origin

        Named after the town of Maastricht (Netherlands).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        Last stage of the Cretaceous (and hence of the Mesozoic as well).

         

        Age
        Maastrichtien
      • Campanian (~ 84 Ma)

        Name Origin

        Named after the Champagne de Saintonge (Charentes, France), near Cognac.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Campanien
      • Santonian (~ 86 Ma)

        Name Origin

        Named after the former province of Saintonge (Charentes, France).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Santonien
      • Coniacian (~ 89 Ma)

        Name Origin

        Named after the town of Cognac (Charente-Maritime, France), where the historical stratotype lies.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        Initially defined as the basal stage of the «Craie supérieure» (chalk ; cf. Cretaceous).

         

        Age
        Coniacien
      • Turonian (~ 94 Ma)

        Name Origin

        Named after Turonia, the Latine name for Tours (France), Indre-et-Loire.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Turonien
      • Bonarelli level (OAE-2)

        Name Origin

        Named after the Italian geologist Guido Bonarelli (1871-1951).

        Rang
        OAE
        Statut
        valide
        En bref

         

        Oceanic anoxic event at the Cenomanian/Turonian boundary (around 93 Ma ago) with a major impact on the chemistry of the oceans worldwide. This event correlates with a marine extinction event.

         

        Age
        Cénomanien tardif
      • Cenomanian (~ 100 Ma)

        Name Origin

        Named atfer Cenomanum, the Latine name for Le Mans (France), Sarthe.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        First stage of the Late Cretaceous.

         

        Age
        Cénomanien
    • Early Cretaceous (~ 145 Ma)

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Berriasien
      • Albian (~ 112 Ma)

        Name Origin

        Named after the Aube region (France).

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Nomenclatorial Remarks
        <p>Latin: Alba</p>
        En bref

         

        Last stage of the Early Cretaceous.

         

        Age
        Albien
        • Vraconnien

          Name Origin

          La Vraconnaz = La Vraconne (VD), Saint-Croix

          Rang
          chronostratigraphie
          Statut
          terme obsolète (abandonné)
          Nomenclatorial Remarks
          <p>Vraconnin (Mayer-Eymar 1885) = Albien moyen à tardif &gt;&lt; Rhotomagin = Vraconnien !</p>
          En bref

           

          Local chronostratigraphic subdivision corresponding to the late Albian (and earliest Cenomanian).

           

          Age
          Albien terminal
        • Oceanic Anoxic Event (OAE 1d)

          Rang
          OAE
          Statut
          valide
          Age
          Albien terminal
        • Oceanic Anoxic Event (OAE 1c)

          Rang
          chemostratigraphie
          Statut
          valide
          En bref

           

          Oceanic anoxic event of the Late Albian.

           

          Age
          Albien moyen
      • Paquier Oceanic Anoxic Event (OAE 1b)

        Rang
        OAE
        Statut
        valide
        En bref

         

        Oceanic anoxic event of the Early Albian.

         

        Age
        Spätestes Aptien
      • Aptian (~ 125 Ma)

        Name Origin

        Named after the town of Apt (Vaucluse, France).

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        Stage of the Early Cretaceous.

         

        Age
        Aptien
        • Clansayésien

          Name Origin

          Named after the village of Clansayes (Drôme, France).

           

          Rang
          chronostratigraphie
          Statut
          terme local (informel)
          En bref

           

          Local chronostratigraphic substage corresponding to the Late Aptian.

           

          Age
          Aptien tardif
        • Gargasian

          Name Origin

          Named after the village of Gargas (Vaucluse, France).

           

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          En bref

           

          Local chronostratigraphic subdivision corresponding to the latest Early Aptian and to the Middle Aptian.

           

          Age
          Aptien précoce
        • Bedoulian

          Name Origin

          Named after the village of La Bédoule (Bouches-du-Rhône, France), near Cassis.

           

          Rang
          chronostratigraphie
          Statut
          terme local (informel)
          Durée de validité
          Aptian
          En bref

           

          Local chronostratigraphic subdivision designating the Early Aptian. The Bedoulian, based on pelagic deposits (Marno-calcaires de la Bedoule), is approximately equivalent to the Rhodanian, which is based on littoral deposits.

           

          Age
          Aptien précoce
        • Selli level (OAE 1a)

          Name Origin

          Named after the Italian geologist Raimondo Selli (1916-1983).

          Rang
          OAE
          Statut
          valide
          En bref

           

          Oceanic anoxic event at the base of the Aptian (around 120 Ma ago) with a major impact on the chemistry of the oceans worldwide.

           

          Age
          Aptien précoce
      • Barremian (~ 130 Ma)

        Name Origin

        Named after the village of Barrême (Alpes-de-Haute-Provence, France).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        ... based on the Marno-calcaires de Barrême.

         

        Age
        Barrémien
      • Hauterivian (~ 134 Ma)

        Name Origin

        Named after the village of Hauterive (NE), NE Neuchâtel.

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Hauterivien
      • Valanginian (~ 140 Ma)

        Name Origin

        Named after the village of Valangin (NE), at the upper end of the Gorges du Seyon (see also inventory of Swiss geotopes n°245).

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Nomenclatorial Remarks
        <p>Valendis = ancien nom allemand de Valangin</p>
        En bref

         

        Second stage of the Early Cretaceous.

         

        Age
        Valanginien
      • Berriasian (~ 145 Ma)

        Name Origin

        Named after the village of Berrias (Ardèche, France).

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Nomenclatorial Remarks
        <p>The Berriasella jacobi Zone was previously&nbsp;placed at the end of the Tithonian.</p>
        En bref

         

        First stage of the Cretaceous.

         

        Age
        Berriasien
  • Jurassic (~ 200 Ma)

    Origine du nom

    Named after the Jura Mountains (France, Switzerland).

     

    Rang
    Période chronostratigraphique
    Statut
    terme formel valide
    Âge
    Hettangien - Tithonien
    • Late Jurassic (~ 161 Ma)

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Oxfordien
      • Tithonian (~ 150 Ma)

        Name Origin

        Named derived from the Greek mythology: Tithon was the son of Laomedon of Troy, who fell in love with Eos, Greek goddess of the dawn (thus prefiguring the Cretaceous system).

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Nomenclatorial Remarks
        <p>The Berriasella jacobi Zone, previously&nbsp;placed at the end of the Tithonian, is now considered as defining the start&nbsp;of the Berriasian.</p>
        En bref

         

        Last stage of the Jurassic.

         

        Age
        Tithonien
      • Kimmeridgian (~ 155 Ma)

        Name Origin

        Named after the town of Kimmeridge on the Dorset coast (UK). The Kimmeridge Clay Formation is the main oil source rock in the North Sea petroleum province.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Kimméridgien
      • Oxfordian (~ 161 Ma)

        Name Origin

        Named after the city of Oxford (UK).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        First stage of the Late Jurassic.

         

        Age
        Oxfordien
    • Middle Jurassic (~ 175 Ma)

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Aalénien
      • Callovian (~ 165 Ma)

        Name Origin

        Named derived from the old spelling of Kellaways Bridge (UK), Wiltshire, 2 miles NE Chippenham.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        Last stage of the Middle Jurassic.

         

        Age
        Callovien
      • Bathonian (~ 168 Ma)

        Name Origin

        Named after the town of Bath (Somerset, UK), near Bristol. The city itself is largely built of Bath Stone, a bright white oolithic limestone that is quarried nearby.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        Third stage of the Middle Jurassic.

         

        Age
        Bathonien
      • Bajocian (~ 172 Ma)

        Name Origin

        Named after the town of Bayeux (Calvados, France) in Normandy.

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Nomenclatorial Remarks
        <p>Latin: Bajocium</p>
        En bref

         

        Second stage of the Middle Jurassic.

         

        Age
        Bajocien
        • Gaetani Oceanic Anoxic Event

          Name Origin

          Named in recognition of Maurizio Gaetani's work on Jurassic sedimentary successions of the Lombardy Basin.

          Rang
          OAE
          Statut
          terme informel
          En bref

           

          Black shale interval locally developped at the transition betwenn the Rosso Ammonitico Lombardo and the Radiolarite Group.

           

          Age
          frühes Bajocien
      • Aalenian (~ 175 Ma)

        Name Origin

        Named after the town of Aalen (Germany), Baden-Württemberg

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        First stage of the Middle Jurassic.

         

        Age
        Aalénien
    • Early Jurassic (~ 200 Ma)

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Hettangien
      • Toarcian (~ 183 Ma)

        Name Origin

        Named after the town of Thouars (Deux-Sèvres, France), S Saumur. The protected stratotype lies in an old quarry.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Nomenclatorial Remarks
        Latin: Toarcium
        En bref

         

        The Pliensbachian/Toarcian boundary is marked by a major faunal turnover and regional stratigraphic gaps, followed by a global Oceanic Anoxic Event (OAE) recorded as black shales (such as the well-known «Posidonienschiefer» of Southern Germany, equivalent to the French «schistes-carton»).

         

        Age
        Toarcien
        • Late Toarcian

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme formel valide
          Age
          Toarcien tardif
        • Middle Toarcian

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme formel valide
          En bref

           

          The Middle Toarcian is defined biostratigraphically by the ammonite genera Hildoceras and Haugia.

           

          Age
          Toarcien moyen
        • Early Toarcian

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme formel valide
          En bref

           

          The Early Toarcian is characterized almost worldwide by black shales (among which the well-known «Posidonienschiefer» of Southern Germany, and the French «schistes-carton») with an ammonite fauna composed mainly of dactylioceratids, harpoceratids and early hildoceratids.

           

          Age
          Toarcien précoce
          • Toarcian Oceanic Anoxic Event

            Rang
            OAE
            Statut
            terme informel
            En bref

             

            Major oceanic anoxic event of the Early Toarcian (around 183 Ma ago), documented by black shale deposits found on all major continents (no oceanic drilling cores have recovered black shales of this age as there is little or no Toarcian ocean crust remaining in the world ocean). This event correlates with a marine extinction event.

             

      • Pliensbachian (~ 190 Ma)

        Name Origin

        Named after the village of Pliensbach (Baden-Württemberg, S Germany), 30 km E Stuttgart.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Pliensbachien
        • Domerian

          Name Origin

          Named after Monte Domaro (Italia), Val Trompia / Lombardia.

           

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme informel
          En bref

           

          Informal substage corresponding to the late Pliensbachian.

           

          Age
          Pliensbachien tardif (= Domérien)
        • Carixian

          Name Origin

          Named after Charmouth (Dorset, UK).

           

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme informel
          Nomenclatorial Remarks
          Latin: Carixium
          En bref

           

          First, informal substage of the Pliensbachian.

           

          Age
          Pliensbachien précoce (= Carixien)
      • Sinemurian (~ 196 Ma)

        Name Origin

        Named after the town of Sémur-en-Auxois (Côte-d'Or, France).

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Nomenclatorial Remarks
        <p>Latin: Sinemurium</p>
        Age
        Sinémurien
        • Lotharingian

          Name Origin

          Named after the Lorraine region (Lotharingium = carolingian province), NE France.

           

          Rang
          chronostratigraphie
          Statut
          terme obsolète (abandonné)
          En bref

           

          Former chronostratigraphic subdivision corresponding to the Late Sinemurian substage.

           

          Age
          Sinémurien tardif
      • Hettangian (~ 200 Ma)

        Name Origin

        Named after the town of Hettange (Moselle, N France), just south of the border with Luxembourg,

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        First stage of the Jurassic.

         

        Age
        Hettangien
  • Triassic (~ 252 Ma)

    Origine du nom

    Name derived from the classical three-fold subdivision in the germanic facies realm.

    Rang
    Période chronostratigraphique
    Statut
    terme formel valide
    En bref

     

    Tectonically rather quiet period inbetween the Variscan and Alpine orogenic cycles. The first deposits are transgressive on a vast peneplain.

     

    Remarques nomenclatoriales
    die Trias (DE), le Trias (FR)
    • Late Triassic (~ 229 Ma)

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Carnien
      • Rhaetian (~ 204 Ma)

        Name Origin

        Rhaetian Alps (Switzerland, Austria and Italy)

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Rhétien
      • Norian (~ 217 Ma)

        Name Origin

        Noric Alps / Noricum (Latin): ancient Roman province south of the Danube River in present-day Austria.

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Norien
        • Sevatian

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          En bref

           

          Local substage corresponding to the Late Norian (Late Triassic).

           

          Age
          Norien
        • Alaunian

          Name Origin

          Named after the Hallaun people in Hollein (Tyrol, Austria).

           

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          En bref

           

          Local substage corresponding to the Middle Norian (Late Triassic).

           

          Age
          Norien
        • Lacian

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          En bref

           

          Local substage corresponding to the Early Norian (Late Triassic).

           

          Age
          Norien
      • Carnian (~ 229 Ma)

        Name Origin

        Named atfer the Carnic Alps zwischen Austria and Italy (East Tyrol, Carinthia, Friuli and Veneto).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Carnien
        • Tuvalian

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          Age
          Carnien tardif
        • Julian

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          Age
          Carnien moyen
    • Middle Triassic (~ 246 Ma)

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Anisien
      • Ladinian (~ 237 Ma)

        Name Origin

        Named after the Ladini people of the Dolomites, N Italy.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Ladinien
        • Longobardian

          Name Origin

          Name derived fromthe term Longobardi, designating the territories controlled by the Lombards in Italy.

           

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          En bref

           

          Last, informal substage of the Ladinian.

           

          Age
          Ladinien tardif
        • Fassanian

          Name Origin

          Named after the Val di Fassa (Italia).

           

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          En bref

           

          First, informal substage of the Ladinian. Originally based on the Buchenstein Beds, it corresponds to a major transgressive interval.

           

          Age
          Ladinien précoce
      • Anisian (~ 246 Ma)

        Name Origin

        Named after the Enns (= Anisus) River at Grossreifling (Austrian Alps).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Nomenclatorial Remarks
        Virglorien supérieur
        En bref

         

        First stage of the Middle Triassic.

         

        Age
        Anisien
        • Illyrian

          Name Origin

          Named after the antique region Illyria (western part of the Balkan Peninsula).

           

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          En bref

           

          Last substage of the Anisian (Middle Triassic).

           

          Age
          Anisien tardif
        • Pelsonian

          Name Origin

          Named after Lake Pelso = Lake Balaton (Transdanubian region, Hungary.

           

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          En bref

           

          Third substage of the Anisian.

           

          Age
          Anisien
        • Bithynian

          Name Origin

          Named after the Roman province Bithynia (NW Turkey).

           

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          En bref

           

          Second substage of the Anisian (Middle Triassic).

           

          Age
          Anisien
        • Aegean

          Name Origin

          Named after the Aegean Sea (Greece).

           

          Rang
          Sous-Étage chronostratigraphique
          Statut
          terme local (informel)
          Nomenclatorial Remarks
          Ägäissches Meer = mer Égée
          En bref

           

          First substage of the Anisian (Middle Triassic).

           

          Age
          Anisien précoce
    • Early Triassic (~ 252 Ma)

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Induen
      • Olenekian (~ 249 Ma)

        Name Origin

        Olenek = Olenyok River, N Siberian Russia

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        In Europe the Olenekian is the time when the deposition of a large part of the Buntsandstein occured .

         

        Age
        Olénékien
      • Induan (~ 252 Ma)

        Name Origin

        Indus River in the Salt Range of Pakistan.

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Induen
  • Permian (298.90 +/-0.15 Ma)

    Origine du nom

    Named after the former Perm Governorate (Russia).

     

    Rang
    Période chronostratigraphique
    Statut
    terme formel valide
    • Lopingian (~260 Ma)

      Name Origin

      Named after the town of Leping = Loping (Jiangxi Province, China).

       

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Wuchiapingien
      • Changhsingian (~254 Ma)

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Changhsingien
      • Wuchiapingian (~260 Ma)

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Wuchiapingien
    • Guadalupian (~272 Ma)

      Name Origin

      Named after the Guadalupe Mountains (Texas, USA).

       

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Roadien
      • Capitanian (~265 Ma)

        Name Origin

        Named after the Capitan Reef in the Guadalupe Mountains (Texas, USA).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Capitanien
      • Wordian (~269 Ma)

        Name Origin

        Named after the Word Formation (Word Ranch, Glass Mountains) of the North American Permian Basin.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Wordien
      • Roadian (~272 Ma)

        Name Origin

        Named after the Road Canyon Member of the Word Formation (Texas, USA).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Roadien
    • Cisuralian (~299 Ma)

      Name Origin

      Named after the Cisural Mountains (western, European part of the Ural Mountains).

       

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      Age
      Assélien
      • Kungurian (~284 Ma)

        Name Origin

        Named after the town of Kungur (Russia), near Perm.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Kungurien
      • Artinskian (~290 Ma)

        Name Origin

        Named after the town of Artinsk = Arti (Russia), S Perm.

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        Stage of the Early Permian.

         

        Age
        Artinskien
      • Sakmarian (~295 Ma)

        Name Origin

        Named after the Sakmara River (Russia).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        Age
        Sakmarien
      • Asselian (~299 Ma)

        Name Origin

        Named after the Assel River, southern Ural Mountains (Kazakhstan / Bashkortostan).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        First stage of the Cisuralian and hence base of the Permian.

         

        Age
        Assélien
  • Carboniferous (358.9 +/-0.4 Ma)

    Rang
    Période chronostratigraphique
    Statut
    terme formel valide
    • Pennsylvanian (~323 Ma)

      Name Origin

      Named after the Pennsylvania state (USA).

       

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
      En bref

       

      Late Carboniferous epoch.

       

      Age
      Bashkirien
      • Late Pennsylvanian (~307 Ma)

        Rang
        Sous-époque chronostratigraphique
        Statut
        valide
        • Gzhelian (~304 Ma)

          Name Origin

          Named after the village of Gzhel = Gjel (Russia), 50 km SE Moscow.

           

          Rang
          Étage chronostratigraphique
          Statut
          terme formel valide
        • Kasimovian (~307 Ma)

          Name Origin

          Named after the town of Kasimov (Russia).

           

          Rang
          Étage chronostratigraphique
          Statut
          terme formel valide
      • Middle Pennsylvanian (~315 Ma)

        Rang
        Sous-époque chronostratigraphique
        Statut
        valide
      • Early Pennsylvanian (~323 Ma)

        Rang
        Sous-époque chronostratigraphique
        Statut
        valide
    • Mississippian (~359 Ma)

      Rang
      Époque chronostratigraphique
      Statut
      terme formel valide
  • Devonian (419.2 +/-3.2 Ma)

    Rang
    Période chronostratigraphique
    Statut
    terme formel valide
    • Late Devonien (382.7 +/-1.6 Ma)

      Rang
      Époque chronostratigraphique
      Statut
      terme informel
      Age
      Frasnien
      • Famennian (372.2 +/-1.6 Ma)

        Rang
        Étage chronostratigraphique
        Statut
        valide
        Age
        Dévonien tardif
      • Frasnian (382.7 +/-1.6 Ma)

        Name Origin

        Named after the town of Frasne (France), near Tournay.

         

        Rang
        Étage chronostratigraphique
        Statut
        valide
        Age
        Dévonien tardif
    • Middle Devonian (393.3 +/-1.2 Ma)

      Rang
      Époque chronostratigraphique
      Statut
      valide
      • Givetian (387.7 +/-0.8 Ma)

        Name Origin

        Named after the town of Givet (Ardennes, France).

         

        Rang
        Étage chronostratigraphique
        Statut
        terme formel valide
        En bref

         

        Second stage of the Middle Devonian, originally defined based on the Givet Limestone.

         

        Age
        Dévonien moyen
      • Eifelian (393.3 +/-1.2 Ma)

        Name Origin

        Named after the Eifel region (Prusse rhénane)

         

        Rang
        Étage chronostratigraphique
        Statut
        valide
        Age
        Dévonien moyen
    • Early Devonian (419.2 +/-3.2 Ma)

      Rang
      Époque chronostratigraphique
      Statut
      terme informel
      Age
      Lochkovien
      • Emsian (407.6 +/-2.6 Ma)

        Rang
        Étage chronostratigraphique
        Statut
        valide
        Age
        Dévonien précoce
      • Pragian (410.8 +/-2.8 Ma)

        Rang
        Étage chronostratigraphique
        Statut
        valide
        Age
        Dévonien précoce
      • Lochkovian (419.2 +/-3.2 Ma)

        Name Origin

        Named after the town of Lochkhow (Bohemia).

         

        Rang
        Étage chronostratigraphique
        Statut
        valide
        Age
        Dévonien précoce
  • Silurian (443.8 +/-1.5 Ma)

    Rang
    Période chronostratigraphique
    Statut
    terme formel valide
  • Ordovician (485.4 +/-1.9 Ma)

    Rang
    Période chronostratigraphique
    Statut
    terme formel valide
  • Cambrian (541.0 +/-1.0 Ma)

    Origine du nom

    Derived from the Latinised form of the Welsh name Cymru (Wales).

     

    Rang
    Période chronostratigraphique
    Statut
    terme formel valide
    Âge
    Cambrien
    En bref

     

    First system (and hence base) of the Paleozoic.

     

    Remarques nomenclatoriales
    From the Old Welsh combrog = compatriot. According to Geoffrey of Monmouth in the first part of his pseudohistory Historia Regum Britanniae, the Trojan Brutus had three sons among whom (having subdued Gogmagog) he divided his lands after landing in Britain. His elder son, Locrinus, received the land between the rivers Humber and Severn, which he called Loegria (a Latinization of the Welsh name Lloegr, "England"). His second son, Albanactus, got the lands beyond the Humber, which took from him the name of Albany (Yr Alban in Welsh: Scotland). The younger son, Camber, was bequeathed everything beyond the Severn, which was called after him "Cambria".
  • Proterozoic (2500 Ma)

    Rang
    Éon chronostratigraphique
    Statut
    terme formel valide
    Âge
    Protérozoïque
    En bref

     

    ... banded iron stones (2800-1800 Ma), tillites (2600-2100, 850 and 600 Ma) ...

     

    • Neoproterozoic (1000 Ma)

      Rang
      chronostratigraphie
      Statut
      valide
      En bref

       

      Last era of the Proterozoic.

       

      Age
      Protérozoïque
      • Ediacaran (~ 635 Ma)

        Name Origin

        Named after the Ediacara Hills (South Australia).

         

        Rang
        Période chronostratigraphique
        Statut
        valide
        En bref

         

        Last period of the Neoproterozoic (ca. 635-541 Ma), with a peculiar soft-bodied fauna.

         

        Age
        Néoprotérozoïque (= Protérozoïque tardif)
      • Cryogenian (~ 720 Ma)

        Name Origin

        From krýos and génesis (Greek), meaning "cold" resp. "birth".

         

        Rang
        chronostratigraphie
        Statut
        valide
        En bref

         

        Middle period of the Neoproterozoic, characterised by cold climatic conditions («Snowball Earth» ; Sturtian and Marinoan glaciations). Its base has been defined chronometrically.

         

        Age
        Néoprotérozoïque (= Protérozoïque tardif)
      • Tonian (1000 Ma)

        Name Origin

        From tóno (Greek), meaning "stretch".

         

        Rang
        chronostratigraphie
        Statut
        valide
        En bref

         

        First period of the Neoproterozoic. Its base has been defined chronometrically.

         

        Age
        Néoprotérozoïque (= Protérozoïque tardif)
    • Mesoproterozoic (1600 Ma)

      Rang
      chronostratigraphie
      Statut
      valide
      Age
      Protérozoïque
      • Stenian (1200 Ma)

        Name Origin

        From stenós (Greek), meaning "narrow".

         

        Rang
        chronostratigraphie
        Statut
        valide
        En bref

         

        Last period of the Mesoproterozoic, during which the supercontinent Rodinia assembled. Its base has been defined chronometrically.

         

        Age
        Mésoprotérozoïque (= Protérozoïque moyen)
      • Ectasian (1400 Ma)

        Name Origin

        From éktasis (Greek), meaning "extension".

         

        Rang
        chronostratigraphie
        Statut
        valide
        En bref

         

        Second period of the Mesoproterozoic. Its base has been defined chronometrically.

         

        Age
        Mésoprotérozoïque (= Protérozoïque moyen)
      • Calymmian (1600 Ma)

        Name Origin

        From kálymma (Greek), meaning "cover".

        Rang
        chronostratigraphie
        Statut
        valide
        En bref

         

        First period of the Mesoproterozoic. Its base has been defined chronometrically.

         

        Age
        Mésoprotérozoïque (= Protérozoïque moyen)
    • Paleoproterozoic (2500 Ma)

      Rang
      chronostratigraphie
      Statut
      valide
      Age
      Protérozoïque
      • Statherian (1800 Ma)

        Name Origin

        From statherós (Greek), meaning "stable, firm".

         

        Rang
        chronostratigraphie
        Statut
        valide
        En bref

         

        Last period of the Paleoproterozoic. Its base has been defined chronometrically.

         

        Age
        Paléoprotérozoïque (= Protérozoïque précoce)
      • Orosirian (2050 Ma)

        Name Origin

        From oroseirá (Greek), meaning "mountain range".

        Rang
        chronostratigraphie
        Statut
        valide
        En bref

         

        Third period of the Paleoproterozoic. Its base has been defined chronometrically.

         

        Age
        Paléoprotérozoïque (= Protérozoïque précoce)
      • Rhyacian (2300 Ma)

        Name Origin

        From rhýax (Greek), meaning "stream of lava".

         

        Rang
        chronostratigraphie
        Statut
        valide
        En bref

         

        Second period of the Paleoproterozoic : Bushveld Igneous Complex, Huronian (Makganyene) global glaciation. Its base has been defined chronometrically.

         

        Age
        Paléoprotérozoïque (= Protérozoïque précoce)
      • Siderian (2500 Ma)

        Name Origin

        From sídēros (Greek), meaning "iron".

         

        Rang
        chronostratigraphie
        Statut
        valide
        En bref

         

        First period of the Paleoproterozoic, characterised by a peak in the deposition of banded iron formations (BIFs). Its base has been defined chronometrically.

         

        Age
        Paléoprotérozoïque (= Protérozoïque précoce)
  • Archean (4000 Ma)

    Origine du nom

    archeo (Latin): old (see also Grand Canyon, Colorado).

    Rang
    Éon chronostratigraphique
    Statut
    terme formel valide
    Âge
    Archéen
    En bref

     

    ... composed of granulites, green belts, non-metamorphic sedimentary rocks (argilites, arkoses, sandstones, rarely carbonates and evaporites), as well as first banded iron-stones.

     

  • Hadean (~ 4600 Ma)

    Origine du nom

    Named after Hades, the Greek god of the underworld.

     

    Rang
    Éon chronostratigraphique
    Statut
    terme formel valide
    Âge
    Hadéen
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