Introduction

Geologic Timeline
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Geologic Timeline
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                         ICS General      ICS Specific    Russian-Kazakhian   
        542 +/- 0.3 Ma: Cambrian       -                - Nemakit-Daldynian
                534 Ma:                -                - Tommotian        
                530 Ma:                -                - Atdabanian       
                524 Ma:                -                - Botomian         
              518.5 Ma:                -                - Toyonian         
          513 +/- 2 Ma:                -                - Amgan            
                502 Ma:                -                - Mayan            
          501 +/- 2 Ma:                - Paibian        - Ayusokkanian     
                496 Ma:                -    no stage    -                  
              494.5 Ma:                -    no stage    - Sakian           
                493 Ma:                -    no stage    - Aksayan          
              491.5 Ma:                -    no stage    - Batyrbayan       
      488.3 +/- 1.7 Ma: Ordovician     - Tremadocian    -      use ICS     
      478.6 +/- 1.7 Ma:                - Arenig         -      use ICS     
      471.8 +/- 1.6 Ma:                - Ordovician III -      use ICS     
      468.1 +/- 1.6 Ma:                - Darriwilian    -      use ICS     
      460.9 +/- 1.6 Ma:                - Ordovician V   -      use ICS     
      455.8 +/- 1.6 Ma:                - Ordovician VI  -      use ICS     
      445.6 +/- 1.5 Ma:                - Hirnantian     -      use ICS     
      443.7 +/- 1.5 Ma: Silurian       - Rhuddanian     -      use ICS     
        439 +/- 1.8 Ma:                - Aeronian       -      use ICS     
        436 +/- 1.9 Ma:                - Telychian      -      use ICS     
      428.2 +/- 2.3 Ma:                - Sheinwoodian   -      use ICS     
      426.2 +/- 2.4 Ma:                - Homerian       -      use ICS     
      422.9 +/- 2.5 Ma:                - Gorstian       -      use ICS     
      421.3 +/- 2.6 Ma:                - Ludfordian     -      use ICS     
      418.7 +/- 2.7 Ma:                - Pridoli        -      use ICS     
        416 +/- 2.8 Ma: Devonian       - Lochkovian     -      use ICS     
      411.2 +/- 2.8 Ma:                - Praghian       -      use ICS     
        407 +/- 2.8 Ma:                - Emsian         -      use ICS     
      397.5 +/- 2.7 Ma:                - Eifelian       -      use ICS     
      391.8 +/- 2.7 Ma:                - Givetian       -      use ICS     
      385.3 +/- 2.6 Ma:                - Frasnian       -      use ICS     
      374.5 +/- 2.6 Ma:                - Famennian      -      use ICS     
      359.2 +/- 2.5 Ma: Carboniferous  - Tournaisian    -      use ICS     
      345.3 +/- 2.1 Ma:                - Visean         -      use ICS     
      326.4 +/- 1.6 Ma:                - Serpukhovian   -      use ICS     
      318.1 +/- 1.3 Ma:                - Bashkirian     -      use ICS     
              314.5 Ma:                -                - Cheremshanskian  
              313.4 Ma:                -                - Melekesskian     
      311.7 +/- 1.1 Ma:                - Moscovian      - Vereiskian       
              309.2 Ma:                -                - Kashirskian      
                308 Ma:                -                - Podolskian       
              307.2 Ma:                -                - Myachkovskian    
        306.5 +/- 1 Ma:                - Kasimovian     - Krevyakinskian   
                306 Ma:                -                - Chamovnicheskian 
                305 Ma:                -                - Dorogomilovksian 
      303.9 +/- 0.9 Ma:                - Gzhelian       - Klazminskian     
              300.5 Ma:                -                - Noginskian       
        299 +/- 0.8 Ma: Permian        - Asselian       -      use ICS     
 

Introduction

Geologic Timeline
(No Stages)

Geologic Timeline
(With Stages)

A-Z Stage List

Regional Information

Download Files