Cryogenian Period
From 850 +/- 0 To 630 +5/-30 Ma
Start Defined By: Fixed Date
End Defined By: Termination of Varanger (or Marinoan) glaciation, and
distinctive C-13 change.
Start Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
End Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- Overlaps With --
Chinese Stage: Jinningian (1750 - 800)
Chinese Stage: Sinian (800 - 542)
General Stage: Riphean (1400 - 800)
General Stage: Vendian (650 - 542)
General Substage: Karatau (1100 - 800)
-- A Substage of --
Time: Precambrian (4567.17 - 542)
Eon: Proterozoic (2500 - 542)
Era: Neoproterozoic (1000 - 542)
Australian Stage: Adelaidean (1300 - 542)
North American Stage: Hadrynian (850 - 542)
South African Stage: Namibian (900 - 542)
-- Preceeded By --
Period: Tonian (1000 - 850)
North American Stage: Helikian (1600 - 850)
-- Followed By --
Period: Ediacaran (630 - 542)
General Stage: Wonokan (630 - 570)
-- Contains the Following Stages --
General Stage: Sturtian (800 - 650)
General Stage: Varangian (650 - 630)
General Stage: Smalfjord (650 - 640)
General Stage: Mortesnes (640 - 630)
|
