Werrikooian Australian Stage
From 1.806 +/- 0.005 To 1 Ma
Start Defined By: Just above top of magnetic polarity chronozone C2n
(Olduvai) and the extinction level of calcareous nannofossil Discoaster
brouweri (base Zone CN13). Above are lowest occurrence of calcareous
nannofossil medium Gephyrocapsa spp. and extinction level of planktonic
foraminifer Globigerinoides extremus.
Start Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- Overlaps With --
Japanese Stage: Kechienjian (1.9 - 1.5)
Japanese Stage: Yuzanjian (1.5 - 0.75)
New Zealand Stage: Nukumaruan (1.96 - 1.1)
New Zealand Stage: Castlecliffian (1.1 - 0.01143)
New Zealand Stage: Okehuan (1.1 - 0.48)
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
Era: Cenozoic (65.5 - -5.5012e-005)
Period: Neogene (23.03 - -5.5012e-005)
Epoch: Pleistocene (1.806 - 0.01143)
ICS Stage: Early Pleistocene (1.806 - 0.781)
Californian Stage: Wheelerian (1.9 - 0.01143)
Informal Period: Pleistogene (1.806 - -5.5012e-005)
Informal Sub-era: Quaternary (1.806 - -5.5012e-005)
North American Stage: Irvingtonian (1.806 - 0.3)
-- Preceeded By --
Epoch: Pliocene (5.332 - 1.806)
Sub-Epoch: Late Pliocene (3.6 - 1.806)
ICS Stage: Gelasian (2.588 - 1.806)
Informal Sub-era: Tertiary (65.5 - 1.806)
North American Stage: Blancan (4.75 - 1.806)
|
