Quaternary Informal Sub-era
 
                      From 1.806 To -5.5012e-005 +/- 0 Ma
 
  End Defined By:  Today (in Myr before 1950)
 
  Comment:  The Quaternary is not a formally recognized ICS chronostratigraphic 
     unit, however it is traditionally associated with the Holocene and 
     Pleistocene.  An alternative definition sets the Quaternary as the start 
     of the cycle of glacials and interglacials circa 3.0 Ma.  Still other 
     definitions set the boundary between 3.6 and 2.6 Ma.  In these various 
     cases the Quaternary includes part of the Pliocene.
 
 -- Overlaps With --
  Californian Stage: Wheelerian  (1.9 - 0.01143)
  Japanese Stage:    Kechienjian (1.9 - 1.5)
  New Zealand Stage: Nukumaruan  (1.96 - 1.1)
 
 -- A Substage of --
  Eon:    Phanerozoic (542 - -5.5012e-005)
  Era:    Cenozoic    (65.5 - -5.5012e-005)
  Period: Neogene     (23.03 - -5.5012e-005)
 
 -- 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)
 
 -- Contains the Following Epochs --
  Epoch: Pleistocene (1.806 - 0.01143)
  Epoch: Holocene    (0.01143 - -5.5012e-005)
 

This page was automatically generated from the GeoWhen database (version 1.1.0).  Please read the introduction regarding the accuracy and reliability of this information.  Comments, corrections, and additions can be sent to geowhen@robertrohde.com.  References to published academic literature are preferred.

© 2003-2005 GeoWhen Database
Prepared By Robert A. Rohde

This page was last updated on Tuesday, January 18, 2005.