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                                 Neogene Period
 
                  From 23.03 +/- 0.05 To -5.5012e-005 +/- 0 Ma
 
  Start Defined By:  Base of magnetic polarity chronozone C6Cn.2n; lowest 
     occurrence of planktonic foraminifer Paragloborotalia kugleri; near 
     extinction of calcareous nannofossil Reticulofenestra bisecta (base Zone 
     NN1).
  End Defined By:  Today (in Myr before 1950)
 
  Start Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
  Comment:  Alternative End is the start of the Pleistocene.  In such systems 
     the last portion of the Phanerozoic isoften refered to as the Pleistogene.
 
 -- Overlaps With --
  Australian Stage:     Longfordian (27.5 - 16.5)
  Californian Stage:    Zemorrian   (33.5 - 22)
  Informal Sub-era:     Tertiary    (65.5 - 1.806)
  North American Stage: Arikareean  (30.5 - 19)
 
 -- A Substage of --
  Eon: Phanerozoic (542 - -5.5012e-005)
  Era: Cenozoic    (65.5 - -5.5012e-005)
 
 -- Preceeded By --
  Period:            Paleogene      (65.5 - 23.03)
  Epoch:             Oligocene      (33.9 - 23.03)
  Sub-Epoch:         Late Oligocene (28.4 - 23.03)
  ICS Stage:         Chattian       (28.4 - 23.03)
  New Zealand Stage: Waitakian      (27 - 23.03)
 
 -- Contains the Following Epochs --
  Epoch: Miocene     (23.03 - 5.332)
  Epoch: Pliocene    (5.332 - 1.806)
  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.

Introduction

Geologic Timeline
(No Stages)

Geologic Timeline
(With Stages)

A-Z Stage List

Regional Information

Download Files


2003-2005 GeoWhen Database
Prepared By Robert A. Rohde


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