GeoWhen Database  

Introduction

Geologic Timeline
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Geologic Timeline
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                                 Tonian Period
 
                        From 1000 +/- 0 To 850 +/- 0 Ma
 
  Start Defined By:  Fixed Date
  End Defined By:  Fixed Date
 
  Start Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
  End Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
 -- Overlaps With --
  South African Stage: Mokolian (2050 - 900)
  South African Stage: Namibian (900 - 542)
 
 -- A Substage of --
  Time:                 Precambrian    (4567.17 - 542)
  Eon:                  Proterozoic    (2500 - 542)
  Era:                  Neoproterozoic (1000 - 542)
  Australian Stage:     Adelaidean     (1300 - 542)
  Chinese Stage:        Jinningian     (1750 - 800)
  General Stage:        Riphean        (1400 - 800)
  General Substage:     Karatau        (1100 - 800)
  North American Stage: Helikian       (1600 - 850)
 
 -- Preceeded By --
  Era:    Mesoproterozoic (1600 - 1000)
  Period: Stenian         (1200 - 1000)
 
 -- Followed By --
  Period:               Cryogenian (850 - 630)
  North American Stage: Hadrynian  (850 - 542)
 

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.