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                          Adelaidean Australian Stage
 
                          From 1300 To 542 +/- 0.3 Ma
 
  End Defined By:  Trace fossil, lowest occurrence of Treptichnus (Phycodes) 
     pedum.  Near base of negative carbon-isotope excursion.
 
  End Based On:  Amthor et. al., "Extinction of Cloudinia and Namacalathus at 
     the Precambrian-Cambrian boundary in Oman", _Geology_, v. 31, p. 431-434, 
     2003.
 
 -- Overlaps With --
  Era:                  Mesoproterozoic (1600 - 1000)
  Period:               Ectasian        (1400 - 1200)
  Chinese Stage:        Jinningian      (1750 - 800)
  General Stage:        Riphean         (1400 - 800)
  General Substage:     Yurmatian       (1375 - 1100)
  North American Stage: Helikian        (1600 - 850)
  South African Stage:  Mokolian        (2050 - 900)
 
 -- A Substage of --
  Time: Precambrian (4567.17 - 542)
  Eon:  Proterozoic (2500 - 542)
 
 -- Preceeded By --
  Australian Stage: Carpentarian (1800 - 1300)
 
 -- Followed By --
  Eon:                     Phanerozoic       (542 - -5.5012e-005)
  Era:                     Paleozoic         (542 - 251)
  Period:                  Cambrian          (542 - 488.3)
  Epoch:                   Early Cambrian    (542 - 513)
  Chinese Stage:           Meishuchuan       (542 - 532)
  Russian-Kazakhian Stage: Nemakit-Daldynian (542 - 534)
 
 -- Contains the Following Eras --
  Era: Neoproterozoic (1000 - 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.