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                            Ordovician VI ICS Stage
 
                     From 455.8 +/- 1.6 To 445.6 +/- 1.5 Ma
 
  Start Defined By:  Potentially near first appearance of the graptolite 
     Diplacanthograptus caudatus
  End Defined By:  Potentially at base of the Normalograptus extraordinarius-N. 
     ojsuensis graptolite biozone.
 
  Start Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
  End Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
  Comment:  Official ICS name not yet decided.
 
 -- Overlaps With --
  Australian Stage:     Eastonian    (456 - 450)
  Australian Stage:     Bolindian    (450 - 443.7)
  Chinese Stage:        Baotan       (460.9 - 454.5)
  European Stage:       Burrellian   (457 - 455)
  General Stage:        Caradoc      (460.9 - 449)
  General Stage:        Ashgill      (449 - 443.7)
  North American Stage: Mohawkian    (462 - 451)
  North American Stage: Cincinnatian (451 - 443.7)
  Regional Stage:       Shermanian   (457 - 454)
  Regional Stage:       Longvillian  (457 - 455)
 
 -- A Substage of --
  Eon:    Phanerozoic     (542 - -5.5012e-005)
  Era:    Paleozoic       (542 - 251)
  Period: Ordovician      (488.3 - 443.7)
  Epoch:  Late Ordovician (460.9 - 443.7)
 
 -- Preceeded By --
  ICS Stage: Ordovician V (460.9 - 455.8)
 
 -- Followed By --
  ICS Stage: Hirnantian (445.6 - 443.7)
 
 -- Contains the Following Stages --
  Chinese Stage:  Linxiangian   (454.5 - 449)
  European Stage: Cheneyan      (455 - 452)
  European Stage: Streffordian  (452 - 449)
  European Stage: Pusgillian    (449 - 447.5)
  European Stage: Cautleyan     (447.5 - 446.5)
  European Stage: Rawtheyan     (446.5 - 445.6)
  Regional Stage: Mayvillian    (453 - 447.5)
  Regional Stage: Onnian        (453 - 449)
  Regional Stage: Actonian      (454 - 453)
  Regional Stage: Edenian       (454 - 449)
  Regional Stage: Marshbrookian (455 - 454)
  Regional Stage: Richmondian   (449 - 445.6)
 

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.