GeoWhen Database  

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                               Toarcian ICS Stage
 
                       From 183 +/- 1.5 To 175.6 +/- 2 Ma
 
  Start Defined By:  Ammonite, near lowest occurrence of a diversified 
     Eodactylites ammonite fauna; correlates with the NW European Paltus 
     horizon.
  End Defined By:  Ammonite, lowest occurrence of Leioceras genus.
 
  Start Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
  End Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
 -- A Substage of --
  Eon:               Phanerozoic    (542 - -5.5012e-005)
  Era:               Mesozoic       (251 - 65.5)
  Period:            Jurassic       (199.6 - 145.5)
  Epoch:             Early Jurassic (199.6 - 175.6)
  New Zealand Stage: Uruoan         (188 - 169)
 
 -- Preceeded By --
  ICS Stage: Pliensbachian (189.6 - 183)
 
 -- Followed By --
  Epoch:         Middle Jurassic (175.6 - 161.2)
  ICS Stage:     Aalenian        (175.6 - 171.6)
  Chinese Stage: Xintiangouan    (175.6 - 167)
 

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.