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                             Erqiaoan Chinese Stage
 
                          From 209 To 199.6 +/- 0.6 Ma
 
  End Defined By:  Near lowest occurrence of smooth Psiloceras planorbis 
     ammonite group.
 
  End Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
 -- Overlaps With --
  ICS Stage:         Norian   (216.5 - 203.6)
  New Zealand Stage: Otamitan (218 - 206)
  Regional Stage:    Sevatian (211 - 203.6)
 
 -- A Substage of --
  Eon:    Phanerozoic   (542 - -5.5012e-005)
  Era:    Mesozoic      (251 - 65.5)
  Period: Triassic      (251 - 199.6)
  Epoch:  Late Triassic (228 - 199.6)
 
 -- Preceeded By --
  Chinese Stage: Huobachengian (219 - 209)
 
 -- Followed By --
  Period:            Jurassic       (199.6 - 145.5)
  Epoch:             Early Jurassic (199.6 - 175.6)
  ICS Stage:         Hettangian     (199.6 - 196.5)
  New Zealand Stage: Aratauran      (199.6 - 188)
 
 -- Contains the Following Stages --
  ICS Stage:         Rhaetian  (203.6 - 199.6)
  New Zealand Stage: Warepan   (206 - 203)
  New Zealand Stage: Otapirian (203 - 199.6)
 

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.