GeoWhen Database  

Introduction

Geologic Timeline
(No Stages)

Geologic Timeline
(With Stages)

A-Z Stage List

Regional Information

Download Files

  
                            Llandeilo General Stage
                        (Llandeilian, Miaopoan, Chazyan)
 
                          From 464 To 460.9 +/- 1.6 Ma
 
  End Defined By:  Graptolite, lowest occurrence of Nemagraptus gracilis.
 
  Start Based On:  Gradstein and Ogg, "A Phanerozoic time scale", _Episodes_, 
     v.19, no.1&2., 1996.
  End Based On:  Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
 
 -- Overlaps With --
  North American Stage: White Rockian (471.8 - 462)
  North American Stage: Mohawkian     (462 - 451)
 
 -- A Substage of --
  Eon:       Phanerozoic       (542 - -5.5012e-005)
  Era:       Paleozoic         (542 - 251)
  Period:    Ordovician        (488.3 - 443.7)
  Epoch:     Middle Ordovician (471.8 - 460.9)
  ICS Stage: Darriwilian       (468.1 - 460.9)
 
 -- Preceeded By --
  General Stage: Llanvirn (471.8 - 464)
 
 -- Followed By --
  Epoch:            Late Ordovician (460.9 - 443.7)
  ICS Stage:        Ordovician V    (460.9 - 455.8)
  Australian Stage: Gisbornian      (460.9 - 456)
  Chinese Stage:    Baotan          (460.9 - 454.5)
  European Stage:   Aurelucian      (460.9 - 457)
  General Stage:    Caradoc         (460.9 - 449)
  Regional Stage:   Costonian       (460.9 - 459)
 

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.