Name of Stratigraphic unit and correlation with Global Stage:

Treffgarn Andesites
Tremadocian
Tremadocian
1

 

Name refers to the following Stratigraphic units:

Name Qualifier Location
Treffgarn Andesites Formation Wales
 

 

Correlation is based on:

Reference Name used in Referenced Opinion
Fortey, R. A. et al. 2000: A Revised Correlation of Ordovician Rocks in the British Isles

 

Complete list of all Relations (Opinions):

Name 1 Name 2 Strat qualifier Locality Oldest Youngest Stage count
Total: 3
Lithostratigraphy(3)
Treffgarn Andesites Araneograptus murrayi Biostratigraphy United Kingdom Tremadocian Tremadocian 1
Treffgarn Andesites Migneintian Regional Standard United Kingdom Tremadocian Tremadocian 1
Treffgarn Andesites Monograptus sedgwickii Biostratigraphy United Kingdom Tremadocian Tremadocian 1