Country:
|
France
|
Province:
|
Nord-Pas-de-Calais
|
Locality:
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Valenciennes,Houillères
|
Layer:
|
Vall.henkei horizon, pl.D, E |
Lower Boundary:
|
Alportian--Kinderscoutian [ALP--KIN], 317 million years
|
Upper Boundary:
|
GBY R1a3--R1a4 (R.subretic.--todmorden.), 316.4 million years
|
Georeference:
|
|