| Country: |
Netherlands
|
| Locality: |
Heerlen, Emma Mine
|
| Layer: | Upper Westphalian |
| Lower Boundary: |
Duckmantian--Bolsovian, Westphal.B--C, 310.6 million years
|
| Upper Boundary: |
Bolsovian--Westphalian D,Westphal.C--D, 309.5 million years
|
| Georeference: |
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