LocNo: 3297Beech Creek Limestone
| Country: |
USA
|
| Province: |
Illinois, St.Clair Co.
|
| Locality: |
Hecker
|
| Layer: | Beech Creek Limestone |
| Lower Boundary: |
UIL Beech Creek Fm. base, 327.4 million years
|
| Upper Boundary: |
UIL Beech Creek Fm. top, 326.4 million years
|
| Georeference: |