LocNo: 3531upper Johns Valley Shale
| Country: |
USA
|
| Province: |
Arkansas, Scott Co.
|
| Locality: |
Boles, near
|
| Layer: | upper Johns Valley Shale |
| Lower Boundary: |
U Halian--Bloydian, Brentwood base, 313 million years
|
| Upper Boundary: |
U Morrowan (Bloydian)--Atokan[MOR--ATO], 310.4 million years
|
| Georeference: |