LocNo: 170Marshall Sandstone
| Country: |
USA
|
| Province: |
Michigan, Calhoun County
|
| Locality: |
Marshall
|
| Layer: | Marshall Sandstone |
| Lower Boundary: |
UMI Marshall Sdst.II base, 353 million years
|
| Upper Boundary: |
UMI Marshall Sdst.I top, 339 million years
|
| Georeference: |