Sample 93
NavDat sample number 3529 · GABBRO
Sample
| Sample ID | 93 |
|---|---|
| Rock name | GABBRO |
| Rock type | PLUTONIC |
| Composition | MAFIC |
| Material | IGNEOUS |
| Comment | alk-gabbro dike |
Location
| Latitude | 47.1785 |
|---|---|
| Longitude | -111.813 |
| Location | north side of Missouri River, 100 ft west of bridge; *NOTE: bridge does not appear on all topographic maps* |
| State / province | Montana |
| Volcanic field | Adel Mountain Volcanics |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 74 | 73 | 76 |