Sample 78
NavDat sample number 3525 · GABBRO
Sample
| Sample ID | 78 |
|---|---|
| Rock name | GABBRO |
| Rock type | PLUTONIC |
| Composition | MAFIC |
| Material | IGNEOUS |
| Comment | dike intrusion of alk-gabbro |
Location
| Latitude | 47.1033 |
|---|---|
| Longitude | -111.773 |
| Location | ridge crest, 0.2 miles NW of SE corner of section |
| State / province | Montana |
| Volcanic field | Adel Mountain Volcanics |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 74 | 73 | 76 |