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Sample HM144
NavDat sample number 21524 · PHONOLITE
Sample
| Sample ID | HM144 |
|---|
| Rock name | PHONOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
Location
| Latitude | 47.4333 |
|---|
| Longitude | -110.533 |
|---|
| State / province | Montana |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
| 52 |
|
51 |
53 |
|
|
References
- Anonymous (1991) Eocene potassic magmatism in the Highwood Mountains, Montana; petrology, geochemistry, and tectonic implications. Journal of Geophysical Research, B, Solid Earth and Planets, vol.96, no.8, pp.13,237-13,260, 30 Jul 1991