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Sample 797-19C
NavDat sample number 13851 · TUFF
Sample
| Sample ID | 797-19C |
|---|
| Rock name | TUFF |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 45.6917 |
|---|
| Longitude | -114.482 |
|---|
| State / province | Montana |
|---|
| Volcanic field | Challis epizonal plutonics and volcanics |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 48.9 |
|
48.3 |
49.5 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| RB | 221.4 | | PPM | XRF |
| SR | 226.5 | | PPM | XRF |
| SR87_SR86 | 0.70978 | | | TIMS |
References
- Criss, Robert E; Fleck, Robert J (1987) Petrogenesis, geochronology, and hydrothermal systems of the northern Idaho Batholith and adjacent areas based on (super 18?O/ (super 16?O, D/H, (super 87?Sr/ (super 86?Sr, K-Ar, and (super 40?Ar/ (super 39?Ar studies. U. S. Geological Survey Professional Paper, Report: P 1436, pp.95-137, 1987
