Sample B-73
NavDat sample number 3813 · RHYOLITE
Sample
| Sample ID | B-73 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Rim of Clark Canyon, elevation 7850'. Pumice from thick welded vitric zone near caldera rim. |
Location
| Latitude | 37.7838 |
|---|---|
| Longitude | -118.924 |
| State / province | California |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 0.76 | 0.759 | 0.761 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| LA | 54.2 | PPM | INAA | |
| CE | 87.1 | PPM | INAA | |
| ND | 28.2 | PPM | INAA | |
| SM | 2.79 | PPM | INAA | |
| EU | 0.373 | PPM | INAA | |
| TB | 0.26 | PPM | INAA | |
| DY | 1.5 | PPM | INAA | |
| YB | 1.09 | PPM | INAA | |
| LU | 0.14 | PPM | INAA | |
| RB | 101 | PPM | INAA | |
| CS | 2.2 | PPM | INAA | |
| BA | 411 | PPM | INAA | |
| TH | 12.66 | PPM | INAA | |
| U | 2.72 | PPM | INAA | |
| SC | 1.81 | PPM | INAA | |
| HF | 3.74 | PPM | INAA | |
| TA | 0.85 | PPM | INAA | |
| CR | 3.4 | PPM | INAA | |
| CO | 0.93 | PPM | INAA | |
| ZN | 27 | PPM | INAA | |
| MN | 162 | PPM | INAA | |
| W | 0.8 | PPM | INAA | |
| SB | 0.45 | PPM | INAA |