Sample B-75
NavDat sample number 3796 · RHYOLITE
Sample
| Sample ID | B-75 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Elevation 7350', pumice from lowest exposure of non-welded base of thick ash-flow section |
Location
| Latitude | 37.7819 |
|---|---|
| Longitude | -118.92 |
| 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 |
|---|---|---|---|---|
| RB | 187 | PPM | XRF | |
| SR | 19 | PPM | XRF | |
| Y | 24 | PPM | XRF | |
| ZR | 84 | PPM | XRF | |
| NB | 36 | PPM | XRF | |
| BA | 9.84 | PPM | XRF | |
| BA | 23.8 | PPM | XRF | |
| LA | 23.6 | PPM | INAA | |
| CE | 51.6 | PPM | INAA | |
| ND | 20.3 | PPM | INAA | |
| SM | 3.6 | PPM | INAA | |
| EU | 0.061 | PPM | INAA | |
| TB | 0.51 | PPM | INAA | |
| DY | 3.55 | PPM | INAA | |
| YB | 2.4 | PPM | INAA | |
| LU | 0.38 | PPM | INAA | |
| RB | 192 | PPM | INAA | |
| CS | 5.6 | PPM | INAA | |
| BA | 23 | PPM | INAA | |
| TH | 19.16 | PPM | INAA | |
| U | 6.05 | PPM | INAA | |
| SC | 2.87 | PPM | INAA | |
| HF | 3.53 | PPM | INAA | |
| TA | 1.88 | PPM | INAA | |
| CR | 3.5 | PPM | INAA | |
| CO | 0.27 | PPM | INAA | |
| ZN | 33 | PPM | INAA | |
| MN | 241 | PPM | INAA | |
| W | 2.3 | PPM | INAA | |
| SB | 1.1 | PPM | INAA |