Sample B-48
NavDat sample number 3793 · RHYOLITE
Sample
| Sample ID | B-48 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Pink pumice from lowest exposure of non-welded ash-flow at Pleasant Valley Dam |
Location
| Latitude | 37.4135 |
|---|---|
| Longitude | -118.523 |
| 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 |
|---|---|---|---|---|
| SIO2 | 74.42 | WT% | WET | |
| MGO | 0.08 | WT% | WET | |
| CAO | 0.47 | WT% | WET | |
| NA2O | 3.48 | WT% | WET | |
| K2O | 4.63 | WT% | WET | |
| H2O | 1.95 | WT% | WET | |
| TOTAL | 98.8 | WT% | WET | |
| RB | 207 | PPM | XRF | |
| SR | 6 | PPM | XRF | |
| Y | 23 | PPM | XRF | |
| ZR | 85 | PPM | XRF | |
| NB | 10 | PPM | XRF | |
| BA | 34.5 | PPM | XRF | |
| BA | 22.49 | PPM | XRF | |
| TIO2 | 0.08 | WT% | INAA | |
| AL2O3 | 12.45 | WT% | INAA | |
| FEO | 0.69 | WT% | INAA | |
| MNO | 0.03 | WT% | INAA | |
| H2O_MINUS | 0.49 | WT% | WET | |
| LA | 20 | PPM | INAA | |
| CE | 44.1 | PPM | INAA | |
| ND | 19.1 | PPM | INAA | |
| SM | 3.66 | PPM | INAA | |
| EU | 0.042 | PPM | INAA | |
| TB | 0.55 | PPM | INAA | |
| DY | 3.74 | PPM | INAA | |
| YB | 2.6 | PPM | INAA | |
| LU | 0.34 | PPM | INAA | |
| RB | 195 | PPM | INAA | |
| CS | 5.8 | PPM | INAA | |
| BA | 13 | PPM | INAA | |
| TH | 20.52 | PPM | INAA | |
| U | 6.69 | PPM | INAA | |
| SC | 2.97 | PPM | INAA | |
| HF | 3.78 | PPM | INAA | |
| TA | 2.06 | PPM | INAA | |
| CR | 2.3 | PPM | INAA | |
| CO | 0.25 | PPM | INAA | |
| ZN | 30 | PPM | INAA | |
| MN | 261 | PPM | INAA | |
| W | 2.8 | PPM | INAA | |
| SB | 1 | PPM | INAA |