Sample B-94
NavDat sample number 3806
Sample
| Sample ID | B-94 |
|---|---|
| Rock type | VOLCANIC |
| Material | IGNEOUS |
| Comment | White pumice from basal 2.5 m of non-welded zone of ash-flow. Overlies laminated airfall pumice (B-93) and is overlain by pink non-welded ash-flow (B-95). Flocks to 15 cm diameter |
Location
| Latitude | 37.5463 |
|---|---|
| Longitude | -118.593 |
| 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 | 74.4 | WT% | WET | |
| NA2O | 3.59 | WT% | WET | |
| K2O | 4.91 | WT% | WET | |
| H2O | 2.2 | WT% | WET | |
| TOTAL | 98.5 | WT% | WET | |
| AL2O3 | 11.89 | WT% | INAA | |
| FEO | 0.68 | WT% | INAA | |
| MNO | 0.04 | WT% | INAA | |
| TIO2 | 0.07 | WT% | XRF | |
| CAO | 0.45 | WT% | XRF | |
| H2O_MINUS | 0.25 | WT% | WET | |
| LA | 19.2 | PPM | INAA | |
| CE | 44.7 | PPM | INAA | |
| ND | 17.5 | PPM | INAA | |
| SM | 3.56 | PPM | INAA | |
| EU | 0.045 | PPM | INAA | |
| TB | 0.57 | PPM | INAA | |
| DY | 3.74 | PPM | INAA | |
| YB | 2.6 | PPM | INAA | |
| LU | 0.37 | PPM | INAA | |
| RB | 179 | PPM | INAA | |
| CS | 7.2 | PPM | INAA | |
| BA | 10 | PPM | INAA | |
| TH | 20.45 | PPM | INAA | |
| U | 6.55 | PPM | INAA | |
| SC | 3 | PPM | INAA | |
| HF | 4.22 | PPM | INAA | |
| TA | 2.07 | PPM | INAA | |
| CR | 3 | PPM | INAA | |
| CO | 0.4 | PPM | INAA | |
| ZN | 38 | PPM | INAA | |
| MN | 264 | PPM | INAA | |
| W | 3.3 | PPM | INAA | |
| SB | 1.1 | PPM | INAA |