Sample B-93
NavDat sample number 3805
Sample
| Sample ID | B-93 |
|---|---|
| Rock type | VOLCANIC |
| Material | IGNEOUS |
| Comment | White airfall pumice, mostly 1-2 mm with a few lapilli to 2 cm ; unit is laminated, > 1.5 m thick, but base is concealed |
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 | 74.13 | WT% | WET | |
| NA2O | 3.53 | WT% | WET | |
| K2O | 4.83 | WT% | WET | |
| H2O | 2.55 | WT% | WET | |
| FEO | 0.72 | WT% | INAA | |
| MNO | 0.04 | WT% | INAA | |
| TIO2 | 0.08 | WT% | XRF | |
| CAO | 0.52 | WT% | XRF | |
| H2O_MINUS | 0.35 | WT% | WET | |
| LA | 20.3 | PPM | INAA | |
| CE | 45 | PPM | INAA | |
| ND | 20.2 | PPM | INAA | |
| SM | 3.84 | PPM | INAA | |
| EU | 0.043 | PPM | INAA | |
| TB | 0.6 | PPM | INAA | |
| DY | 4.04 | PPM | INAA | |
| YB | 2.64 | PPM | INAA | |
| LU | 0.38 | PPM | INAA | |
| RB | 183 | PPM | INAA | |
| CS | 7.2 | PPM | INAA | |
| BA | 11 | PPM | INAA | |
| TH | 21.12 | PPM | INAA | |
| U | 6.67 | PPM | INAA | |
| SC | 3.13 | PPM | INAA | |
| HF | 3.83 | PPM | INAA | |
| TA | 2.07 | PPM | INAA | |
| CR | 3.2 | PPM | INAA | |
| CO | 0.2 | PPM | INAA | |
| ZN | 41 | PPM | INAA | |
| MN | 274 | PPM | INAA | |
| W | 2.3 | PPM | INAA | |
| SB | 1.1 | PPM | INAA |