Sample B-83
NavDat sample number 3798
Sample
| Sample ID | B-83 |
|---|---|
| Rock type | VOLCANIC |
| Material | IGNEOUS |
| Comment | White airfall pumice unit, 4.5 m thick, overlying lacustrine siltstone and overlain by non-welded base of ash-flow. Pumice mostly <5 mm diameter, with a few lapilli to 2 cm |
Location
| Latitude | 37.4017 |
|---|---|
| Longitude | -118.48 |
| 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 | 188 | PPM | XRF | |
| SR | 5 | PPM | XRF | |
| Y | 22 | PPM | XRF | |
| ZR | 91 | PPM | XRF | |
| NB | 18 | PPM | XRF | |
| BA | 37.6 | PPM | XRF | |
| BA | 26.84 | PPM | XRF | |
| LA | 21.2 | PPM | INAA | |
| CE | 46.1 | PPM | INAA | |
| ND | 18.7 | PPM | INAA | |
| SM | 3.61 | PPM | INAA | |
| EU | 0.051 | PPM | INAA | |
| TB | 0.55 | PPM | INAA | |
| DY | 3.78 | PPM | INAA | |
| YB | 2.55 | PPM | INAA | |
| LU | 0.34 | PPM | INAA | |
| RB | 180 | PPM | INAA | |
| CS | 5.4 | PPM | INAA | |
| BA | 17 | PPM | INAA | |
| TH | 20.13 | PPM | INAA | |
| U | 6.46 | PPM | INAA | |
| SC | 2.88 | PPM | INAA | |
| HF | 3.39 | PPM | INAA | |
| TA | 1.97 | PPM | INAA | |
| CR | 2.6 | PPM | INAA | |
| CO | 0.28 | PPM | INAA | |
| ZN | 39 | PPM | INAA | |
| MN | 278 | PPM | INAA | |
| W | 2.4 | PPM | INAA | |
| SB | 1.2 | PPM | INAA |