Sample B-140
NavDat sample number 3824 · RHYOLITE
Sample
| Sample ID | B-140 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Upper Chidago Canyon, jst above narrows. White pumice lapilli from remnant of non-welded lower part of ash-flow, here banked in against basalt. |
Location
| Latitude | 37.6306 |
|---|---|
| Longitude | -118.526 |
| 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 |
|---|---|---|---|---|
| LA | 22.6 | PPM | INAA | |
| CE | 50 | PPM | INAA | |
| ND | 21 | PPM | INAA | |
| SM | 3.81 | PPM | INAA | |
| EU | 0.051 | PPM | INAA | |
| TB | 0.49 | PPM | INAA | |
| DY | 3.78 | PPM | INAA | |
| YB | 2.43 | PPM | INAA | |
| LU | 0.33 | PPM | INAA | |
| RB | 176 | PPM | INAA | |
| CS | 5.6 | PPM | INAA | |
| BA | 16 | PPM | INAA | |
| TH | 20.92 | PPM | INAA | |
| U | 6.27 | PPM | INAA | |
| SC | 3.07 | PPM | INAA | |
| HF | 3.53 | PPM | INAA | |
| TA | 2.09 | PPM | INAA | |
| CR | 2.6 | PPM | INAA | |
| CO | 0.28 | PPM | INAA | |
| ZN | 34 | PPM | INAA | |
| MN | 266 | PPM | INAA | |
| W | 3.2 | PPM | INAA | |
| SB | 1.2 | PPM | INAA |