Sample 31B2
NavDat sample number 54613 · TUFF
Sample
| Sample ID | 31B2 |
|---|---|
| Rock name | TUFF |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 38.2983 |
|---|---|
| Longitude | -120.702 |
| State / province | California |
| Location comment | Tuff of Chili Gulch |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 19.91 | 19.21 | 20.61 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 75.85 | WT% | XRF | |
| TIO2 | 0.16 | WT% | XRF | |
| AL2O3 | 14.53 | WT% | XRF | |
| FEO | 2.07 | WT% | XRF | |
| MNO | 0.03 | WT% | XRF | |
| MGO | 0.43 | WT% | XRF | |
| CAO | 0.33 | WT% | XRF | |
| NA2O | 3.55 | WT% | XRF | |
| K2O | 4.94 | WT% | XRF | |
| P2O5 | -0.08 | WT% | XRF | |
| CU | 8 | PPM | XRF | |
| ZN | 104 | PPM | XRF | |
| GA | 22 | PPM | XRF | |
| RB | 195 | PPM | XRF | |
| SR | 24 | PPM | XRF | |
| Y | 34 | PPM | XRF | |
| ZR | 366 | PPM | XRF | |
| NB | 36 | PPM | XRF | |
| CS | -5 | PPM | XRF | |
| BA | 78 | PPM | XRF | |
| PB | 39 | PPM | XRF | |
| TH | 36 | PPM | XRF | |
| LA | 46 | PPM | XRF | |
| CE | 82 | PPM | XRF | |
| PR | 12 | PPM | XRF | |
| ND | 38 | PPM | XRF | |
| SM | -8 | PPM | XRF |