Sample 28B
NavDat sample number 54610 · TUFF
Sample
| Sample ID | 28B |
|---|---|
| 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 | 76.78 | WT% | XRF | |
| TIO2 | 0.16 | WT% | XRF | |
| AL2O3 | 13.02 | WT% | XRF | |
| FEO | 1.82 | WT% | XRF | |
| MNO | 0.03 | WT% | XRF | |
| MGO | -0.38 | WT% | XRF | |
| CAO | 0.29 | WT% | XRF | |
| NA2O | 4.37 | WT% | XRF | |
| K2O | 4.8 | WT% | XRF | |
| P2O5 | -0.08 | WT% | XRF | |
| CU | -5 | PPM | XRF | |
| ZN | 82 | PPM | XRF | |
| GA | 20 | PPM | XRF | |
| RB | 213 | PPM | XRF | |
| SR | 29 | PPM | XRF | |
| Y | 34 | PPM | XRF | |
| ZR | 354 | PPM | XRF | |
| NB | 30 | PPM | XRF | |
| CS | -5 | PPM | XRF | |
| BA | 67 | PPM | XRF | |
| PB | 37 | PPM | XRF | |
| TH | 33 | PPM | XRF | |
| LA | 60 | PPM | XRF | |
| CE | 113 | PPM | XRF | |
| PR | -8 | PPM | XRF | |
| ND | 52 | PPM | XRF | |
| SM | -8 | PPM | XRF |