Sample AR1
NavDat sample number 54535 · TUFF
Sample
| Sample ID | AR1 |
|---|---|
| Rock name | TUFF |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | American River, California, lower phase about 60 m thick. AR1 is devitrified, from near the base of the tuff on the north wall of Caples Creek canyon SW 1/4, NW 1/4, see. 23, T10N R16E). |
Location
| Latitude | 38.6986 |
|---|---|
| Longitude | -120.177 |
| State / province | California |
| Location comment | Nine Hill Tuff |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 28.72 | 26.34 | 31.1 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 72.97 | WT% | XRF | |
| TIO2 | 0.21 | WT% | XRF | |
| AL2O3 | 12.86 | WT% | XRF | |
| FEO | 1.02 | WT% | XRF | |
| MNO | 0.03 | WT% | XRF | |
| MGO | -0.43 | WT% | XRF | |
| CAO | 0.45 | WT% | XRF | |
| NA2O | 3.83 | WT% | XRF | |
| K2O | 5.01 | WT% | XRF | |
| P2O5 | -0.08 | WT% | XRF | |
| ZN | 91 | PPM | XRF | |
| GA | 24 | PPM | XRF | |
| RB | 198 | PPM | XRF | |
| SR | 22 | PPM | XRF | |
| Y | 37 | PPM | XRF | |
| ZR | 407 | PPM | XRF | |
| NB | 31 | PPM | XRF | |
| CS | -5 | PPM | XRF | |
| BA | 281 | PPM | XRF | |
| PB | 34 | PPM | XRF | |
| TH | 29 | PPM | XRF | |
| LA | 61 | PPM | XRF | |
| CE | 123 | PPM | XRF | |
| PR | 20 | PPM | XRF | |
| ND | 52 | PPM | XRF | |
| SM | 8 | PPM | XRF |