Sample R20
NavDat sample number 54557 · TUFF
Sample
| Sample ID | R20 |
|---|---|
| Rock name | TUFF |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Red Rock Canyon, Washoe Co., Nevada [SE 1/4, NE 1/4, NW 1/4, SE 1/4, Sec 32 T23N, R18E] Stratigraphic section of the Nine Hill Tuff. Devitrified densely welded lower phase tuff |
Location
| Latitude | 39.9081 |
|---|---|
| Longitude | -119.952 |
| State / province | Nevada |
| Location comment | Red Rock Canyon Stratigraphic Sequence |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 22.78 | 19.21 | 26.34 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 74.59 | WT% | XRF | |
| TIO2 | 0.21 | WT% | XRF | |
| AL2O3 | 14.26 | WT% | XRF | |
| FEO | 1.29 | WT% | XRF | |
| MNO | 0.04 | WT% | XRF | |
| MGO | -0.38 | WT% | XRF | |
| CAO | 0.59 | WT% | XRF | |
| NA2O | 3.22 | WT% | XRF | |
| K2O | 5.05 | WT% | XRF | |
| P2O5 | -0.09 | WT% | XRF | |
| CU | -5 | PPM | XRF | |
| ZN | 139 | PPM | XRF | |
| GA | 24 | PPM | XRF | |
| RB | 204 | PPM | XRF | |
| SR | 28 | PPM | XRF | |
| Y | 41 | PPM | XRF | |
| ZR | 406 | PPM | XRF | |
| NB | 31 | PPM | XRF | |
| CS | -5 | PPM | XRF | |
| BA | 146 | PPM | XRF | |
| PB | 34 | PPM | XRF | |
| TH | 32 | PPM | XRF | |
| LA | 67 | PPM | XRF | |
| CE | 127 | PPM | XRF | |
| PR | 15 | PPM | XRF | |
| ND | 54 | PPM | XRF | |
| SM | -8 | PPM | XRF |