Sample 00L-29-B
NavDat sample number 45807 · PYROCLASTIC-FALL
Sample
| Sample ID | 00L-29-B |
|---|---|
| Rock name | PYROCLASTIC-FALL |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 38.302 |
|---|---|
| Longitude | -106.738 |
| Location | quarry, west side of dome |
| State / province | COLORADO |
| Formation | Nelson Mountain Caldera cycle, Nelson Mountain Tuff, upper tuff |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 26.5 | 25.9 | 27.1 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 73.6 | WT% | XRF | |
| TIO2 | 0.293577 | WT% | XRF | |
| AL2O3 | 13.5653 | WT% | XRF | |
| FE2O3 | 1.65011 | WT% | XRF | |
| MGO | 0.313824 | WT% | XRF | |
| CAO | 1.07308 | WT% | XRF | |
| NA2O | 3.3812 | WT% | XRF | |
| K2O | 5.27427 | WT% | XRF | |
| P2O5 | 0.101234 | WT% | XRF | |
| MNO | 0.0506168 | WT% | XRF | |
| LOI | 1.21 | WT% | XRF | |
| TOTAL | 99.3 | WT% | XRF | |
| ZN | 31 | PPM | XRF | |
| RB | 139 | PPM | XRF | |
| SR | 175 | PPM | XRF | |
| Y | 26 | PPM | XRF | |
| ZR | 187 | PPM | XRF | |
| NB | 19 | PPM | XRF | |
| PB | 20 | PPM | XRF | |
| TH | 11 | PPM | XRF | |
| BA | 847 | PPM | XRF | |
| LA | 55 | PPM | XRF | |
| CE | 97 | PPM | XRF | |
| ND | 42 | PPM | XRF | |
| CU | -2 | PPM | XRF | |
| V | 21 | PPM | XRF | |
| U | 4 | PPM | XRF | |
| CR | 8 | PPM | XRF | |
| CS | 6 | PPM | XRF | |
| GA | 17 | PPM | XRF | |
| MO | 2 | PPM | XRF | |
| NI | 4 | PPM | XRF |