Sample BFC149
NavDat sample number 39474 · PYROCLASTIC-FALL
Sample
| Sample ID | BFC149 |
|---|---|
| Rock name | PYROCLASTIC-FALL |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | -107.044 |
|---|---|
| Longitude | -37.438 |
| Location | W of upper Omaha Cr |
| State / province | COLORADO |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 27.93 | 27.75 | 28.11 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 67.91 | WT% | XRF | |
| TIO2 | 0.461 | WT% | XRF | |
| AL2O3 | 15.43 | WT% | XRF | |
| FE2O3 | 3.65 | WT% | XRF | |
| MGO | 1.11 | WT% | XRF | |
| CAO | 2.97 | WT% | XRF | |
| NA2O | 3.53 | WT% | XRF | |
| K2O | 4.51 | WT% | XRF | |
| P2O5 | 0.082 | WT% | XRF | |
| MNO | 0.181 | WT% | XRF | |
| LOI | 0.77 | WT% | XRF | |
| TOTAL | 99.834 | WT% | XRF | |
| ZN | 62 | PPM | XRF | |
| RB | 123 | PPM | XRF | |
| SR | 440 | PPM | XRF | |
| Y | 22 | PPM | XRF | |
| ZR | 189.5 | PPM | XRF | |
| NB | 16.8 | PPM | XRF | |
| PB | 17.3 | PPM | XRF | |
| TH | 12.8 | PPM | XRF | |
| BA | 836 | PPM | XRF | |
| LA | 43 | PPM | XRF | |
| CE | 75 | PPM | XRF | |
| ND | 28 | PPM | XRF | |
| CU | 10 | PPM | XRF | |
| V | 54 | PPM | XRF | |
| CR | 6 | PPM | XRF | |
| GA | 16.7 | PPM | XRF | |
| NI | 5 | PPM | XRF |