Sample 87-221
NavDat sample number 16945 · PYROCLASTIC-FALL
Sample
| Sample ID | 87-221 |
|---|---|
| Rock name | PYROCLASTIC-FALL |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 37.865 |
|---|---|
| Longitude | -106.801 |
| Location | Antelope Park |
| State / province | COLORADO |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 27.1 | 27 | 27.2 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 71.0592 | WT% | XRF | |
| TIO2 | 0.404221 | WT% | XRF | |
| AL2O3 | 15.1487 | WT% | XRF | |
| FE2O3 | 1.72898 | WT% | XRF | |
| MGO | 0.869075 | WT% | XRF | |
| CAO | 1.49778 | WT% | XRF | |
| NA2O | 3.85001 | WT% | XRF | |
| K2O | 5.79009 | WT% | XRF | |
| P2O5 | 0.101055 | WT% | XRF | |
| MNO | 0.0808442 | WT% | XRF | |
| LOI | 1.7 | WT% | XRF | |
| TOTAL | 100.53 | WT% | XRF | |
| ZN | 48 | PPM | XRF | |
| RB | 160 | PPM | XRF | |
| SR | 231 | PPM | XRF | |
| Y | 33 | PPM | XRF | |
| ZR | 256 | PPM | XRF | |
| BA | 978 | PPM | XRF | |
| LA | 55 | PPM | XRF | |
| CE | 87 | PPM | XRF | |
| CU | 3 | PPM | XRF | |
| V | 17 | PPM | XRF | |
| TH | 18.5 | PPM | INAA | |
| U | 5.1 | PPM | INAA | |
| LA | 60.8 | PPM | INAA | |
| CE | 110 | PPM | INAA | |
| ND | 35.7 | PPM | INAA | |
| SM | 7.78 | PPM | INAA | |
| EU | 1.18 | PPM | INAA | |
| GD | 3.5 | PPM | INAA | |
| TB | 1.08 | PPM | INAA | |
| YB | 3.3 | PPM | INAA | |
| LU | 0.39 | PPM | INAA | |
| TA | 1.51 | PPM | INAA | |
| HF | 4.32 | PPM | INAA | |
| SC | 5.2 | PPM | INAA |