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Sample 85L-18A
NavDat sample number 45795 · PYROCLASTIC-FLOW
Sample
| Sample ID | 85L-18A |
|---|
| Rock name | PYROCLASTIC-FLOW |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.94 |
|---|
| Longitude | -107.065 |
|---|
| Location | Miners Creek, Snow Mesa |
|---|
| State / province | COLORADO |
|---|
| Formation | Nelson Mountain Caldera cycle, Nelson Mountain Tuff, upper main welded |
|---|
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 | 61.91 | | WT% | XRF |
| TIO2 | 0.751252 | | WT% | XRF |
| AL2O3 | 17.4108 | | WT% | XRF |
| FE2O3 | 6.30443 | | WT% | XRF |
| MGO | 1.29946 | | WT% | XRF |
| CAO | 4.20295 | | WT% | XRF |
| NA2O | 3.77657 | | WT% | XRF |
| K2O | 3.44155 | | WT% | XRF |
| P2O5 | 0.304562 | | WT% | XRF |
| MNO | 0.0812165 | | WT% | XRF |
| LOI | 1.49 | | WT% | XRF |
| TOTAL | 99.48 | | WT% | XRF |
| ZN | 42 | | PPM | XRF |
| RB | 91 | | PPM | XRF |
| SR | 713 | | PPM | XRF |
| Y | 20 | | PPM | XRF |
| ZR | 185 | | PPM | XRF |
| NB | 10 | | PPM | XRF |
| PB | 39 | | PPM | XRF |
| NI | 13 | | PPM | XRF |
