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Sample 85L-18G
NavDat sample number 45798 · PYROCLASTIC-FALL
Sample
| Sample ID | 85L-18G |
|---|
| Rock name | PYROCLASTIC-FALL |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.938 |
|---|
| Longitude | -107.061 |
|---|
| Location | Miners Creek, Snow Mesa |
|---|
| State / province | COLORADO |
|---|
| Formation | Nelson Mountain Caldera cycle, Nelson Mountain Tuff, upper nonwelded |
|---|
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 | 69.6 | | WT% | XRF |
| TIO2 | 0.380305 | | WT% | XRF |
| AL2O3 | 15.685 | | WT% | XRF |
| FE2O3 | 2.62102 | | WT% | XRF |
| MGO | 1.12036 | | WT% | XRF |
| CAO | 1.95292 | | WT% | XRF |
| NA2O | 3.39191 | | WT% | XRF |
| K2O | 4.7384 | | WT% | XRF |
| P2O5 | 0.113064 | | WT% | XRF |
| MNO | 0.0411141 | | WT% | XRF |
| LOI | 2.7 | | WT% | XRF |
| TOTAL | 99.64 | | WT% | XRF |
| ZN | 54 | | PPM | XRF |
| RB | 88 | | PPM | XRF |
| SR | 338 | | PPM | XRF |
| Y | 24 | | PPM | XRF |
| ZR | 241 | | PPM | XRF |
| NB | 17 | | PPM | XRF |
| PB | 47 | | PPM | XRF |
| NI | 44 | | PPM | XRF |
