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Sample 97L-5
NavDat sample number 45981 · PYROCLASTIC FALL
Sample
| Sample ID | 97L-5 |
|---|
| Rock name | PYROCLASTIC FALL |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.681 |
|---|
| Longitude | -106.845 |
|---|
| Location | Lake Humphreys |
|---|
| State / province | COLORADO |
|---|
| Formation | South River Caldera Cycle, Silver River volcanics, Wason Park Tuff, intracaldera |
|---|
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 | 63.87 | | WT% | XRF |
| TIO2 | 0.698782 | | WT% | XRF |
| AL2O3 | 17.8189 | | WT% | XRF |
| FE2O3 | 4.57246 | | WT% | XRF |
| MGO | 0.669413 | | WT% | XRF |
| CAO | 3.72785 | | WT% | XRF |
| NA2O | 3.89292 | | WT% | XRF |
| K2O | 4.05597 | | WT% | XRF |
| P2O5 | 0.251156 | | WT% | XRF |
| MNO | 0.1114 | | WT% | XRF |
| LOI | 1.25 | | WT% | XRF |
| TOTAL | 99.665 | | WT% | XRF |
| RB | 116 | | PPM | XRF |
| SR | 665 | | PPM | XRF |
| Y | 27 | | PPM | XRF |
| ZR | 302 | | PPM | XRF |
| NB | 14 | | PPM | XRF |
| BA | 1200 | | PPM | XRF |
