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Sample 97L-9
NavDat sample number 45982 · PYROCLASTIC FALL
Sample
| Sample ID | 97L-9 |
|---|
| Rock name | PYROCLASTIC FALL |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.686 |
|---|
| Longitude | -106.844 |
|---|
| 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 | 62.47 | | WT% | XRF |
| TIO2 | 0.719824 | | WT% | XRF |
| AL2O3 | 17.7448 | | WT% | XRF |
| FE2O3 | 4.8418 | | WT% | XRF |
| MGO | 1.20918 | | WT% | XRF |
| CAO | 3.88644 | | WT% | XRF |
| NA2O | 3.88238 | | WT% | XRF |
| K2O | 4.00319 | | WT% | XRF |
| P2O5 | 0.272091 | | WT% | XRF |
| MNO | 0.060916 | | WT% | XRF |
| LOI | 1.49 | | WT% | XRF |
| TOTAL | 99.093 | | WT% | XRF |
| RB | 120 | | PPM | XRF |
| SR | 692 | | PPM | XRF |
| Y | 25 | | PPM | XRF |
| ZR | 294 | | PPM | XRF |
| NB | 16 | | PPM | XRF |
| BA | 1240 | | PPM | XRF |
