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Sample 97L-4
NavDat sample number 45980 · PYROCLASTIC FALL
Sample
| Sample ID | 97L-4 |
|---|
| Rock name | PYROCLASTIC FALL |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.668 |
|---|
| Longitude | -106.855 |
|---|
| 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 | 70.15 | | WT% | XRF |
| TIO2 | 0.424957 | | WT% | XRF |
| AL2O3 | 16.05 | | WT% | XRF |
| FE2O3 | 1.89029 | | WT% | XRF |
| MGO | 0.49254 | | WT% | XRF |
| CAO | 1.38239 | | WT% | XRF |
| NA2O | 3.80208 | | WT% | XRF |
| K2O | 5.22953 | | WT% | XRF |
| P2O5 | -0.05 | | WT% | XRF |
| MNO | 0.0204798 | | WT% | XRF |
| LOI | 2.33 | | WT% | XRF |
| TOTAL | 99.447 | | WT% | XRF |
| RB | 142 | | PPM | XRF |
| SR | 304 | | PPM | XRF |
| Y | 19 | | PPM | XRF |
| ZR | 308 | | PPM | XRF |
| NB | 13 | | PPM | XRF |
| BA | 1240 | | PPM | XRF |
