Sample 421
NavDat sample number 7194 · PYROCLASTIC-FLOW
Sample
| Sample ID | 421 |
|---|---|
| Rock name | PYROCLASTIC-FLOW |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | andesitic |
Location
| Latitude | 39.3697 |
|---|---|
| Longitude | -105.702 |
| Location | Lost Park Road; Observatory rock quad |
| State / province | COLORADO |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 36.4 | 32.76 | 40.04 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 66.3 | WT% | RAPID_ROCK | |
| AL2O3 | 15.5 | WT% | RAPID_ROCK | |
| FE2O3 | 1.9 | WT% | RAPID_ROCK | |
| FEO | 2.3 | WT% | RAPID_ROCK | |
| MGO | 1 | WT% | RAPID_ROCK | |
| CAO | 3.4 | WT% | RAPID_ROCK | |
| NA2O | 3.4 | WT% | RAPID_ROCK | |
| K2O | 3.9 | WT% | RAPID_ROCK | |
| H2O_PLUS | 0.8 | WT% | RAPID_ROCK | |
| H2O_MINUS | 0.49 | WT% | RAPID_ROCK | |
| TIO2 | 0.79 | WT% | RAPID_ROCK | |
| P2O5 | 0.36 | WT% | RAPID_ROCK | |
| MNO | 0.05 | WT% | RAPID_ROCK | |
| CO2 | 0.01 | WT% | RAPID_ROCK | |
| F | 0.1 | WT% | RAPID_ROCK | |
| BA | 1100 | PPM | SPEC | |
| BE | 2.9 | PPM | SPEC | |
| CE | 180 | PPM | SPEC | |
| CO | 11 | PPM | SPEC | |
| CR | 19 | PPM | SPEC | |
| CU | 26 | PPM | SPEC | |
| EU | 3.3 | PPM | SPEC | |
| GA | 22 | PPM | SPEC | |
| LA | 97 | PPM | SPEC | |
| MN | 520 | PPM | SPEC | |
| NB | 17 | PPM | SPEC | |
| ND | 89 | PPM | SPEC | |
| NI | 10 | PPM | SPEC | |
| PB | 17 | PPM | SPEC | |
| SC | 15 | PPM | SPEC | |
| SR | 870 | PPM | SPEC | |
| V | 120 | PPM | SPEC | |
| Y | 29 | PPM | SPEC | |
| YB | 3.8 | PPM | SPEC | |
| ZN | 56 | PPM | SPEC | |
| ZR | 220 | PPM | SPEC |