Sample 87-DJ-202
NavDat sample number 33979 · TUFF
Sample
| Sample ID | 87-DJ-202 |
|---|---|
| Rock name | TUFF |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Poco Canyon caldera |
Location
| Latitude | 39.625 |
|---|---|
| Longitude | -118.25 |
| State / province | Nevada |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 24.5 | 23.7 | 25.3 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 73.5 | WT% | WDXRF | |
| AL2O3 | 13.1 | WT% | WDXRF | |
| FEO | 0 | WT% | WET | |
| FE2O3 | 2.01 | WT% | WDXRF | |
| MGO | -0.1 | WT% | WDXRF | |
| CAO | 0.4 | WT% | WDXRF | |
| NA2O | 3.3 | WT% | WDXRF | |
| K2O | 5 | WT% | WDXRF | |
| TIO2 | 0.2 | WT% | WDXRF | |
| P2O5 | 0.04 | WT% | WDXRF | |
| MNO | 0.04 | WT% | WDXRF | |
| H2O_PLUS | 0.54 | WT% | WET | |
| H2O_MINUS | 0.68 | WT% | WDXRF | |
| CO2 | 0.12 | WT% | WET | |
| TOTAL | 98.93 | WT% | WDXRF | |
| NB | 26 | PPM | EDXRF | |
| RB | 172 | PPM | EDXRF | |
| SR | 44 | PPM | EDXRF | |
| ZR | 265 | PPM | EDXRF | |
| Y | 26 | PPM | EDXRF | |
| BA | 340 | PPM | EDXRF | |
| CE | 122 | PPM | EDXRF | |
| LA | 62 | PPM | EDXRF | |
| CU | -20 | PPM | EDXRF | |
| NI | -20 | PPM | EDXRF | |
| ZN | 76 | PPM | EDXRF | |
| CR | -20 | PPM | EDXRF |