Sample ejr93-532b
NavDat sample number 35788 · PYROCLASTIC-FLOW
Sample
| Sample ID | ejr93-532b |
|---|---|
| Rock name | PYROCLASTIC-FLOW |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | basal vitrophyre |
Location
| Latitude | 42.3292 |
|---|---|
| Longitude | -115.65 |
| Location | Bruneau-Jarbidge area |
| State / province | Idaho |
| Volcanic field | Cougar Point Tuff, unit XV? |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 10.45 | 9.405 | 11.495 |
Analyses
Glass
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 73.5 | WT% | EPMA | |
| TIO2 | 0.27 | WT% | EPMA | |
| AL2O3 | 11.5 | WT% | EPMA | |
| FE2O3T | 2.54 | WT% | EPMA | |
| MNO | 0.038 | WT% | EPMA | |
| MGO | 0.057 | WT% | EPMA | |
| CAO | 0.74 | WT% | EPMA | |
| BAO | 0.12 | WT% | EPMA | |
| NA2O | 2.8 | WT% | EPMA | |
| K2O | 5.8 | WT% | EPMA | |
| CL | 0.029 | WT% | EPMA | |
| F | 0.25 | WT% | EPMA | |
| H2O | 2.8 | WT% | EPMA | |
| TOTAL | 100.3 | WT% | EPMA | |
| BA | 1050 | PPM | XRF | |
| MN | 215 | PPM | XRF | |
| NB | 47 | PPM | XRF | |
| RB | 175 | PPM | XRF | |
| SR | 41 | PPM | XRF | |
| TI | 1940 | PPM | XRF | |
| Y | 59 | PPM | XRF | |
| ZN | 68 | PPM | XRF | |
| ZR | 460 | PPM | XRF | |
| LA | 90 | PPM | XRF | |
| ND | 70 | PPM | XRF | |
| TH | 25 | PPM | XRF | |
| CE | 155 | PPM | XRF |
References
- Perkins, Michael E; Nash, William P; Brown, Francis H; Fleck, RobertJ (1995) Fallout tuffs of Trapper Creek, Idaho; a record of Miocene explosivevolcanism in the Snake River plain volcanic province. Geological Society of America Bulletin, vol.107, no.12, pp.1484-1506,Dec 1995 doi:10.1130/0016-7606(1995)107<1484:FTOTCI>2.3.CO;2