Sample brv93-431a
NavDat sample number 35799 · PYROCLASTIC-FALL
Sample
| Sample ID | brv93-431a |
|---|---|
| Rock name | PYROCLASTIC-FALL |
| 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 XI |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 11.31 | 10.179 | 12.441 |
Analyses
Glass
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 73.4 | WT% | EPMA | |
| TIO2 | 0.2 | WT% | EPMA | |
| AL2O3 | 11.1 | WT% | EPMA | |
| FE2O3T | 1.94 | WT% | EPMA | |
| MNO | 0.03 | WT% | EPMA | |
| MGO | 0.05 | WT% | EPMA | |
| CAO | 0.65 | WT% | EPMA | |
| BAO | 0.06 | WT% | EPMA | |
| NA2O | 2.7 | WT% | EPMA | |
| K2O | 6 | WT% | EPMA | |
| CL | 0.01 | WT% | EPMA | |
| F | 0.07 | WT% | EPMA | |
| H2O | 3.7 | WT% | EPMA | |
| TOTAL | 99.9 | WT% | EPMA | |
| BA | 480 | PPM | XRF | |
| MN | 185 | PPM | XRF | |
| NB | 39 | PPM | XRF | |
| RB | 191 | PPM | XRF | |
| SR | 21 | PPM | XRF | |
| TI | 1180 | PPM | XRF | |
| Y | 56 | PPM | XRF | |
| ZN | 42 | PPM | XRF | |
| ZR | 325 | PPM | XRF | |
| LA | 75 | PPM | XRF | |
| ND | 65 | PPM | XRF | |
| TH | 32 | PPM | XRF | |
| CE | 180 | 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