Sample SA-2
NavDat sample number 33092 · RHYOLITE
Sample
| Sample ID | SA-2 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 35.8698 |
|---|---|
| Longitude | -106.57 |
| Location | Valles Caldera |
| State / province | New Mexico |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 0.557 | 0.5013 | 0.6127 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 75.4 | WT% | XRF | |
| TIO2 | 0.15 | WT% | XRF | |
| AL2O3 | 13.16 | WT% | XRF | |
| FEO | 1.14 | WT% | XRF | |
| MNO | 0.06 | WT% | XRF | |
| MGO | 0.42 | WT% | XRF | |
| CAO | 0.7 | WT% | XRF | |
| NA2O | 3.86 | WT% | XRF | |
| K2O | 5.14 | WT% | XRF | |
| P2O5 | 0.02 | WT% | XRF | |
| LOI | 1.97 | WT% | XRF | |
| TOTAL | 100.42 | WT% | XRF | |
| RB | 187 | PPM | XRF | |
| SR | 53.5 | PPM | XRF | |
| Y | 47.2 | PPM | XRF | |
| ZR | 129 | PPM | XRF | |
| NB | 50.5 | PPM | XRF | |
| MO | 4.3 | PPM | XRF | |
| BA | 224 | PPM | XRF | |
| PB | 26 | PPM | XRF | |
| SC | 2.3 | PPM | INAA | |
| CR | -0.6 | PPM | INAA | |
| ZN | 23 | PPM | INAA | |
| CS | 5.4 | PPM | INAA | |
| LA | 42.7 | PPM | INAA | |
| CE | 88.6 | PPM | INAA | |
| ND | 28 | PPM | INAA | |
| SM | 5.8 | PPM | INAA | |
| EU | 0.299 | PPM | INAA | |
| TB | 1.12 | PPM | INAA | |
| YB | 5 | PPM | INAA | |
| LU | 0.761 | PPM | INAA | |
| HF | 5.1 | PPM | INAA | |
| TA | 4.9 | PPM | INAA | |
| TH | 23.7 | PPM | INAA | |
| U | 6.9 | PPM | INAA | |
| SR87_SR86 | 0.70512 | TIMS |
References
- Spell, Terry L; Kyle, Philip R; Thirlwall, Matthew F; Campbell, AndrewR (1993) Isotopic and geochemical constraints on the origin and evolution ofpostcollapse rhyolites in the Valles Caldera, New Mexico. Journal of Geophysical Research, vol.98, no.B11, pp.19,723-19,739, 10Nov 1993 doi:10.1029/93JB01569