Sample S-7
NavDat sample number 33089 · RHYOLITE
Sample
| Sample ID | S-7 |
|---|---|
| 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 |
|---|---|---|---|---|---|
| 0.8 | 0.72 | 0.88 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 76.6 | WT% | XRF | |
| TIO2 | 0.09 | WT% | XRF | |
| AL2O3 | 12.91 | WT% | XRF | |
| FEO | 0.87 | WT% | XRF | |
| MNO | 0.08 | WT% | XRF | |
| MGO | 0.1 | WT% | XRF | |
| CAO | 0.37 | WT% | XRF | |
| NA2O | 4.21 | WT% | XRF | |
| K2O | 4.74 | WT% | XRF | |
| P2O5 | 0.02 | WT% | XRF | |
| LOI | 1.71 | WT% | XRF | |
| TOTAL | 100.33 | WT% | XRF | |
| RB | 269 | PPM | XRF | |
| SR | 6.3 | PPM | XRF | |
| Y | 80 | PPM | XRF | |
| ZR | 122 | PPM | XRF | |
| NB | 92.4 | PPM | XRF | |
| MO | 5.9 | PPM | XRF | |
| BA | 59 | PPM | XRF | |
| PB | 34 | PPM | XRF | |
| SC | 1.5 | PPM | INAA | |
| CR | -0.4 | PPM | INAA | |
| ZN | 33 | PPM | INAA | |
| CS | 9.4 | PPM | INAA | |
| LA | 33.4 | PPM | INAA | |
| CE | 74.3 | PPM | INAA | |
| ND | 26 | PPM | INAA | |
| SM | 7 | PPM | INAA | |
| EU | 0.105 | PPM | INAA | |
| TB | 1.73 | PPM | INAA | |
| YB | 8.17 | PPM | INAA | |
| LU | 1.231 | PPM | INAA | |
| HF | 6.7 | PPM | INAA | |
| TA | 7.8 | PPM | INAA | |
| TH | 30.9 | PPM | INAA | |
| U | 10.8 | PPM | INAA | |
| SR87_SR86 | 0.70616 | TIMS | ||
| ND143_ND144 | 0.512424 | 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