Sample DA-8
NavDat sample number 33086 · RHYOLITE
Sample
| Sample ID | DA-8 |
|---|---|
| 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 |
|---|---|---|---|---|---|
| 0.973 | 0.8757 | 1.0703 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 77.4 | WT% | XRF | |
| TIO2 | 0.1 | WT% | XRF | |
| AL2O3 | 12.65 | WT% | XRF | |
| FEO | 0.78 | WT% | XRF | |
| MNO | 0.04 | WT% | XRF | |
| MGO | 0.08 | WT% | XRF | |
| CAO | 0.3 | WT% | XRF | |
| NA2O | 4.04 | WT% | XRF | |
| K2O | 4.61 | WT% | XRF | |
| P2O5 | 0.01 | WT% | XRF | |
| LOI | 0.21 | WT% | XRF | |
| TOTAL | 100.14 | WT% | XRF | |
| RB | 197 | PPM | XRF | |
| SR | 7.3 | PPM | XRF | |
| Y | 38.4 | PPM | XRF | |
| ZR | 114 | PPM | XRF | |
| NB | 55.6 | PPM | XRF | |
| MO | 5.6 | PPM | XRF | |
| BA | 32 | PPM | XRF | |
| PB | 61 | PPM | XRF | |
| SC | 1.4 | PPM | INAA | |
| CR | -0.6 | PPM | INAA | |
| ZN | 15 | PPM | INAA | |
| CS | 5.3 | PPM | INAA | |
| LA | 31.4 | PPM | INAA | |
| CE | 73.7 | PPM | INAA | |
| ND | 22 | PPM | INAA | |
| SM | 5 | PPM | INAA | |
| EU | 0.221 | PPM | INAA | |
| TB | 0.94 | PPM | INAA | |
| YB | 4.01 | PPM | INAA | |
| LU | 0.593 | PPM | INAA | |
| HF | 6 | PPM | INAA | |
| TA | 5.1 | PPM | INAA | |
| TH | 22.9 | PPM | INAA | |
| U | 7.5 | PPM | INAA | |
| SR87_SR86 | 0.70713 | 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