Sample 88/1-12
NavDat sample number 41073 · RHYOLITE
Sample
| Sample ID | 88/1-12 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 27.5 |
|---|---|
| Longitude | -107.83 |
| Location | El Divisadero |
| State / province | Chihuahua |
| Country | MEXICO |
| Location comment | W Chihuahua |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 30 | 27 | 33 |
Analyses
Whole Rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 72.4 | WT% | XRF | |
| TIO2 | 0.36 | WT% | XRF | |
| AL2O3 | 14.6 | WT% | XRF | |
| FEO | 1.4 | WT% | XRF | |
| MNO | 0.06 | WT% | XRF | |
| MGO | 0.2 | WT% | XRF | |
| CAO | 0.55 | WT% | XRF | |
| NA2O | 4.3 | WT% | XRF | |
| K2O | 5.2 | WT% | XRF | |
| P2O5 | 0.02 | WT% | XRF | |
| RB | 158 | PPM | XRF | |
| SR | 120 | PPM | XRF | |
| Y | 50 | PPM | XRF | |
| ZR | 390 | PPM | XRF | |
| NB | 19 | PPM | XRF | |
| CO | 7 | PPM | XRF | |
| LA | 82 | PPM | INAA | |
| CE | 85 | PPM | INAA | |
| ND | 69 | PPM | INAA | |
| SM | 10.9 | PPM | INAA | |
| EU | 2.39 | PPM | INAA | |
| TB | 1.26 | PPM | INAA | |
| DY | 8.3 | PPM | INAA | |
| YB | 4.2 | PPM | INAA | |
| LU | 0.61 | PPM | INAA | |
| SC | 5.8 | PPM | INAA | |
| CS | 11.7 | PPM | INAA | |
| HF | 8.3 | PPM | INAA | |
| BA | 1400 | PPM | INAA | |
| TH | 14.8 | PPM | INAA | |
| U | 4.6 | PPM | INAA |
References
- Albrecht, Achim; Goldstein, Steven L (2000) Effects of basement composition and age on silicic magmas across an accreted terrane-Precambrian crust boundary, Sierra Madre Occidental, Mexico. Journal of South American Earth Sciences, vol.13, no.3, pp.255-273, Jul 2000 doi:10.1016/S0895-9811(00)00014-6