Sample 88/3-9
NavDat sample number 41075 · RHYOLITE
Sample
| Sample ID | 88/3-9 |
|---|---|
| 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 | 70.8 | WT% | XRF | |
| TIO2 | 0.39 | WT% | XRF | |
| AL2O3 | 15.2 | WT% | XRF | |
| FEO | 2.2 | WT% | XRF | |
| MNO | 0.02 | WT% | XRF | |
| MGO | 0.76 | WT% | XRF | |
| CAO | 2.15 | WT% | XRF | |
| NA2O | 3.5 | WT% | XRF | |
| K2O | 3.8 | WT% | XRF | |
| P2O5 | 0.08 | WT% | XRF | |
| RB | 123 | PPM | XRF | |
| SR | 266 | PPM | XRF | |
| Y | 24 | PPM | XRF | |
| ZR | 167 | PPM | XRF | |
| NB | 17 | PPM | XRF | |
| CO | 9 | PPM | XRF | |
| LA | 37.5 | PPM | INAA | |
| CE | 92.4 | PPM | INAA | |
| SM | 4.9 | PPM | INAA | |
| EU | 0.84 | PPM | INAA | |
| TB | 0.19 | PPM | INAA | |
| DY | 2.38 | PPM | INAA | |
| YB | 2.08 | PPM | INAA | |
| SC | 4.4 | PPM | INAA | |
| CS | 4.31 | PPM | INAA | |
| HF | 6.2 | PPM | INAA | |
| BA | 1340 | PPM | INAA | |
| TH | 12.2 | 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