Sample 88/9-8
NavDat sample number 41084 · RHYOLITE
Sample
| Sample ID | 88/9-8 |
|---|---|
| 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 | 76.6 | WT% | XRF | |
| TIO2 | 0.22 | WT% | XRF | |
| AL2O3 | 12.2 | WT% | XRF | |
| FEO | 1.5 | WT% | XRF | |
| MNO | 0.07 | WT% | XRF | |
| MGO | 0.27 | WT% | XRF | |
| CAO | 1.13 | WT% | XRF | |
| NA2O | 3.5 | WT% | XRF | |
| K2O | 3.8 | WT% | XRF | |
| P2O5 | 0.03 | WT% | XRF | |
| RB | 128 | PPM | XRF | |
| SR | 110 | PPM | XRF | |
| Y | 29 | PPM | XRF | |
| ZR | 96 | PPM | XRF | |
| NB | 15 | PPM | XRF | |
| CO | 6 | PPM | XRF | |
| LA | 36.5 | PPM | INAA | |
| CE | 57 | PPM | INAA | |
| ND | 19 | PPM | INAA | |
| SM | 4.4 | PPM | INAA | |
| EU | 0.75 | PPM | INAA | |
| TB | 0.57 | PPM | INAA | |
| YB | 2.46 | PPM | INAA | |
| LU | 0.39 | PPM | INAA | |
| SC | 2.8 | PPM | INAA | |
| CS | 4.7 | PPM | INAA | |
| HF | 4.3 | PPM | INAA | |
| BA | 1434 | PPM | INAA | |
| TH | 14.1 | PPM | INAA | |
| U | 4 | PPM | INAA | |
| PB | 26.5 | PPM | MS | |
| SR87_SR86 | 0.70656 | MS | ||
| SR87_SR86 | 0.70496 | MS | ||
| ND143_ND144 | 0.512598 | MS | ||
| ND143_ND144_INITIAL | 0.512571 | MS |
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