Sample 88/1-2
NavDat sample number 41067 · DACITE
Sample
| Sample ID | 88/1-2 |
|---|---|
| Rock name | DACITE |
| 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 | 66.1 | WT% | XRF | |
| TIO2 | 0.54 | WT% | XRF | |
| AL2O3 | 15.7 | WT% | XRF | |
| FEO | 3.2 | WT% | XRF | |
| MNO | 0.19 | WT% | XRF | |
| MGO | 1.06 | WT% | XRF | |
| CAO | 1.61 | WT% | XRF | |
| NA2O | 3.1 | WT% | XRF | |
| K2O | 7.2 | WT% | XRF | |
| P2O5 | 0.13 | WT% | XRF | |
| RB | 324 | PPM | XRF | |
| SR | 200 | PPM | XRF | |
| Y | 58 | PPM | XRF | |
| ZR | 201 | PPM | XRF | |
| NB | 16 | PPM | XRF | |
| CO | 12 | PPM | XRF | |
| LA | 25.2 | PPM | INAA | |
| CE | 52 | PPM | INAA | |
| ND | 23.1 | PPM | INAA | |
| SM | 4.8 | PPM | INAA | |
| EU | 1.23 | PPM | INAA | |
| TB | 0.53 | PPM | INAA | |
| DY | 4.1 | PPM | INAA | |
| YB | 2.3 | PPM | INAA | |
| LU | 0.43 | PPM | INAA | |
| SC | 7.4 | PPM | INAA | |
| CS | 6.2 | PPM | INAA | |
| HF | 5.5 | PPM | INAA | |
| BA | 1370 | PPM | INAA | |
| TH | 7.7 | PPM | INAA | |
| U | 3.35 | PPM | INAA | |
| PB | 20.3 | PPM | MS | |
| SR87_SR86 | 0.706549 | MS | ||
| SR87_SR86 | 0.70481 | MS | ||
| ND143_ND144 | 0.51261 | MS | ||
| ND143_ND144_INITIAL | 0.512586 | MS | ||
| PB206_PB204 | 18.927 | MS | ||
| PB207_PB204 | 15.648 | MS | ||
| PB208_PB204 | 38.751 | 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