Sample RDS06
NavDat sample number 36731 · DACITE
Sample
| Sample ID | RDS06 |
|---|---|
| Rock name | DACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | High Y dacite |
Location
| Latitude | 27.9 |
|---|---|
| Longitude | -104.267 |
| Location | La Olivina xenolith locality |
| State / province | CHIHUAHUA |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 31.8 | 29.6 | 34 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 66.4 | WT% | XRF | |
| TIO2 | 1 | WT% | XRF | |
| AL2O3 | 16.2 | WT% | XRF | |
| FEO | 4.41 | WT% | XRF | |
| MNO | 0.06 | WT% | AAS | |
| MGO | 1.19 | WT% | XRF | |
| CAO | 2.7 | WT% | XRF | |
| NA2O | 2.81 | WT% | AAS | |
| K2O | 4.92 | WT% | XRF | |
| P2O5 | 0.33 | WT% | XRF | |
| LOI | 1.12 | WT% | XRF | |
| TOTAL | 97.55 | WT% | XRF | |
| RB | 135 | PPM | XRF | |
| SR | 307 | PPM | XRF | |
| BA | 1606 | PPM | XRF | |
| LA | 69 | PPM | XRF | |
| NB | 34 | PPM | XRF | |
| ZR | 486 | PPM | XRF | |
| Y | 56 | PPM | XRF | |
| CE | 137.6 | PPM | MS-ID | |
| ND | 64.5 | PPM | MS-ID | |
| SM | 12.74 | PPM | MS-ID | |
| EU | 3.52 | PPM | MS-ID | |
| GD | 11.18 | PPM | MS-ID | |
| DY | 9.8 | PPM | MS-ID | |
| ER | 5.4 | PPM | MS-ID | |
| YB | 4.84 | PPM | MS-ID | |
| SR87_SR86 | 0.705467 | MS | ||
| SR87_SR86_INITIAL | 0.704901 | MS | ||
| ND143_ND144 | 0.51266 | MS |
References
- McDowell, Fred W; Mauger, Richard L (1994) K-Ar and U-Pb zircon chronology of Late Cretaceous and Tertiary magmatism in central Chihuahua State, Mexico; with Suppl. Data 9403. Geological Society of America Bulletin, vol.106, no.1, pp.118-132, Jan 1994 doi:10.1130/0016-7606(1994)106<0118:KAAUPZ>2.3.CO;2