Sample RDS54
NavDat sample number 36751 · IGNIMBRITE
Sample
| Sample ID | RDS54 |
|---|---|
| Rock name | IGNIMBRITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Low Y lower ignimbrite |
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 |
|---|---|---|---|---|---|
| 39.9 | 39 | 40.8 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 69.9 | WT% | XRF | |
| TIO2 | 0.43 | WT% | XRF | |
| AL2O3 | 15.5 | WT% | XRF | |
| FEO | 3.12 | WT% | XRF | |
| MGO | 1.04 | WT% | XRF | |
| CAO | 2.66 | WT% | XRF | |
| NA2O | 3.55 | WT% | AAS | |
| K2O | 3.64 | WT% | XRF | |
| P2O5 | 0.12 | WT% | XRF | |
| LOI | 3.64 | WT% | XRF | |
| TOTAL | 99.77 | WT% | XRF | |
| RB | 62 | PPM | XRF | |
| SR | 412 | PPM | XRF | |
| BA | 1239 | PPM | XRF | |
| LA | 38 | PPM | XRF | |
| NB | 10 | PPM | XRF | |
| ZR | 190 | PPM | XRF | |
| Y | 11 | PPM | XRF | |
| NI | 7 | PPM | XRF | |
| SC | 7 | PPM | XRF | |
| PB | 10.7 | PPM | ICPMS | |
| TH | 10.9 | PPM | ICPMS | |
| U | 1.9 | PPM | ICPMS | |
| CE | 69.5 | PPM | MS-ID | |
| ND | 22.6 | PPM | MS-ID | |
| SM | 3.29 | PPM | MS-ID | |
| EU | 0.98 | PPM | MS-ID | |
| GD | 2.1 | PPM | MS-ID | |
| DY | 1.75 | PPM | MS-ID | |
| ER | 1.01 | PPM | MS-ID | |
| YB | 1.1 | PPM | MS-ID | |
| SR87_SR86 | 0.704075 | MS | ||
| SR87_SR86_INITIAL | 0.703832 | MS | ||
| ND143_ND144 | 0.512826 | MS | ||
| PB206_PB204 | 18.61 | MS | ||
| PB207_PB204 | 15.61 | MS | ||
| PB208_PB204 | 38.28 | 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