Sample RDS37
NavDat sample number 36740 · IGNIMBRITE
Sample
| Sample ID | RDS37 |
|---|---|
| Rock name | IGNIMBRITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | High Y upper 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 |
|---|---|---|---|---|---|
| 31.3 | 30.6 | 32 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 75.3 | WT% | XRF | |
| TIO2 | 0.23 | WT% | XRF | |
| AL2O3 | 12.6 | WT% | XRF | |
| FEO | 1.99 | WT% | XRF | |
| MGO | 0.19 | WT% | XRF | |
| CAO | 0.7 | WT% | XRF | |
| NA2O | 3.56 | WT% | AAS | |
| K2O | 5.4 | WT% | XRF | |
| P2O5 | 0.04 | WT% | XRF | |
| LOI | 0.66 | WT% | XRF | |
| TOTAL | 98.66 | WT% | XRF | |
| RB | 283 | PPM | XRF | |
| SR | 25 | PPM | XRF | |
| BA | 86 | PPM | XRF | |
| LA | 86 | PPM | XRF | |
| NB | 43 | PPM | XRF | |
| ZR | 301 | PPM | XRF | |
| Y | 57 | PPM | XRF | |
| NI | 5 | PPM | XRF | |
| SC | 3 | PPM | XRF | |
| PB | 22 | PPM | ICPMS | |
| TH | 37.4 | PPM | ICPMS | |
| U | 8.8 | PPM | ICPMS | |
| CE | 162 | PPM | MS-ID | |
| ND | 52.1 | PPM | MS-ID | |
| SM | 9.18 | PPM | MS-ID | |
| SR87_SR86 | 0.72455 | MS | ||
| SR87_SR86_INITIAL | 0.710206 | MS | ||
| ND143_ND144 | 0.512542 | MS | ||
| PB206_PB204 | 18.68 | MS | ||
| PB207_PB204 | 15.64 | MS | ||
| PB208_PB204 | 38.37 | 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