Sample RDS44
NavDat sample number 36743 · ANDESITE
Sample
| Sample ID | RDS44 |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | Low Y andesite |
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 |
|---|---|---|---|---|---|
| 34.6 | 34.7 | 35.5 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 58.7 | WT% | XRF | |
| TIO2 | 1.16 | WT% | XRF | |
| AL2O3 | 16.5 | WT% | XRF | |
| FEO | 7.23 | WT% | XRF | |
| MGO | 3.92 | WT% | XRF | |
| CAO | 6.03 | WT% | XRF | |
| NA2O | 3.76 | WT% | AAS | |
| K2O | 2.32 | WT% | XRF | |
| P2O5 | 0.39 | WT% | XRF | |
| LOI | 1.14 | WT% | XRF | |
| TOTAL | 99.23 | WT% | XRF | |
| RB | 64 | PPM | XRF | |
| SR | 701 | PPM | XRF | |
| BA | 1138 | PPM | XRF | |
| LA | 39 | PPM | XRF | |
| NB | 12 | PPM | XRF | |
| ZR | 227 | PPM | XRF | |
| Y | 18 | PPM | XRF | |
| NI | 38 | PPM | XRF | |
| SC | 17 | PPM | XRF | |
| PB | 11.1 | PPM | ICPMS | |
| TH | 5.8 | PPM | ICPMS | |
| U | 1.8 | PPM | ICPMS | |
| CE | 73.1 | PPM | MS-ID | |
| ND | 32.8 | PPM | MS-ID | |
| SM | 5.97 | PPM | MS-ID | |
| EU | 1.67 | PPM | MS-ID | |
| GD | 4.84 | PPM | MS-ID | |
| DY | 3.63 | PPM | MS-ID | |
| ER | 1.84 | PPM | MS-ID | |
| YB | 1.59 | PPM | MS-ID | |
| SR87_SR86 | 0.704444 | MS | ||
| SR87_SR86_INITIAL | 0.704361 | MS | ||
| ND143_ND144 | 0.512599 | MS | ||
| PB206_PB204 | 18.36 | MS | ||
| PB207_PB204 | 15.59 | MS | ||
| PB208_PB204 | 38.03 | 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