Sample 9-27-91-8a
NavDat sample number 92270 · TRACHYTE
Sample
| Sample ID | 9-27-91-8a |
|---|---|
| Rock name | TRACHYTE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | Isotopic data attributed to dated samples (Table 3-1 (p.43)) as indicated by author in thesis text (even though sample numbers for samples with isotopic data are different from samples numbers of dated samples). |
Location
| Latitude | 44.3376 |
|---|---|
| Longitude | -103.688 |
| Location | Anchor Hill |
| State / province | South Dakota |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 55.03 | 55.88 | 55.18 |
Analyses
WHOLE ROCK
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 58.7 | WT% | XRF | |
| TIO2 | 0.72 | WT% | XRF | |
| AL2O3 | 17.5 | WT% | XRF | |
| FE2O3 | 5.6 | WT% | XRF | |
| FEOT | 6.22 | WT% | XRF | |
| FEO | 3.34 | WT% | XRF | |
| MNO | 0.22 | WT% | XRF | |
| MGO | 0.82 | WT% | XRF | |
| CAO | 4.48 | WT% | XRF | |
| NA2O | 5.18 | WT% | XRF | |
| K2O | 5.07 | WT% | XRF | |
| P2O5 | 0.18 | WT% | XRF | |
| LOI | 0.46 | WT% | XRF | |
| NB | 20 | PPM | XRF | |
| RB | 114 | PPM | XRF | |
| SR | 1800 | PPM | XRF | |
| ZR | 400 | PPM | XRF | |
| Y | 24 | PPM | XRF | |
| BA | 1700 | PPM | XRF | |
| CE | 250 | PPM | XRF | |
| LA | 128 | PPM | XRF | |
| ZN | 98 | PPM | XRF | |
| H2O_PLUS | 0.64 | WT% | UNKNOWN | |
| H2O_MINUS | 0.08 | WT% | UNKNOWN | |
| TH | 25.2 | PPM | ICPMS | |
| U | 7.51 | PPM | ICPMS | |
| RB | 66.4 | PPM | TIMS | |
| SR | 2438.4 | PPM | TIMS | |
| SR87_SR86 | 0.705839 | TIMS | ||
| SM | 17.12 | PPM | TIMS | |
| ND | 102.4 | PPM | TIMS | |
| ND143_ND144 | 0.512432 | TIMS |