Sample TRB-2
NavDat sample number 36926 · GRANITE
Sample
| Sample ID | TRB-2 |
|---|---|
| Rock name | GRANITE |
| Rock type | PLUTONIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 45.7 |
|---|---|
| Longitude | -112.1 |
| Location | Tobacco Root Mountains, western part of batholith |
| State / province | Montana |
| Volcanic field | Tobacco Root batholith |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 80 | 70 | 85 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 67.41 | WT% | XRF | |
| TIO2 | 0.3 | WT% | XRF | |
| AL2O3 | 16.26 | WT% | XRF | |
| FE2O3T | 3.06 | WT% | XRF | |
| MNO | 0.07 | WT% | XRF | |
| MGO | 1.19 | WT% | XRF | |
| CAO | 3.21 | WT% | XRF | |
| NA2O | 4.22 | WT% | XRF | |
| K2O | 2.69 | WT% | XRF | |
| P2O5 | 0.14 | WT% | XRF | |
| TOTAL | 98.55 | WT% | XRF | |
| LA | 23 | PPM | XRF | |
| Y | 17 | PPM | XRF | |
| ZR | 114 | PPM | XRF | |
| NB | 24 | PPM | XRF | |
| BA | 1700 | PPM | XRF | |
| RB | 50 | PPM | MS-ID | |
| SR | 994 | PPM | MS-ID | |
| SM | 3.1 | PPM | MS-ID | |
| ND | 18.3 | PPM | MS-ID | |
| SR87_SR86 | 0.7057 | MS-ID | ||
| ND143_ND144 | 0.51166 | MS-ID |
References
- Mueller, P A; Heatherington, A L; D, Arcy K A; Wooden, J L; Nutman, A P (1996) Contrasts between Sm-Nd whole-rock and U-Pb zircon systematics in the Tobacco Root Batholith, Montana; implications for the determination of crustal age provinces. Tectonophysics. 265; 1-2, Pages 169-179. 1996. doi:10.1016/S0040-1951(96)00151-5