Sample 97-LT-91B
NavDat sample number 130831 · ANDESITE
Sample
| Sample ID | 97-LT-91B |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | Cousens and others |
| Comment | pyroxene andesite |
Location
| Latitude | 39.1751 |
|---|---|
| Longitude | -120.267 |
| Location | Squaw Peak |
| State / province | California |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 14 | 1 | 28 |
Analyses
Whole Rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 57.79 | WT% | XRF | |
| TIO2 | 0.504 | WT% | XRF | |
| AL2O3 | 18.06 | WT% | XRF | |
| FE2O3 | 5.164 | WT% | XRF | |
| MNO | 0.0904 | WT% | XRF | |
| MGO | 1.837 | WT% | XRF | |
| CAO | 6.403 | WT% | XRF | |
| NA2O | 3.62 | WT% | XRF | |
| K2O | 2.5 | WT% | XRF | |
| P2O5 | 0.327 | WT% | XRF | |
| LOI | 3.6 | WT% | XRF | |
| V | 89 | PPM | XRF | |
| CR | 13 | PPM | XRF | |
| NI | 7 | PPM | XRF | |
| RB | 38 | PPM | XRF | |
| SR | 846 | PPM | XRF | |
| Y | 16 | PPM | XRF | |
| ZR | 159 | PPM | XRF | |
| BA | 1304 | PPM | XRF | |
| LA | 31.64 | PPM | ICPMS | |
| ND | 25.56 | PPM | ICPMS | |
| YB | 1.23 | PPM | ICPMS | |
| NB | 10 | PPM | ICPMS | |
| CS | 0.62 | PPM | ICPMS | |
| HF | 3.86 | PPM | ICPMS | |
| TH | 5.11 | PPM | ICPMS | |
| CE | 58.98 | PPM | UNKNOWN | |
| PR | 7.06 | PPM | UNKNOWN | |
| TA | 0.49 | PPM | UNKNOWN | |
| SM | 4.19 | PPM | UNKNOWN | |
| EU | 0.98 | PPM | UNKNOWN | |
| GD | 2.95 | PPM | UNKNOWN | |
| TB | 0.38 | PPM | UNKNOWN | |
| DY | 2.39 | PPM | UNKNOWN | |
| HO | 0.43 | PPM | UNKNOWN | |
| ER | 1.31 | PPM | UNKNOWN | |
| TM | 0.18 | PPM | UNKNOWN | |
| LU | 0.19 | PPM | UNKNOWN | |
| NB | 7.85 | PPM | UNKNOWN | |
| U | 1.61 | PPM | UNKNOWN | |
| CO | 10 | PPM | UNKNOWN | |
| ZN | 95 | PPM | UNKNOWN | |
| SR87_SR86 | 0.70566 | UNKNOWN | ||
| ND143_ND144 | 0.512533 | UNKNOWN | ||
| PB208_PB204 | 38.648 | UNKNOWN | ||
| PB207_PB204 | 15.63 | UNKNOWN | ||
| PB206_PB204 | 18.971 | UNKNOWN |
References
- Cousens, Brian; Prytulak, Julie; Henry, Christopher; Alcazar, Al; Brownrigg, Tim (2008) Geology, geochronology, and geochemistry of the Miocene-Pliocene ancestral Cascades Arc, northern Sierra Nevada, California and Nevada;the roles of the upper mantle, subducting slab, and the Sierra Nevadalithosphere. Geosphere, vol. 4, no. 5, pp.829-853, Oct 2008 doi:10.1130/GES00166.1