Sample 97-LT-91A
NavDat sample number 130830 · ANDESITE
Sample
| Sample ID | 97-LT-91A |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | Cousens and others |
| Comment | hornblende 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 | 56.34 | WT% | XRF | |
| TIO2 | 0.651 | WT% | XRF | |
| AL2O3 | 17.44 | WT% | XRF | |
| FE2O3 | 6.636 | WT% | XRF | |
| MNO | 0.1323 | WT% | XRF | |
| MGO | 3.663 | WT% | XRF | |
| CAO | 7.023 | WT% | XRF | |
| NA2O | 3.43 | WT% | XRF | |
| K2O | 1.144 | WT% | XRF | |
| P2O5 | 0.221 | WT% | XRF | |
| LOI | 3.8 | WT% | XRF | |
| V | 147 | PPM | XRF | |
| CR | 41 | PPM | XRF | |
| NI | 24 | PPM | XRF | |
| RB | 18 | PPM | XRF | |
| SR | 724 | PPM | XRF | |
| Y | 15 | PPM | XRF | |
| ZR | 109 | PPM | XRF | |
| BA | 786 | PPM | XRF | |
| LA | 17.33 | PPM | ICPMS | |
| ND | 17.44 | PPM | ICPMS | |
| YB | 1.21 | PPM | ICPMS | |
| NB | 6 | PPM | ICPMS | |
| CS | 0.34 | PPM | ICPMS | |
| HF | 2.84 | PPM | ICPMS | |
| TH | 1.99 | PPM | ICPMS | |
| CE | 33.82 | PPM | UNKNOWN | |
| PR | 4.33 | PPM | UNKNOWN | |
| TA | 0.3 | PPM | UNKNOWN | |
| SM | 3.37 | PPM | UNKNOWN | |
| EU | 0.88 | PPM | UNKNOWN | |
| GD | 2.86 | PPM | UNKNOWN | |
| TB | 0.39 | PPM | UNKNOWN | |
| DY | 2.42 | PPM | UNKNOWN | |
| HO | 0.47 | PPM | UNKNOWN | |
| ER | 1.37 | PPM | UNKNOWN | |
| TM | 0.19 | PPM | UNKNOWN | |
| LU | 0.2 | PPM | UNKNOWN | |
| NB | 5.01 | PPM | UNKNOWN | |
| U | 0.7 | PPM | UNKNOWN | |
| CO | 19 | PPM | UNKNOWN | |
| ZN | 88 | PPM | UNKNOWN | |
| SR87_SR86 | 0.705346 | UNKNOWN | ||
| ND143_ND144 | 0.512578 | UNKNOWN | ||
| PB208_PB204 | 38.713 | UNKNOWN | ||
| PB207_PB204 | 15.635 | UNKNOWN | ||
| PB206_PB204 | 19.001 | 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