Sample 97-LT-92B
NavDat sample number 130833 · ANDESITE
Sample
| Sample ID | 97-LT-92B |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | Cousens and others |
| Comment | hornblende andesite |
Location
| Latitude | 39.1846 |
|---|---|
| Longitude | -120.27 |
| 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 | 55.65 | WT% | XRF | |
| TIO2 | 0.688 | WT% | XRF | |
| AL2O3 | 18.12 | WT% | XRF | |
| FE2O3 | 6.989 | WT% | XRF | |
| MNO | 0.1259 | WT% | XRF | |
| MGO | 3.989 | WT% | XRF | |
| CAO | 7.487 | WT% | XRF | |
| NA2O | 3.8 | WT% | XRF | |
| K2O | 1.33 | WT% | XRF | |
| P2O5 | 0.339 | WT% | XRF | |
| LOI | 1.5 | WT% | XRF | |
| V | 150 | PPM | XRF | |
| CR | 46 | PPM | XRF | |
| NI | 20 | PPM | XRF | |
| RB | 26 | PPM | XRF | |
| SR | 859 | PPM | XRF | |
| Y | 17 | PPM | XRF | |
| ZR | 138 | PPM | XRF | |
| BA | 1004 | PPM | XRF | |
| LA | 24.19 | PPM | ICPMS | |
| ND | 24.05 | PPM | ICPMS | |
| YB | 1.47 | PPM | ICPMS | |
| NB | 8 | PPM | ICPMS | |
| CS | 0.6 | PPM | ICPMS | |
| HF | 3.43 | PPM | ICPMS | |
| TH | 3.8 | PPM | ICPMS | |
| CE | 49.01 | PPM | UNKNOWN | |
| PR | 6.25 | PPM | UNKNOWN | |
| TA | 0.36 | PPM | UNKNOWN | |
| SM | 4.31 | PPM | UNKNOWN | |
| EU | 1.15 | PPM | UNKNOWN | |
| GD | 3.27 | PPM | UNKNOWN | |
| TB | 0.45 | PPM | UNKNOWN | |
| DY | 2.85 | PPM | UNKNOWN | |
| HO | 0.52 | PPM | UNKNOWN | |
| ER | 1.6 | PPM | UNKNOWN | |
| TM | 0.21 | PPM | UNKNOWN | |
| LU | 0.23 | PPM | UNKNOWN | |
| NB | 6.32 | PPM | UNKNOWN | |
| U | 1.29 | PPM | UNKNOWN | |
| CO | 17 | PPM | UNKNOWN | |
| ZN | 93 | PPM | UNKNOWN | |
| SR87_SR86 | 0.705627 | UNKNOWN | ||
| ND143_ND144 | 0.51255 | UNKNOWN | ||
| PB208_PB204 | 38.743 | UNKNOWN | ||
| PB207_PB204 | 15.638 | UNKNOWN | ||
| PB206_PB204 | 19.032 | 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