Sample 97-LT-6A
NavDat sample number 130812 · ANDESITE
Sample
| Sample ID | 97-LT-6A |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | Cousens and others |
| Comment | biotite hornblende andesite |
Location
| Latitude | 39.2245 |
|---|---|
| Longitude | -120.167 |
| Location | Mt. Watson |
| 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 | 60.65 | WT% | XRF | |
| TIO2 | 0.779 | WT% | XRF | |
| AL2O3 | 15.69 | WT% | XRF | |
| FE2O3 | 5.03 | WT% | XRF | |
| MNO | 0.085 | WT% | XRF | |
| MGO | 4.37 | WT% | XRF | |
| CAO | 5.17 | WT% | XRF | |
| NA2O | 3.44 | WT% | XRF | |
| K2O | 2.898 | WT% | XRF | |
| P2O5 | 0.318 | WT% | XRF | |
| LOI | 1.2 | WT% | XRF | |
| V | 110 | PPM | XRF | |
| CR | 203 | PPM | XRF | |
| NI | 76 | PPM | XRF | |
| RB | 83 | PPM | XRF | |
| SR | 870 | PPM | XRF | |
| Y | 16 | PPM | XRF | |
| ZR | 193 | PPM | XRF | |
| BA | 1356 | PPM | XRF | |
| LA | 41.72 | PPM | ICPMS | |
| ND | 30.23 | PPM | ICPMS | |
| YB | 0.97 | PPM | ICPMS | |
| NB | 13 | PPM | ICPMS | |
| CS | 3.82 | PPM | ICPMS | |
| HF | 4.12 | PPM | ICPMS | |
| TH | 10.12 | PPM | ICPMS | |
| CE | 75.81 | PPM | UNKNOWN | |
| PR | 8.67 | PPM | UNKNOWN | |
| TA | 0.73 | PPM | UNKNOWN | |
| SM | 4.71 | PPM | UNKNOWN | |
| EU | 1.17 | PPM | UNKNOWN | |
| GD | 3.22 | PPM | UNKNOWN | |
| TB | 0.4 | PPM | UNKNOWN | |
| DY | 2.46 | PPM | UNKNOWN | |
| HO | 0.4 | PPM | UNKNOWN | |
| ER | 1.21 | PPM | UNKNOWN | |
| TM | 0.14 | PPM | UNKNOWN | |
| LU | 0.14 | PPM | UNKNOWN | |
| NB | 10.36 | PPM | UNKNOWN | |
| U | 3.1 | PPM | UNKNOWN | |
| CO | 14 | PPM | UNKNOWN | |
| ZN | 71 | PPM | 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